NBG410W3G - Routeur sans fil ZYXEL - Free user manual and instructions

USER MANUAL NBG410W3G ZYXEL

About This User's Guide

About This User's Guide

Intended Audience This manual is intended for people who want to configure the ZyXEL Device using the web

configurator. You should have at least a basic knowledge of TCP/IP networking concepts and topology.

Related Documentation

The Quick Start Guide is designed to help you get up and running right away. It contains information on setting up your network and configuring for Internet access. + Web Configurator Online Help

Embedded web help for descriptions of individual screens and supplementary information.

+ Supporting Disk Refer to the included CD for support documents. + ZyXEL Web Site

Please refer to www.zyxel.com for additional support documentation and product certifications.

Help us help you. Send all User Guide-related comments, questions or suggestions for improvement to the following address, or use e-mail instead. Thank you!

The Technical Writing Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based Industrial Park, Hsinchu, 300, Taiwan.

E-mail: techwriters@zyxel.com.tw

NBG410W36G Series User's Guide 3

Document Conventions

These are how warnings and notes are shown in this User’s Guide.

© Warnings tell you about things that could harm you or your device.

Æ Notes tell you other important information (for example, other things you may need to configure or helpful tips) or recommendations.

The NBG410W3G and NBG412W3G may be referred to as the “ZyXEL Device”, the “device”, the “system”, or the “NBG410W3G Series” in this User’s Guide.

Product labels, screen names, field labels and field choices are all in bold font.

A key stroke is denoted by square brackets and uppercase text, for example, [ENTER] means the “enter” or “return” key on your keyboard.

“Enter” means for you to type one or more characters and then press the [ENTER] key. “Select” or “choose” means for you to use one of the predefined choices.

A right angle bracket (> ) within a screen name denotes a mouse click. For example, Maintenance > Log > Log Setting means you first click Maintenance in the navigation panel, then the Log sub menu and finally the Log Setting tab to get to that screen.

Units of measurement may denote the “metric” value or the “scientific” value. For example, “k” for kilo may denote “1000” or “1024”, “M” for mega may denote “1000000 or “1048576” and so on.

“e.g..” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.

NBG410W36G Series Users Guide

Document Conventions

Icons Used in Figures

Figures in this User’s Guide may use the following generic icons. The ZyXEL Device icon is not an exact representation of your device.

ZyXEL Device Computer Notebook computer

Server DSLAM Firewall NN =" = = EE _ Vi Q Qu = ne [I] | a ns

Telephone Switch Router

RSS = =J NBG410W36G Series User's Guide 5

© For your safety, be sure to read and follow all warning notices and instructions.

+ Do NOT use this product near water, for example, in a wet basement or near a swimming pool.

+ Do NOT expose your device to dampness, dust or corrosive liquids.

+ Do NOT store things on the device.

+ Do NOT install, use, or service this device during a thunderstorm. There is a remote risk of electric shock from lightning.

+ Connect ONLY suitable accessories to the device.

+ Do NOT open the device or unit. Opening or removing covers can expose you to dangerous high voltage points or other risks. ONLY qualified service personnel should service or disassemble this device. Please contact your vendor for further information.

+ Make sure to connect the cables to the correct ports.

+ Place connecting cables carefully so that no one will step on them or stumble over them.

+ Always disconnect all cables from this device before servicing or disassembling.

+ Use ONLY an appropriate power adaptor or cord for your device.

+ Connect the power adaptor or cord to the right supply voltage (for example, 110V AC in North America or 230V AC in Europe).

+ Do NOT remove the plug and connect it to a power outlet by itself, always attach the plug to the power adaptor first before connecting it to a power outlet.

+ Do NOT allow anything to rest on the power adaptor or cord and do NOT place the product where anyone can walk on the power adaptor or cord.

+ Do NOT use the device if the power adaptor or cord is damaged as it might cause electrocution.

+ _Ifthe power adaptor or cord is damaged, remove it from the power outlet.

+ Do NOT attempt to repair the power adaptor or cord. Contact your local vendor to order a new one.

+ Do not use the device outside, and make sure all the connections are indoors. There is a remote risk of electric shock from lightning.

+ Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your device.

+ Antenna Warning! This device meets ETSI and FCC certification requirements when using the included antenna(s). Only use the included antenna(s).

+ _If you wall mount your device, make sure that no electrical lines, gas or water pipes will be damaged.

This product is recyclable. Dispose of it properly.

6 NBG410W36G Series Users Guide

NBG410W36G Series User's Guide 7

Network Address Translation (NAT) Static Route

DNS Remote Management . UPnP Custom Application ALG Screen

Logs and Maintenance

Troubleshooting and Specifications …

Troubleshooting ……. Product Specifications

Appendices and Index

NBG410W3G Series User's Guide 9

About This User's Guide

Table of Contents...

4.1 DMZ Overview 4.2 DMZ Setup Example 4.2.1 Basic Setup 4.2.2 Advanced Setup 4.3 Firewall Rule Setup ……. 4.4 Setting Up a VolP Phone with H.323 4.5 Using NAT with Multiple Public IP Addresses . 4.5.1 Example Parameters and Scenario … 4.5.2 Configuring the WAN Connection with a Static IP Address 4.5.3 Public IP Address Mapping 4.5.4 Forwarding Traffic from the WAN to a Local Computer 4.5.5 Allow WAN-to-LAN Traffic through the Firewall 4.5.6 Testing the Connections . 4.6 Using NAT with Multiple Game Players

Chapter 5 LAN Screens

5.1 LAN, WAN and the ZyXEL Device 5.2 IP Address and Subnet Mask

7.4 DMZ IP Alias 7.5 DMZ Public IP Address Example 7.6 DMZ Private and Public IP Address Example 7.7 DMZ Port Roles

12.3 NAT Overview Screen 12.4 NAT Address Mapping 12.4.1 What NAT Does 12.4.2 NAT Address Mapping Edit 12.5 Port Forwarding 12.5.1 Default Server IP Address 12.5.2 Port Forwarding: Services and Port Numbers 12.5.3 Configuring Servers Behind Port Forwarding (Example) 12.5.4 NAT and Multiple WAN 12.5.5 Port Translation 12.6 Port Forwarding Screen 12.7 Port Triggering

Chapter 13 Static Route

13.1 IP Static Route 13.2 IP Static Route 13.2.1 IP Static Route Edit

15.14.1 Supported MIBs .275

15.17.1 Additional Configuration for Vantage CNM Chapter 16 UPnP

Chapter 17 Custom Application

Chapter 19 Logs Screens

Part VII: Troubleshooting and Specifications 337

Chapter 21 Troubleshooting

21.1 Power, Hardware Connections, and LEDs 21.2 ZyXEL Device Access and Login . 21.3 Internet Access 21.4 3G Connection

Chapter 22 Product Specifications

22.1 General ZyXEL Device Specifications 22.2 Wall-mounting Instructions me 22.3 Power Adaptor Specifications

Part VIII: Appendices and Index …..… 351

Appendix A Pop-up Windows, JavaScripts and Java Permissions 353

Appendix B Setting up Your Computer's IP Address

Appendix C IP Addresses and Subnetting

Appendix D Common Services

Appendix E Wireless LANS NBG410W3G Series Users Guide 19

Mapping Multiple Public IP Addresses to Inside Servers NAT > NAT Overview NAT > Address Mapping …. NAT Address Mapping Edit: One-to-One (1) NAT Address Mapping Edit: One-to-One (2) NAT Address Mapping Edit: Many-to-One NAT Address Mapping Done Forwarding Incoming FTP Traffic to a Local Computer NAT Address Mapping Edit: Server NAT Port Forwarding Forwarding Incoming FTP Traffic to a Local Computer Firewall Default Rule WAN1 to LAN WAN to LAN Address Edit for Web Server . WAN to LAN Service Edit for Web Server WAN to LAN Address Edit for Mail Server WAN to LAN Service Edit for Mail Server WAN to LAN Address Edit for FTP Server Firewall Rule: WAN to LAN Service Edit for FTP Server Firewall Rule Summary … NAT Address Mapping Done: Game Playing

Getting to Know Your ZyXEL Device

This chapter introduces the main features and applications of the ZyXEL Device.

The ZyXEL Device is a high-security 3G router with wireless capability.

Access the Internet with the 3G connection from any location with 3G coverage, with the option of using a wired WAN connection at the same time.

Enhance network security by adding a De-Militarized Zone (DMZ) to your network. This separates devices that are publicly accessible (and less secure) from your LAN.

Set up a local network with the four LAN ports and set up a wireless network with IEEE 802.11b or IEEE 802.11g compatible wireless devices. The ZyXEL Device provides the option to easily move devices from your LAN or wireless network to the DMZ.

The ZyXEL Device also provides NAT, port forwarding, DHCP server and many other powerful features.

The NBG410W3G and NBG412W3G offer similar features. However, the NBG410W3G also supports an internal 3G interface.

See Chapter 22 on page 345 for a complete list of features for both devices.

1.2 Applications for the ZyXEL Device

Here are some examples of what you can do with your ZyXEL Device.

1.2.1 3G WAN Application

With an activated, correctly inserted 3G SIM card and/or 3G USB dongle you can use the ZyXEL Device to wirelessly access the Internet via a 3G base station. See Section 6.9 on page 126 for more information about 3G.

With both the primary WAN (physical WAN port) and 3G connections enabled, you can set one of the WAN connections as a backup.

NBG410W3G Series Users Guide 35

Chapter 1 Getting to Know Your ZyXEL Device

1.2.2 Secure Broadband Internet Access via Cable or DSL Modem

For Internet access, connect the WAN Ethernet port to your existing Internet access gateway (company network, or your cable or DSL modem for example). Connect computers or servers to the LAN or DMZ ports for shared Internet access.

The ZyXEL Device guarantees not only high speed Internet access, but secure internal network protection and traffic management as well.

Figure 2 Secure Internet Access via Cable or DSL Modem

1.3 Ways to Manage the ZyXEL Device

Use any of the following methods to manage the ZyXEL Device. + Web Configurator. This is recommended for everyday management of the ZyXEL Device using a (supported) web browser. + Command Line Interface. Line commands are mostly used for troubleshooting by service engineers. + FTP for firmware upgrades and configuration backup/restore.

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Chapter 1 Getting to Know Your ZyXEL Device

1.4 Configuring Your ZyXEL Device’s Security Features

Your ZyXEL Device comes with a variety of security features. This section summarizes these features and provides links to sections in the User’s Guide to configure security settings on your ZyXEL Device. Follow the suggestions below to improve security on your ZyXEL Device and network.

1.4.1 Control Access to Your Device

Ensure only people with permission can access your ZyXEL Device.

+ Control physical access by locating devices in secure areas, such as locked rooms. Most ZyXEL Devices have a reset button. If an unauthorized person has access to the reset button, they can then reset the device’s password to its default password, log in and reconfigure its settings.

+ Change any default passwords on the ZyXEL Device, such as the password used for accessing the ZyXEL Device’s web configurator (if it has a web configurator). Use a password with a combination of letters and numbers and change your password regularly. Write down the password and put it in a safe place.

+ Avoid setting a long timeout period before the ZyXEL Device’s web configurator automatically times out. A short timeout reduces the risk of unauthorized person accessing the web configurator while it is left idle.

See Chapter 20 on page 325 for instructions on changing your password and setting the timeout period.

+ _Configure remote management to control who can manage your ZyXEL Device. See Section 15.1 on page 259 for more information. If you enable remote management, ensure you have enabled remote management only on the IP addresses, services or interfaces you intended and that other remote management settings are disabled.

1.4.2 Wireless Security

Wireless devices are especially vulnerable to attack. If your ZyXEL Device has a wireless function, take the following measures to improve wireless security.

+ Enable wireless security on your ZyXEL Device. Choose the most secure encryption method that all devices on your network support. If you have a RADIUS server, enable IEEE 802.1x or WPA(2) user identification on your network so users must log in. This method is more common in business environment.

+ Hide your wireless network name (SSID). The SSID can be regularly broadcast and unauthorized users may use this information to access your network.

+ Enable the MAC filter to allow only trusted users to access your wireless network or deny unwanted users access based on their MAC address.

See Section 8.2 on page 148 for directions on these wireless security measures.

See Section 9.1 on page 167 for more information on the following security measures

+ _Ensure the firewall is turned on. Traffic initiated from your WAN is blocked by default.

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Chapter 1 Getting to Know Your ZyXEL Device

+ Set the firewall to block ICMP requests.

+ Enable do not respond to requests for unauthorized services.

+ _If you have a backup gateway (for example, backup Internet access) on your network, disable the Bypass Triangle Routes feature and enable IP Alias to put your backup gateway on a different subnet.

Avoid raising the maximum number of NAT sessions per host unnecessarily as it increases the possibility of unauthorized connections, such as connections caused by a computer VITUS.

+ Enable NAT (Network Address Translation) to make devices on your network “invisible” to those outside your network (unless you configure port-forwarding rules for them).

+ Applications such as games or file-sharing can be configured so they are visible from other networks by using port-forwarding. Ensure only applications you want are configured to port-forward.

See Section 12.1 on page 225 for instructions on these measures.

+ Disable UPnP (Universal Plug and Play) unless you specifically want applications (for example, games or file-sharing applications) on your network to pass through your firewall unchecked.

See Section 16.1 on page 281 for instructions on this measure.

1.5 Maintaining Your ZyXEL Device

Do the following things regularly to keep your ZyXEL Device running.

+ Check the ZyXEL website (www.zyxel.com.tw) regularly for new firmware for your ZyXEL Device.

paf Ensure you download the correct firmware for your model.

+ Back up the configuration (and make sure you know how to restore it). Restoring an earlier working configuration may be useful if the device becomes unstable or even crashes. If you forget your password, you will have to reset the ZyXEL Device to its factory default settings. If you backed up an earlier configuration file, you would not have to totally re-configure the ZyXEL Device. You could simply restore your last configuration.

38 NBG410W3G Series Users Guide

Chapter 1 Getting to Know Your ZyXEL Device

ZyXEL U T ΠZ] LA a 6] val

The following tables describe the lights. Table 1 describes the light features in NBG410W3G, and Table 2 describes the light features in NBG412W3G.

Table 1 NBG410W3G Front Panel Lights

LED ICONS |COLOR |STATUS | DESCRIPTION POWER Off The ZyXEL Device is turned off.

Green On The ZyXEL Device is ready and running.

Flashing | The ZyXEL Device is restarting.

Red On The power to the ZyXEL Device is too low. LAN/DMZ 10/ Off The LAN/DMZ is not connected. 100 Green On The ZyXEL Device has a successful 10Mbps Ethernet

Flashing | The 10M LAN is sending or receiving packets.

Orange |On The ZyXEL Device has a successful 100Mbps Ethernet connection.

Flashing | The 100M LAN is sending or receiving packets.

WAN Off The WAN connection is not ready, or has failed. Green On The ZyXEL Device has a successful 10Mbps WAN connection. Flashing | The 10M WAN is sending or receiving packets. Orange |On The ZyXEL Device has a successful 100Mbps WAN connection.

Flashing | The 100M WAN is sending or receiving packets.

Wi-Fi NN Green Off The wireless connection through the built-in Wi-Fi card is not CS ready, or has failed. [| On The wireless LAN through the built-in wireless LAN card is ready.

Flashing | The wireless LAN through the built-in wireless LAN card is sending or receiving packets.

NBG410W3G Series Users Guide 39

Chapter 1 Getting to Know Your ZyXEL Device

Table 1 NBG410W36G Front Panel Lights (continued)

LED ICONS |COLOR |STATUS | DESCRIPTION 3G Green On The ZyXEL Device has a successful 3G connection. OPERATION | 76] Flashing | The ZyXEL Device has detected an available 3G network, but has not yet connected to it. Blue On The ZyXEL Device has a successful 3.5G connection Flashing | The ZyXEL Device has detected an available 3.5G network, but has not yet connected to it. Orange |On The ZyXEL Device has a successful 2G or 2.5G connection Flashing | The ZyXEL Device has detected an available 2G or 2.5G network, but has not yet connected to it. Off One (or more) of the following has occurred. *__ The 3G function is not activated. + The ZyXEL Device is not registered with a 3G network. + The ZyXEL Device is using a 3G USB dongle for 3G connection. 3G SIGNAL Green On The 3G signal is strong. STRENGTH fl Yellow The 3G signal is moderate. Red The 3G signal is weak. Off Ifthe 3G OPERATION LED is off, there is no 3G connection,

or the ZyXEL Device is using a 3G USB dongjle for a 3G connection.

Ifthe 3G OPERATION LED is not off, no 3G signal is detected.

Table 2 NBG412W3G Fr

LED ICONS |COLOR |STATUS | DESCRIPTION POWER Off The ZyXEL Device is turned off. Green On The ZyXEL Device is ready and running. Flashing | The ZyXEL Device is restarting. Red On The power to the ZyXEL Device is too low. LAN/DMZ 10/ Off The LAN/DMZ is not connected. 100 Green On The ZyXEL Device has a successful 10Mbps Ethernet connection. Flashing | The 10M LAN is sending or receiving packets. Orange |On The ZyXEL Device has a successful 100Mbps Ethernet connection. Flashing | The 100M LAN is sending or receiving packets. WAN Off The WAN connection is not ready, or has failed. Green On The ZyXEL Device has a successful 10Mbps WAN connection. Flashing | The 10M WAN is sending or receiving packets. Orange |On The ZyXEL Device has a successful 100Mbps WAN connection. Flashing | The 100M WAN is sending or receiving packets.

NBG410W36G Series Users Guide

Chapter 1 Getting to Know Your ZyXEL Device

Table 2 NBG412W3G Front Panel Lights (continued)

LED ICONS |COLOR |STATUS | DESCRIPTION Wi-Fi DNS Green Off The wireless connection through the built-in Wi-Fi card is not CN ready, or has failed. [| On The wireless LAN through the built-in wireless LAN card is ready.

Flashing | The wireless LAN through the built-in wireless LAN card is sending or receiving packets.

3G LINK Green On The ZyXEL Device has a successful 3G connection.

Off There is no 3G connection.

3G MODE Green On The 3G function is activated. D Off The 3G function is not activated.

NBG410W36G Series User's Guide

Chapter 1 Getting to Know Your ZyXEL Device

NBG410W36G Series Users Guide

This chapter describes how to access the ZyXEL Device web configurator and provides an overview of its screens.

2.1 Web Configurator Overview

The web configurator is an HTML-based management interface that allows easy ZyXEL Device setup and management via Internet browser. Use Internet Explorer 6.0 and later or Netscape Navigator 7.0 and later versions. The recommended screen resolution is 1024 by 768 pixels.

In order to use the web configurator you need to allow:

+ _ Web browser pop-up windows from your device. Web pop-up blocking is enabled by default in Windows XP SP (Service Pack) 2.

+ _JavaScripts (enabled by default). +_ Java permissions (enabled by default).

See Appendix A on page 353 if you want to make sure these functions are allowed in Internet Explorer or Netscape Navigator.

2.2 Accessing the ZyXEL Device Web Configurator

1 Make sure your ZyXEL Device hardware is properly connected and prepare your computer/computer network to connect to the ZyXEL Device (refer to the Quick Start Guide).

2 Launch your web browser.

Type "192.168.1.1" as the URL.

4 Type "1234" (default) as the password and click Login. In some versions, the default password appears automatically - if this is the case, click Login.

5 You should see a screen asking you to change your password (highly recommended) as

shown next. Type a new password (and retype it to confirm) and click Apply or click Ignore.

Figure 5 Change Password Screen

Use this screen to change the password.

New Password: CE Retypato nn Confirm:

6 Click Apply in the Replace Certificate screen to create a certificate using your ZyXEL Device’s MAC address that will be specific to this device.

Figure 6 Replace Certificate Screen

The factory default certificate is common to NBG410W3G devices. Click Apply to create a certificate using your NBG410W3G's MAC address that will be specific to this device.

7 You should now see the HOME screen (see Figure 9 on page 47).

NBG410W36G Series Users Guide

Æ The management session automatically times out when the time period set in the Administrator Inactivity Timer field expires (default five minutes). Simply log back into the ZyXEL Device if this happens to you.

2.3 Resetting the ZyXEL Device

If you forget your password or cannot access the web configurator, you will need to reload the factory-default configuration file or use the RESET button on the back of the ZyXEL Device. Uploading this configuration file replaces the current configuration file with the factory- default configuration file. This means that you will lose all configurations that you had previously and the speed of the console port will be reset to the default of 9600bps with 8 data bit, no parity, one stop bit and flow control set to none. The password will be reset to 1234, also.

2.3.1 Procedure To Use The Reset Button

Make sure the POWER LED is on (not blinking) before you begin this procedure.

1 Press the RESET button for ten seconds, and then release it. Ifthe POWER LED begins to blink, the defaults have been restored and the ZyXEL Device restarts. Otherwise, go to step 2.

2 Turn the ZyXEL Device off. While pressing the RESET button, turn the ZyXEL Device on. 4 Continue to hold the RESET button. The POWER LED will begin to blink and flicker

very quickly after about 20 seconds. This indicates that the defaults have been restored and the ZyXEL Device is now restarting.

5 Release the RESET button and wait for the ZyXEL Device to finish restarting.

2.3.2 Uploading a Configuration File Via Console Port

1 Download the default configuration file from the ZyXEL FTP site, unzip it and save it in a folder.

2 Turn offthe ZyXEL Device, begin a terminal emulation software session and turn on the ZyXEL Device again. When you see the message "Press Any key to enter Debug Mode within 3 seconds", press any key to enter debug mode.

3 Enter "y" at the prompt below to go into debug mode. Enter "atlc" after "Enter Debug Mode" message.

5 Wait for "Starting XMODEM upload" message before activating Xmodem upload on your terminal. This is an example Xmodem configuration upload using HyperTerminal.

Folder: C:\Program Files or click Browse to search for it.

6 After successful firmware upload, enter "atgo" to restart the router.

2.4 Navigating the ZyXEL Device Web Configurator

The following summarizes how to navigate the web configurator from the HOME screen.

MAN2 Doun D.0.00/0.00.0 IPCP dient Dial

200MWFull 192.168,1,2/ DHCP semer NA 255,255.255.0 200H/Full 9.0,0.0/ 0.8.0.0 Static a

As illustrated above, the main screen is divided into these parts:

The title bar provides some icons in the upper right corner.

46 NBG410W3G Series Users Guide

Chapter 2 Introducing the Web Configurator

The icons provide the following functions. Table 3 Title Bar: Web Configurator Icons

ICON DESCRIPTION Wizard

Click this icon to open one of the web configurator wizards. See Chapter 3 on page 59 for more information.

Click this icon to open the help page for the current screen.

The main window shows the screen you select in the navigation panel. It is discussed in more detail in the rest of this document.

Right after you log in, the HOME screen is displayed.

This screen displays general status information about the ZyXEL Device. WAN 2 refers to the 3G feature on the supported ZyXEL Device.

utomotic Refresh Intervol CEE Er @ RES Lee me ER re ae ue CEE Last Connection Up Time 0:00:31 Flash | 24408 2G Card Firmware Revision H1_1-8_sMcap _ a Dr Interfaces Status IP/Netmask 1PAssignment Rene: ERORRESCENET ONBenENEE WAN 1 100M/Full 123.29.23.29/ DHCP dient [NRenes ER Et ÉRÉRUEGENS Port Statistics DHCP Table

The following table describes the labels in this screen. Table 4 Web Configurator HOME Screen

LABEL DESCRIPTION Automatic Refresh | Select a number of seconds or None from the drop-down list box to update all Interval screen statistics automatically at the end of every time interval or to not update

the screen statistics.

Refresh Click this button to update the status screen statistics immediately.

NBG410W3G Series Users Guide 47

This is the System Name you enter in te MAINTENANCE > General screen. It is for identification purposes. Click the field label to go to the screen where you can specify a name for this ZyXEL Device.

This is the model name of your ZyXEL Device.

This is the bootbase version and the date created.

This is the ZyNOS firmware version and the date created. ZyNOS is ZyXEL's proprietary Network Operating System design. Click the field label to go to the screen where you can upload a new firmware file.

This field displays how long the ZyXEL Device has been running since it last started up. The ZyXEL Device starts up when you turn it on, when you restart it (MAINTENANCE > Restart), or when you reset it (see Section 2.3 on page 45).

This field displays your ZyXEL Device's present date (in yyyy-mm-dd format) and time (in hh:mmi:ss format) along with the difference from the Greenwich Mean Time (GMT) zone. The difference from GMT is based on the time zone. It is also adjusted for Daylight Saving Time if you set the ZyXEL Device to use it. Click the field label to go to the screen where you can modify the ZyXEL Device's date and time settings.

This displays whether or not the ZyXEL Device's firewall is activated. Click the field label to go to the screen where you can turn the firewall on or off.

The first number shows how many megabytes of the flash the ZyXEL Device is using.

The first number shows how many megabytes of the heap memory the ZyXEL Device is using. Heap memory refers to the memory that is not used by ZyNOS (ZyXEL Network Operating System) and is thus available for running processes like NAT and the firewall.

The second number shows the ZyXEL Device's total heap memory (in megabytes).

The bar displays what percent of the ZyXEL Device's heap memory is in use. The bar turns from green to red when the maximum is being approached.

The first number shows how many sessions are currently open on the ZyXEL Device. This includes all sessions that are currently traversing the ZyXEL Device, terminating at the ZyXEL Device or Initiated from the ZyXEL Device

The second number is the maximum number of sessions that can be open at one time.

The bar displays what percent of the maximum number of sessions is in use. The bar turns from green to red when the maximum is being approached.

CPU This field displays what percentage of the ZyXEL Device's processing ability is currently used. When this percentage is close to 100%, the ZyXEL Device is running at full load, and the throughput is not going to improve anymore. If you want some applications to have more throughput, you should turn off other applications.

This is the port type. Click "+" to expand or "-" to collapse the IP alias drop-down lists. Hold your cursor over an interface's label to display the interface's MAC address.

Click an interface's label to go to the screen where you can configure settings for that interface.

LABEL DESCRIPTION Status

For the LAN and DMZ ports, this displays the port speed and duplex setting. Ethernet port connections can be in half-duplex or full-duplex mode. Full-duplex refers to a device's ability to send and receive simultaneously, while half-duplex indicates that traffic can flow in only one direction at a time. The Ethernet port must use the same speed or duplex mode setting as the peer Ethernet port in order to connect.

For the WAN 1 port, it displays the port speed and duplex setting if you're using Ethernet encapsulation or the remote node name for a PPP connection and Down (line is down or not connected), Idle (line (ppp) idle), Dial (starting to trigger a call) or Drop (dropping a call) if you're using PPPOE encapsulation. For the WAN 2 interface, it displays Connected when the 3G connection is up, Connecting when the 3G card is trying to connect to a network but has not received a response from the base station, Ready to Connect when the 3G connection is idle, Initializing when the ZyXEL Device is configuring the 3G card with AT commands, Disconnecting when the ZyXEL Device is dropping the 3G connection or Down when the 3G connection is down.

This shows the port's IP address and subnet mask.

For the WAN, if the ZyXEL Device gets its IP address automatically from an ISP, this displays DHCP client when you're using Ethernet encapsulation and IPCP Client when you're using PPPOE or PPTP encapsulation. Static displays if the WAN port is using a manually entered static (fixed) IP address.

For the LAN or DMZ, DHCP server displays when the ZyXEL Device is set to automatically give IP address information to the computers connected to the LAN. DHCP relay displays when the ZyXEL Device is set to forward IP address assignment requests to another DHCP server. Static displays if the LAN port is using a manually entered static (fixed) IP address. In this case, you must have another DHCP server on your LAN, or else the computers must be manually configured.

If you are using Ethernet encapsulation and the WAN port is configured to get the IP address automatically from the ISP, click Renew to release the WAN port's dynamically assigned IP address and get the IP address afresh. Click Dial to dial up the PPTP, PPPOE or 3G WAN connection. Click Drop to disconnect the PPTP, PPPOE or 3G WAN connection.

3G WAN Interface Status

The fields below display when a 3G card is inserted and WAN 2 is enabled.

show detail.…./hide detail.

Click show detail... to see more information about the 3G connection and 3G card. Click hide detail... to display less information about the 3G connection and 3G card.

3G Connection Status

This displays Down when the 3G connection is down or not activated.

This displays Initializing when the ZyXEL Device is configuring the 3G card with AT commands.

This displays Ready to Connect when the 3G connection is idle before the ZyXEL Device triggers a call.

This displays Connecting when the 3G card is trying to connect to a network but has not received a response from the base station.

This displays Connected when the 3G connection is up.

This displays Disconnecting when the ZyXEL Device is dropping the 3G connection.

This field also displays the type of the network to which the ZyXEL Device is connected. The network type varies depending on the 3G card you inserted and could be UMTS, HSDPA, GPRS or EDGE when you insert a GSM 3G card, or 1xRTT, EVDO Rev.0 or EVDO Rev.A when you insert a CDMA 3G card.

This displays the name of your network service provider or Limited Service when the signal strength is too low or the ISP is limiting your access.

LABEL DESCRIPTION Roaming Network

This field is available only when you insert a 3G card that supports the roaming feature.

This displays whether the card is able to connect to other ISPs’ base stations.

This field is available only when you insert a 3G card that supports the dormant state.

This displays whether the card is in dormant state. When there is no data transmitting, a card does not send a radio signal and is in dormant state to reduce bandwidth usage.

This displays the signal strength of the wireless network in dBm. The status bar shows the strength of the signal. The signal strength mainly depends on the antenna output power and the distance between your ZyXEL Device and the service provider's base station. You can see a signal strength indication even when the ZyXEL Device does not have a 3G connection (because the signal is still there even when the ZyXEL Device is not using it).

This displays how long the 3G connection has been up.

Tx Bytes This displays the total number of data frames transmitted. Rx Bytes This displays the total number of data frames received. 3G Card This displays the manufacturer of your 3G card. Manufacturer

This displays the model name of your 3G card.

3G Card Firmware Revision

This displays the version of the firmware currently used in the 3G card.

3G Card IMEI This field is available only when you insert a GSM (Global System for Mobile Communications) or UMTS (Universal Mobile Telecommunications System) 3G card.

This displays the International Mobile Equipment Identity (IMEI) which is the serial number of the GSM or UMTS 3G wireless card. The IMEI is a unique 15- digit number used to identify a mobile device.

SIM Card IMSI This field is available only when you insert a GSM or UMTS 3G card.

This displays the International Mobile Subscriber Identity (IMSI) stored in the SIM (Subscriber Identity Module) card. The SIM card is installed in a mobile device and used for authenticating a customer to the carrier network. The IMSI is a unique 15-digit number used to identify a user on a network.

3G Card ESN This field is available only when you insert a CDMA (Code Division Multiple Access) 3G card.

This shows the ESN (Electronic Serial Number) of the inserted CDMA 3G card. The ESN is the serial number of a CDMA 36 card and is similar to the IMEI on a GSM or UMTS 36 card.

Enter PIN code again

Ifthe PIN code you specified in the 3G (WAN 2) screen is not the right one for the card you inserted, this field displays allowing you to enter the correct PIN code. Enter the PIN code (four to eight digits) for the inserted 3G card.

Apply Click Apply to save the correct PIN code and replace the one you specified in the 3G (WAN 2) screen. PUK Code If you enter the PIN code incorrectly three times, the SIM card will be blocked by

your ISP and you cannot use the account to access the Internet. You should get the PUK (Personal Unblocking Key) code (four to eight digits) from your ISP. Enter the PUK code to enable the SIM card. If an incorrect PUK code is entered 10 times, the SIM card will be disabled permanently. You then need to contact your ISP for a new SIM card.

LABEL DESCRIPTION New PIN Code

Configure a PIN code for the SIM card. You can specify any four to eight digits to have a new PIN code or enter the previous PIN code.

Confirm New PIN Enter the PIN code again for confirmation.

counters, resume budget control

Code Apply Click Apply to save your changes in this section. Reset budget This field displays if you have enabled budget control but insert a 3G card with a

different user account from the one for which you configured budget control.

Select this option to have the ZyXEL Device do budget calculation starting from 0 but use the previous settings.

Resume budget control

This field displays if you have enabled budget control but insert a 3G card with a different user account from the one for which you configured budget control. Select this option to have the ZyXEL Device keep the existing statistics and continue counting.

This field displays if you have enabled budget control but insert a 3G card with a

control different user account from the one for which you configured budget control. Select this option to disable budget control. If you want to enable and configure new budget control settings for the new user account, go to the 3G (WAN 2) screen. The ZyXEL Device keeps the existing statistics if you do not change the budget control settings. You could reinsert the original card and enable budget control to have the ZyXEL Device continue counting the budget control statistics. Apply Click Apply to save your changes in this section. Enter modem This field only displays when you insert a 3G card and the internal modem on the unlock code 3G card is blocked. Enter a key to enable the internal modem on your 3G card. By default, the key is the last four digits of your phone number used to dial up the 3G connection. Otherwise, you need to get the key from your service provider. Apply Click Apply to save your changes in this section. Remaining Time This field is available only when you enable budget control in the 3G (WAN 2) Budget screen.

This shows the amount of time (in hours and minutes) the 3G connection can still be used before the ZyXEL Device takes the actions you specified in the 3G (WAN 2) screen.

Remaining Data Budget

This field is available only when you enable budget control in the Network > WAN > 3G (WAN 2) screen.

This shows how much data (in bytes) can still be transmitted through the 3G connection before the ZyXEL Device takes the actions you specified in the 3G (WAN 2) screen.

Note: The budget counters will not be reset when you restore the factory defaults. The budget counters are saved to the flash every hour or when the 3G connection is dropped. If you restart the ZyXEL Device within one hour, any change in the counters will not be saved.

Reset time and data budget counters

This button is available only when you enable budget control in the 3G (WAN 2) screen.

Click this button to reset the time and data budgets. The count starts over with the 3G connection's full configured monthly time and data budgets. This does not affect the normal monthly budget restart.

NBG410W3G Series Users Guide 51

Chapter 2 Introducing the Web Configurator

Table 4 Web Configurator HOME Screen (continued)

LABEL DESCRIPTION Latest Alerts This table displays the five most recent alerts recorded by the ZyXEL Device. You can see more information in the View Log screen, such as the source and destination IP addresses and port numbers of the incoming packets.

Date/Time This is the date and time the alert was recorded.

Message This is the reason for the alert.

Port Statistics Click Port Statistics to see router performance statistics such as the number of packets sent and number of packets received for each port.

DHCP Table Click DHCP Table to show current DHCP client information.

Bandwidth Click Bandwidth to view the ZyXEL Device's bandwidth usage and allotments.

2.4.4 Navigation Panel

After you enter the password, use the sub-menus on the navigation panel to configure ZyXEL Device features.

The following table describes the sub-menus.

Table 5 Screens Summary

LINK TAB FUNCTION HOME This screen shows the ZyXEL Device's general device and network status information. Use this screen to access the wizards, statistics and DHCP table. NETWORK LAN LAN Use this screen to configure LAN DHCP and TCP/IP settings. Static DHCP Use this screen to assign fixed IP addresses on the LAN. IP Alias Use this screen to partition your LAN interface into subnets. Port Roles Use this screen to change the LAN/DMZ port roles. WAN General This screen allows you to configure operation mode, route priority and connection test. WAN1 Use this screen to configure the WAN1 connection for Internet access. G (WAN2) Use this screen to configure the WAN2 connection for Internet access. Traffic Use this screen to configure your traffic redirect properties and Redirect parameters. DMZ DMZ Use this screen to configure your DMZ connection. Static DHCP Use this screen to assign fixed IP addresses on the DMZ. IP Alias Use this screen to partition your DMZ interface into subnets. Port Roles Use this screen to change the LAN/DMZ port roles on the ZyXEL Device. WIRELESS 3G (WAN2) G (WAN2) Use this screen to configure the WAN2 connection for Internet

Chapter 2 Introducing the Web Configurator

Table 5 Screens Summary (continued)

LINK TAB FUNCTION Wi-Fi Wireless Card | Use this screen to configure the wireless LAN settings. Security Use this screen to configure the Wi-Fi security settings. MAC Filter Use this screen to change MAC filter settings on the ZyXEL Device SECURITY FIREWALL Default Rule Use this screen to activate/deactivate the firewall and the direction

of network traffic to which to apply the rule

This screen shows a summary of the firewall rules, and allows you to edit/add a firewall rule.

Anti-Probing Use this screen to change your anti-probing settings. Threshold Use this screen to configure the threshold for Dos attacks. Service Use this screen to configure custom services.

CERTIFICATES My Certificates

Use this screen to view a summary list of certificates and manage certificates and certification requests.

Use this screen to view and manage the list of the trusted CAs.

Trusted Remote Hosts

Use this screen to view and manage the certificates belonging to the trusted remote hosts.

Directory Use this screen to view and manage the list of the directory Servers servers.

AUTH SERVER | Local User Use this screen to configure the local user account(s) on the Database ZyXEL Device. RADIUS Configure this screen to use an external server to authenticate

ADVANCED NAT NAT Overview | Use this screen to enable NAT. Address Use this screen to configure network address translation mapping Mapping rules. Port Use this screen to configure servers behind the ZyXEL Device. Forwarding Port Use this screen to change your ZyXEL Device's port triggering Triggering settings.

STATIC ROUTE IP Static Route

Use this screen to configure IP static routes.

DNS System Use this screen to configure the address and name server records.

Cache Use this screen to configure the DNS resolution cache.

DHCP Use this screen to configure LAN/DMZ DNS information.

DDNS Use this screen to set up dynamic DNS.

NBG410W36G Series User's Guide

Table 5 Screens Summary (continued)

LINK TAB FUNCTION REMOTE MWw Use this screen to configure through which interface(s) and from MGMT which IP address(es) users can use HTTPS or HTTP to manage the ZyXEL Device. SSH Use this screen to configure through which interface(s) and from which IP address(es) users can use Secure Shell to manage the ZyXEL Device. TELNET Use this screen to configure through which interface(s) and from which IP address(es) users can use Telnet to manage the ZyXEL Device. FTP Use this screen to configure through which interface(s) and from which IP address(es) users can use FTP to access the ZyXEL Device. SNMP Use this screen to configure your ZyXEL Device's settings for Simple Network Management Protocol management. DNS Use this screen to configure through which interface(s) and from which IP address(es) users can send DNS queries to the ZyXEL Device. CNM Use this screen to configure and allow your ZyXEL Device to be managed by the Vantage CNM server. UPnP UPnP Use this screen to enable UPnP on the ZyXEL Device. Ports Use this screen to view the NAT port mapping rules that UPnP creates on the ZyXEL Device. Custom APP Custom APP | Use this screen to specify port numbers for the ZyXEL Device to monitor for FTP, HTTP, SMTP, POP3, H323, and SIP traffic. ALG ALG Use this screen to allow certain applications to pass through the ZyXEL Device. LOGS View Log Use this screen to view the logs for the categories that you selected. Log Settings Use this screen to change your ZyXEL Device's log settings. Reports Use this screen to have the ZyXEL Device record and display the network usage reports. MAINTENANCE | General This screen contains administrative. Password Use this screen to change your password. Time and Date | Use this screen to change your ZyXEL Device's time and date. F/W Upload Use this screen to upload firmware to your ZyXEL Device Backup & Use this screen to backup and restore the configuration or reset Restore the factory defaults to your ZyXEL Device. Restart This screen allows you to reboot the ZyXEL Device without turning the power off. LOGOUT Click this label to exit the web configurator.

Click Port Statistics in the HOME screen. Read-only information here includes port status and packet specific statistics. The Automatic Refresh Interval field is configurable.

NBG410W36G Series Users Guide

Automatic Refresh Interval | None e RSRED The following table describes the labels in this screen. Table 6 HOME > Show Statistics LABEL DESCRIPTION kW] Click the icon to display the chart of throughput statistics. Port These are the ZyXEL Device's interfaces. Status For the WAN interface(s), this displays the port speed and duplex setting if you're using Ethernet encapsulation or the remote node name for a PPP connection and Down (line is down or not connected), Idle (line (ppp) idle), Dial (starting to trigger a call) or Drop (dropping a call) if you're using PPPOE encapsulation. For the LAN or DMZ ports, this displays the port speed and duplex setting. For the Wi-Fi card, this displays the transmission rate when Wi-Fi is enabled or Down when Wi-Fi is disabled. TxPkts This is the number of transmitted packets on this port. RxPkts This is the number of received packets on this port. Tx B/s This displays the transmission speed in bytes per second on this port. Rx B/s This displays the reception speed in bytes per second on this port. Up Time This is the total amount of time the line has been up. System Up Time | This is the total time the ZyXEL Device has been on. Automatic Select a number of seconds or None from the drop-down list box to update all Refresh Interval | screen statistics automatically at the end of every time interval or to not update the screen statistics. Refresh Click this button to update the screen's statistics immediately.

2.4.6 Show Statistics: Line Chart

Click the icon in the Show Statistics screen. This screen shows you a line chart of each port’s throughput statistics.

Mhroughput Range [roc [es Set Range

The following table describes the labels in this screen. Table 7 HOME > Show Statistics > Line Chart

ju] Click the icon to go back to the Show Statistics screen.

Port Select the check box(es) to display the throughput statistics of the corresponding interface(s).

B/s Specify the direction of the traffic for which you want to show throughput statistics in this table.

Select Tx to display transmitted traffic throughput statistics and the amount of traffic (in bytes). Select Rx to display received traffic throughput statistics and the amount of traffic (in bytes).

Throughput Set the range of the throughput (in B/s, KB/s or MB/s) to display. Range Click Set Range to save this setting back to the ZyXEL Device.

2.4.7 DHCP Table Screen

DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to obtain TCP/IP configuration at start-up from a server. You can configure the ZyXEL Device as a DHCP server or disable it. When configured as a server, the ZyXEL Device provides the TCP/IP configuration for the clients. If DHCP service is disabled, you must have another DHCP server on your LAN, or else the computer must be manually configured.

Click Show DHCP Table in the HOME screen. Read-only information here relates to your DHCP status. The DHCP table shows current DHCP client information (including IP Address, Host Name and MAC Address) of all network clients using the ZyXEL Device’s DHCP server.

NBG410W36G Series Users Guide

The following table describes the labels in this screen. Table 8 HOME > DHCP Table

LABEL DESCRIPTION Interface Select LAN or DMZ to show the current DHCP client information for the specified interface.

# This is the index number of the host computer.

IP Address This field displays the IP address relative to the # field listed above.

Host Name This field displays the computer host name.

MAC Address | The MAC (Media Access Control) or Ethernet address on a LAN (Local Area Network) is unique to your computer (six pairs of hexadecimal notation).

A network interface card such as an Ethernet adapter has a hardwired address that is assigned at the factory. This address follows an industry standard that ensures no other adapter has a similar address.

Reserve Select the check box in the heading row to automatically select all check boxes or select the check box(es) in each entry to have the ZyXEL Device always assign the selected entry(ies)'s IP address(es) to the corresponding MAC address(es) (and host name(s)). You can select up to 128 entries in this table. After you click Apply, the MAC address and IP address also display in the corresponding LAN or DMZ Static DHCP screen (where you can edit them).

Refresh Click Refresh to reload the DHCP table.

NBG410W3G Series Users Guide 57

This chapter provides information on the Wizard Setup screens in the web configurator.

3.1 Wizard Setup Overview

The web configurator's setup wizards help you configure Internet connection settings.

In the HOME screen, click the wizard icon zaro C2) to open the Wizard Setup Welcome screen. The following summarizes the wizards you can select:

+ Internet Access Setup Click this link to open a wizard to set up an Internet connection for WAN 1 (the WAN port) on the ZyXEL Device.

Figure 13 Wizard Setup Welcome

Welcome to the NBG410W3G Wizard Setup

internet Access Setup {helps user quickly configure the NBG410W36 to secure Internet connection)

The Internet access wizard screen has three variations depending on what encapsulation type you use. Refer to information provided by your ISP to know what to enter in each field. Leave a field blank if you don't have that information.

3.2.1 ISP Parameters

The ZyXEL Device offers three choices of encapsulation. They are Ethernet, PPTP or PPPOE.

NBG410W3G Series Users Guide 59

Chapter 3 Wizard Setup

The wizard screen varies according to the type of encapsulation that you select in the Encapsulation field.

For ISPs (such as Telstra) that send UDP heartbeat packets to verify that the customer is still online, please create a WAN-to-WAN/ZyXEL Device firewall rule for those packets. Contact your ISP to find the correct port number.

Choose Ethernet when the WAN port is used as a regular Ethernet port.

WAN IP Address Assignment

LABEL DESCRIPTION ISP Parameters for Internet Access

You must choose the Ethernet option when the WAN port is used as a regular Ethernet. Otherwise, choose PPPOE or PPTP for a dial-up connection.

Assignment IP Address Select Dynamic If your ISP did not assign you a fixed IP address. This is the Assignment default selection. Select Static If the ISP assigned a fixed IP address. The fields below are available only when you select Static. My WAN IP Enter your WAN IP address in this field. Address My WAN IP Enter the IP subnet mask in this field. Subnet Mask

Chapter 3 Wizard Setup

LABEL DESCRIPTION Gateway IP Enter the gateway IP address in this field.

First DNS Server | Enter the DNS server's IP address(es) in the field(s) to the right.

Second DNS Leave the field as 0.0.0.0 if you do not want to configure DNS servers. If you do not

Server configure a DNS server, you must know the IP address of a machine in order to access it.

Back Click Back to return to the previous wizard screen.

Finish Click Finish to save your changes and go to the next screen.

3.2.1.2 PPPOE Encapsulation

Point-to-Point Protocol over Ethernet (PPPOE) functions as a dial-up connection. PPPOE is an

gineering Task Force) standard specifying how a host personal computer

interacts with a broadband modem (for example DSL, cable, wireless, etc.) to achieve access to high-speed data networks.

Figure 15 ISP Parameters: PPPOE Encapsulation

You can select ethernet, PPPOE or PPTP according to in which the network you are, If you don't know, please ask your network administrator, The most popular type of network is

Idle Timeout hoo (Seconds)

WAN IP Address Assignment

The following table describes the labels in this screen. Table 10 ISP Parameters: PPPOE Encapsulation

LABEL DESCRIPTION ISP Parameter for Internet Access

Choose an encapsulation method from the pull-down list box. PPP over Ethernet forms a dial-up connection.

Type the name of your service provider.

NBG410W3G Series Users Guide 61

Chapter 3 Wizard Setup

Table 10 ISP Parameters: PPPOE Encapsulation (continued)

LABEL DESCRIPTION User Name Type the user name given to you by your ISP.

Password Type the password associated with the user name above.

Retype to Type your password again for confirmation.

Nailed-Up Select Naïiled-Up if you do not want the connection to time out.

Idle Timeout Type the time in seconds that elapses before the router automatically disconnects

from the PPPOE server. The default time is 100 seconds.

Assignment IP Address Select Dynamic If your ISP did not assign you a fixed IP address. This is the Assignment default selection. Select Static If the ISP assigned a fixed IP address. The fields below are available only when you select Static. My WAN IP Enter your WAN IP address in this field. Address First DNS Server | Enter the DNS server's IP address(es) in the field(s) to the right. Second DNS Leave the field as 0.0.0.0 if you do not want to configure DNS servers. If you do not Server configure a DNS server, you must know the IP address of a machine in order to access it. Back Click Back to return to the previous wizard screen. Finish Click Finish to save your changes and go to the next screen.

3.2.1.3 PPTP Encapsulation

Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables transfers of data from a remote client to a private server, creating a Virtual Private Network (VPN) using TCP/ IP-based networks.

PPTP supports on-demand, multi-protocol, and virtual private networking over public networks, such as the Internet.

The ZyXEL Device supports one PPTP server connection at any given time.

NBG410W36G Series Users Guide

WAN IP Address Assignment

LABEL DESCRIPTION ISP Parameters for Internet Access

Select PPTP from the drop-down list box. To configure a PPTP client, you must configure the User Name and Password fields for a PPP connection and the PPTP parameters for a PPTP connection.

User Name Type the user name given to you by your ISP.

Password Type the password associated with the User Name above.

Retype to Confirm | Type your password again for confirmation.

Nailed-Up Select Nailed-Up if you do not want the connection to time out.

Idle Timeout Type the time in seconds that elapses before the router automatically disconnects from the PPTP server.

My IP Address Type the (static) IP address assigned to you by your ISP.

Type the subnet mask assigned to you by your ISP (if given).

Type the IP address of the PPTP server.

NBG410W36G Series User's Guide 63

Chapter 3 Wizard Setup

Table 11 ISP Parameters: PPTP Encapsulation

Enter the connection ID or connection name in this field. It must follow the "c:id" and "n'name" format. For example, C:12 or N:My ISP. This field is optional and depends on the requirements of your xXDSL modem.

Assignment IP Address Select Dynamic |f your ISP did not assign you a fixed IP address. This is the Assignment default selection. Select Static If the ISP assigned a fixed IP address. The fields below are available only when you select Static. My WAN IP Enter your WAN IP address in this field. Address First DNS Server Enter the DNS server's IP address(es) in the field(s) to the right. Second DNS Leave the field as 0.0.0.0 if you do not want to configure DNS servers. If you do Server not configure a DNS server, you must know the IP address of a machine in order to access it. Back Click Back to return to the previous wizard screen. Finish Click Finish to save your changes and go to the next screen.

3.2.2 Internet Access Wizard Setup Complete

The congratulations screen displays. Click Close to complete the Internet access setup.

Figure 17 Internet Access Setup Complete

Congratulations, The Internet access wizard configuration is complete, Check our exciting range of ZyXEL products at http://www.2yxel.com.

Having Internet Access problems?

Recheck your settings in this wizard.

1f your wizard entries are correct, but still cannot access the Internet, then check that your ISP account is active and that the settings you entered in the wizard are correct.

1f you still have problems, please contact customer support.

NBG410W36G Series Users Guide

This section describes how to do the following.

1 Set up a DMZ (De-Militarized Zone).

2 Use an H.323 VolP phone on your LAN.

3 Use NAT (Network Address Translation) with multiple public IP addresses. 4 Allow multiple game players to connect to the same server.

The DMZ is a separate network for devices that provide services to users on the Internet. Devices such as a web or e-mail server are more prone to security threats as they are more visible from the Internet and more frequently accessed than devices on your LAN. By placing such devices on a DMZ, you can better restrict access to the devices on your LAN.

The diagram shows servers on the DMZ which are open to public access but protected by the ZyXEL Device’s firewall. Devices which require greater security are located on the LAN.

Figure 18 DMZ Overview

LS Internet D In this situation a file server is located in the DMZ. The file server is available for public access from the Internet and also from computers located on the LAN.

You can use either public or private IP addresses for your DMZ, however the DMZ must be on a different subnet or network from the LAN.

NBG410W36G Series Users Guide 65

In this example the DMZ uses private IP addresses and the default subnet mask of 255.255.255.0. (See Appendix C on page 377 for information on subnetting.) You can also use a static public IP address for your file server.

Follow these steps to set up your DMZ with a private or a public IP address.

4.2.1.1 Private IP Address

1 Click NETWORK > DMZ to open the DMZ screen. In the DMZ TCP/IP field type your DMZ IP address in the IP address field. In the IP Subnet Mask field type the same subnet mask as that used on the LAN.

2 Select Server from the drop-down list in the DHCP field to have the ZyXEL Device dynamically assign IP addresses to devices on the DMZ. In the IP Pool Starting Address field type the first available IP address for the DMZ subnetwork. In this example 192.168.2.33 is used. Skip to Section 4.2.1.3 on page 67.

4.2.1.2 Public IP Address Either configure a static IP address on the server directly using the server’s operating system, or follow these steps to set up static DHCP on the ZyXEL Device. 1 Click NETWORK > DMZ > Static DHCP to open the Static DHCP screen.

2 Type the MAC address of the file server in the MAC Address field and a valid IP address on your DMZ in the IP Address field. In this example the MAC address is 00:A0:C5:00:00:02 and the IP address is 192.168.2.33.

3 Click Apply. That completes setup of static DHCP on the ZyXEL Device.

66 NBG410W3G Series Users Guide

4.2.1.3 Public and Private IP Addresses

1 In Windows Networking (NetBIOS over TCP/IP) select Allow between DMZ and LAN. In this example, both the file server on the DMZ and a computer on the LAN use a Windows OS. Enable NetBIOS to allow LAN computers to use Windows programs such as Windows Explorer to access the server on the DMZ.

3 Ensure NAT (Network Address Translation) is enabled on your WAN to allow the ZyXEL Device to manage the IP addresses of traffic it routes between networks. Click ADVANCED > NAT. For your WAN connection select . In this example NAT is enabled in the Enable NAT field on WANI and SUA is selected. For more information on this screen see Chapter 12 on page 225.

NAT Address Mapping _ Port Forwarding Port Triggering

This completes basic setup of your DMZ.

4.2.2 Advanced Setup

In this scenario the file server runs an FTP (File Transfer Protocol) download service. Since FTP is not compatible with NAT, you can use the ALG (Application Layer Gateway) to manage FTP. (See for more information.)

To allow FTP sessions to be initiated by users on the WAN, port-forwarding is also required (see for more information) and for port-forwarding the file server needs a static IP address.

ALG Setup To turn on the ZyXEL Device’s FTP ALG, click ADVANCED > ALG. Select Enable FTP ALG and click Apply.

Port Forwarding Setup

To configure port forwarding, first configure a static IP on the file server if you haven’t already. See Section 4.2.1.2 on page 66. Click ADVANCED > NAT > Port Forwarding to open the Port Forwarding screen.

In the WAN Interface field select the correct WAN for your network. This example uses WANI.

In the rule row you are configuring select Active.

In the Name field type a descriptive name for the port forwarding rule. This example uses FTP.

In the Incoming Port(s) field type the port number used by the FTP application. This example uses 69.

In the Server IP Address field type the IP address of your file server. This example uses 192.168.1.33.

Figure 24 DMZ Tutorial: ADVANCED > NAT > Port Forwarding

NAT Overview Address Mapping DPortForwardingll_ Port Triggering

[# lactivel_Name | _incomingPort(s) _[ PortTranslation __| Server1P Address |

Note 1: You may also need to create a Firewall rule Note 2: Port Translation is optional.

This completes setup of NAT-incompatible services on the server in your DMZ. Now users can access the file server on your DMZ from the Internet.

4.3 Firewall Rule Setup

Your ZyXEL Device’s firewall default settings provide network security by allowing traffic from the WAN to your DMZ, and blocking traffic from the DMZ to the LAN. However, you can further enhance network security by defining firewall rules specifically for traffic from the WAN to the DMZ.

You need to define two rules - one to drop all traffic from the WAN to the DMZ, the other to permit HTTP and FTP traffic from the WAN to the DMZ. This ensures that only HTTP and FTP traffic from the WAN to the DMZ is permitted and all other traffic is blocked.

If you have not already done so, define a static IP address for the file server (see step 1 on page 69 for instructions).

1 Click SECURITY > Firewall > Rule Summary to display the Rule Summary screen. Use this screen to configure firewall rules on traffic between the file server and the WAN. In this example, traffic from WANI to the the file server is restricted to HTTP and FTP traffic.

2 The Rule Summary screen appears. Select WANI and DMZ from the drop-down list in the Packet Direction field and click Refresh. Click the Modify (ff) icon to add a new rule.

Figure 25 DMZ Tutorial: SECURITY > Firewall > Rule Summary

Default Rule _ MRüleSummarÿI] _ anti-Probing Threshold Service

Packet Direction: [ANT irc MZ x Retresh

WAN1 to DMZ - Default Policy mit -tT-t = I = Do. 1-1-1-1

3 The Firewall - Edit screen appears. Type the name of the firewall rule in the Rule Name field. In this example WAN12DMZ - DENY is used.

4 Inthe Edit Source Address section select Any Address in the drop-down box in the Address Type field to define the source address of traffic from the Internet as any IP address.

5 Inthe Edit Destination Address section select Single Address in the drop-down box in the Address Type field. Type the destination address of traffic in the Start IP Address field. In this case the WANI IP address is used - 123.23.23.23. If you are using a public static IP address for your web server, type the server’s IP address in this field.

6 Click Add so that the IP address appears in the Destination Address(es) field.

7 Inthe Edit Service section of the Firewall - Edit screen select Any so that they appear in the Selected Service(s) field.

8 Inthe Action for Matched Packets field select Drop from the drop-down box.

9 In the Edit Service section select FTP and click the arrow icon. Then select HTTP and click the arrow icon again so that FTP and HTTP appear in the Selected Service(s) field.

FIREWALL - EDIT RULE

2OMZ - DROP Edit Source Addres

Edit Destination Address

11 Repeat the firewall rule setup procedure to set up a rule for WANI to DMZ traffic with the same source and destination addresses. In the Edit Service section of the Firewall - Edit screen select HTTP and FTP so that they appear in the Selected Service(s) field.

12 In the Action for Matched Packets field select Permit from the drop-down list and

13 In the Rule Summary screen select Any and Any from the drop-down list in the Packet Direction fields and click Refresh to check your firewall rule settings.

NBG410W36G Series User's Guide

Packet Direction: [want |) rofour ] _Retresh Source Destination

EDR ES ON EE EE D CP WAN1 to DMZ - Default Policy : Drop

Manon 2 ME TE OC This completes setup of a firewall rules for the file server on your DMZ.

4.4 Setting Up a VolP Phone with H.323

You can use the ZyXEL Device to manage calls from your VoIP enabled phone using H.323. The following diagram shows an example of a VoIP phone configured to make calls over the Internet.

Figure 28 Tutorial: H.323 Phone Setup

+ WAN: 192.168.1.33 123.23.23.23

To configure your ZyXEL Device to allow VoIP phone calls using your H.323 phone, you need to set up the H.323 ALG (Application Layer Gateway) and port forwarding, which in turn requires a fixed IP address for your phone.

IP Address Settings Follow these steps to give your phone a fixed IP address.

1 Click NETWORK > LAN > Static DHCP to open the Static DHCP screen.

2 Type the MAC address of your device in the MAC Address field and a valid IP address on your LAN in the IP Address field. In this example the MAC address is 00:A0:C5:00:00:02 and the IP address is 192.168.1.33.

4 Click NETWORK > LAN to display the LAN screen. Ensure that Server is selected in the drop-down box in the DHCP field.

Set up ALG Follow these steps to set up ALG (Application Layer Gateway) to let your ZyXEL Device manage H.323 traffic. (For more information on ALG see Chapter 18 on page 293.)

1 Click ADVANCED > ALG to display the ALG screen. Select Enable H.323 ALG and

click Apply. This configures ALG (Application Layer Gateway) to manage H.323 traffic through your ZyXEL Device.

Figure 30 H.323 Tutorial: ADVANCED > ALG ALG ALG Settings

Set up Port Forwarding

1 Click ADVANCED > NAT > Port Forwarding to display the Port Forwarding screen. 2 Select the correct WAN for your network in the WAN Interface field.

3 Select Active in the rule row you are configuring. 4

Type a descriptive name for the port forwarding rule in the Name field. In this example H.323 is used.

5 Type 1720 in the Incoming Port(s) field. This port number is used for the H.323 services.

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6 Type the IP address of your VolP phone in the Server IP Address field. In this example 192.168.1.33 is used.

Figure 31 H.323 Tutorial: ADVANCED > NAT > Port Forwarding

Port Forwarding Rules

Set up a Firewall Rule

1 Click SECURITY > Firewall > Rule Summary to display the Rule Summary screen and to configure firewall rules on traffic between the VoIP phone and the WAN. In this example, traffic between the file server and WANT is restricted to H.323 traffic.

2 The Rule Summary screen appears. Select DMZ and WANI from the drop-down list in the Packet Direction field and click Refresh. Click the Modify (ff) icon to add a new rule.

Figure 32 H.323 Tutorial: SECURITY > Firewall > Rule Summary

3 The Firewall - Edit screen appears. Type the name of the firewall rule in the Rule Name field. In this example LAN2WANI - H.323 is used.

4 Inthe Edit Source Address section select Single Address in the drop-down box in the Address Type field. Type the source address of H.323 traffic in the Start IP Address

NBG410W36G Series Users Guide

field - 123.23.23.23 and click Add so that the IP address appears in the Destination Address(es) field. If you are using a H.323 server, use its IP address instead.

5 Inthe Edit Destination Address section select Single Address in the drop-down box in the Address Type field. Type the destination address of H.323 traffic in the Start IP Address field - 192.168.1.33 and click Add so that the IP address appears in the Source Address(es) field.

6 Inthe Edit Service section select H.323 and click the arrow icon so that H.323 appears in the Selected Service(s) field.

Figure 33 H.323 Tutorial: SECURITY > Firewall > Rule Summary

FIREWALL - EDIT RULE Edit Source Address

Edit Destination Address

FTPCTCP-20,21) IHTTPCTCP-80) IHTTPS(TCP-443) AXAAXACUDP 4569)

IPSEC_TUNNEL(ESP:0) IRCCTCPAUDP:6867)

Actions When Matched

8 Repeat the firewall rule setup procedure to add a similar firewall rule for H.323 traffic from the WAN to the LAN, using the same WAN IP address and LAN IP address

9 Inthe Rule Summary screen select Any and Any from the drop-down list in the Packet Direction fields and click Refresh to check your firewall rule settings.

That completes setup of your H.323 VoIP phone.

4.5 Using NAT with Multiple Public IP Addresses

This section shows you examples of how to set up your ZyXEL Device if you have more than one fixed (static) IP address from your ISP.

4.5.1 Example Parameters and Scenario

The following table shows the public IP addresses from your ISP and your ZyXEL Device’s LAN IP address.

Public IP Addresses 12.34 to 1.2.3.7

ZyXEL Device’s LAN IP Address | 192.168.1.1

The following figure shows the network you want to set up in this example.

Assign the first public address (1.2.3.4) to the ZyXEL Device’s WAN 1 port.

Map the second and third public IP addresses (1.2.3.5 and 1.2.3.6) to the web and mail servers (192.168.1.12 and 192.168.1.13) respectively for traffic in both directions. Map the first public address (1.2.3.4) to outgoing traffic from other local computers. Map the first public address (1.2.3.4) to incoming traffic from WAN 1.

Forward FTP traffic using port 21 from WAN 1 to a specific local computer (192.168.1.39).

The last public IP address (1.2.3.7) is not mapped to any device and is reserved for future use.

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Figure 35 Tutorial Example: Using NAT with Static Public IP Addresses

LAN FTP Mapping rules: WAN 192.168.1.39

192.168.1.12 <> 1.2.3.5 (1-1) 192.168.1.13 <> 1.2.3.6 (1-1) Other outgoing LAN traffic ---> 1.2.3.4 (M-1)

192.168.1.12 192 168.113

To set up this network, we are going to:

1 Configure the WAN 1 connection to use the first public IP address (1.2.3.4). Configure NAT address mapping for other public IP addresses (1.2.3.5 and 1.2.3.6).

3 Configure NAT port forwarding to forward FTP traffic from WAN 1 to a specific computer on your local network.

4.5.2 Configuring the WAN Connection with a Static IP Address

The following table shows the information your ISP gave you for Internet connection.

Encapsulation PPPOE Public IP Addresses 12.34 12.3.5 1.2.3.6 1.2.3.7 Gateway IP Address 1.2.3.89 Subnet Mask 255.255.255.0 User Name exampleuser Password abcd1234 DNS Server 12.11 12.12

Follow the steps below to configure your ZyXEL Device for Internet access using PPPOE in this example.

78 NBG410W3G Series Users Guide

Figure 36 Tutorial Example: WAN Connection with a Static Public IP Address LAN WAN

\: 92.168.1 NN 1.2.3.4

Click NETWORK > WAN > WAN 1.

Select PPPOE (PPP over Ethernet) from the Encapsulation drop-down list box.

3 Inthe ISP Parameters for Internet Access section, enter the information (such as the user name and password) provided by your ISP. If your ISP didn’t give you the service name, leave the field blank.

4 Inthe WAN IP Address Assignment section, select Use Fixed IP Address and enter

the first fixed public IP address (1.2.3.4 in this example).

COS Figure 37 Tutorial Example: WAN 1 Screen WAN

3G(WAN2) Traffic Redirect

7 The System screen displays. Click the Insert button to configure the IP address of the DNS server the ZyXEL Device can query to resolve domain names.

8 Select Public DNS Server and enter the first DNS server”’s IP address given by your ISP. Click Apply.

Figure 39 Tutorial Example: DNS > System Edit-1

DNS - EDIT NAME SERVER RECORD Name Server Record

First DNS Second DNS 5e: Third

9 Enter the rule number (2) where you want to put the second record and click the Insert button to configure the second DNS server’s IP address as follows. Click Apply.

To resolve a domain name, theZyXEL Device checks it against the name server record entries in the order that they appear in this list.

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10 The DNS > System screen should look as shown.

11 Go to the Home screen to check your WAN connection status. Make sure the status is not down.

2008-02-25 05117119 WAN2 connection is up.

200M/Full 122.23.22.23/ DHCP dent | Renew 255,255.258,0

Wan z connected 133.333233/ IPC dent Drop | System Status ESA EEE Port Statistics DHCP Table 100M/Full 192.168.2.1/ DHCP semer N/A 255.255.255,0 100M/Full_0,0,0.0/ 0.0.0.0 Static wa

4.5.3 Public IP Address Mapping

To have the local computers and servers use specific WAN IP addresses, you need to map static public IP addresses to them.

Æ The one-to-one NAT address mapping rules are for both incoming and outgoing connections. The ZyXEL Device forwards traffic that is initiated from either the LAN or the WAN to the destination IP address.

Æ The many-to-one or many-to-many NAT address mapping rules are for outgoing connections only. That means only traffic initiated from the LAN or returned packets are allowed to go through the ZyXEL Device.

In this example, you create two one-to-one rules to map the internal web server (192.168.1.12) and mail server (192.168.1.13) to different static public IP addresses. The many-to-one rule maps a public IP address (1.2.3.4, that is, the ZyXEL Device’s WAN 1 IP address) to outgoing LAN traffic. It allows other local computers on the same subnet as the ZyXEL Device’s LAN IP address to use this IP address to access the Internet.

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Figure 43 Tutorial Example: Mapping Multiple Public IP Addresses to Inside Servers LAN Mapping rules: WAN 192.168.1.39 192.168.1.12 <> 1.2.3.5 (1-1)

The ZyXEL Device applies the rules in the order that you specify. You should put any one-to-one rules before a many-to-one rule.

1 Click ADVANCED > NAT.

2 Enable NAT and select Full Feature for the WAN 1 interface as you have multiple public IP addresses to map to private IP addresses. Click Apply.

NBG410W36G Series User's Guide

NAT Address Mapping _Port Forwarding

5 Click the first rule’s Edit icon (ff) in the Modify column to display the Address Mapping Rule screen.

NAT NAT Overview Port Forwarding Port Triggering

Full Feature Address Mapping Rules

6 Map a public IP address to the web server.

Select the One-to-One type and enter 192.168.1.12 as the local start IP address and 1.2.3.5 as the global start IP address. Click Apply.

Figure 46 Tutorial Example: NAT Address Mapping Edit: One-to-One (1)

NAT - ADDRESS MAPPING Address Mapping Rule

7 Click the second rule’s Edit icon (ff). 8 Map a public IP address to the mail server.

Select the One-to-One type and enter 192.168.1.13 as the local start IP address and 1.2.3.6 as the global start IP address. Click Apply.

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Figure 47 Tutorial Example: NAT Address Mapping Edit: One-to-One (2)

NAT - ADDRESS MAPPING Address Mapping Rule

9 Click the third rule’s Edit icon (5).

10 Map a public IP address to other outgoing LAN traffic. Select the Many-to-One type and enter 192.168.1.1 as the local start IP address, 192.168.1.254 as the local end IP address and 1.2.3.4 as the global start IP address. Click

Figure 48 Tutorial Example: NAT Address Mapping Edit: Many-to-One

NAT - ADDRESS MAPPING Address Mapping Rule

11 After the configurations, the Address Mapping screen looks as shown. You still have one IP address (1.2.3.7) that can be assigned to another internal server when you expand your network.

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SUA Address Mapping Rules

Full Feature Address Mapping Rules

EL To allow traffic from the WAN to be forwarded through the ZyXEL Device, you must also create a firewall rule. Refer to Section 4.5.5 on page 89 for more information.

4.5.4 Forwarding Traffic from the WAN to a Local Computer

A server NAT address mapping rule allows computers behind the NAT be accessible to the outside world. To have the ZyXEL Device forward incoming traffic to a specific computer on your local network, you should also create a port forwarding (server mapping) rule.

In this example, you want to forward FTP traffic using port 21 to the computer with the IP address of 192.168.1.39.

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Figure 50 Tutorial Example: Forwarding Incoming FTP Traffic to a Local Computer

LAN FTP Mapping rules: WAN 192.168.1.39 Incoming traffic <--- 1.2.3.4 (Server)

1 Click ADVANCED > NAT > Address Mapping. 2 Click the forth rule’s Edit icon (ff) to configure a server rule.

Figure 51 Tutorial Example: NAT Address Mapping Edit: Server

NAT - ADDRESS MAPPING Address Mapping Rule

3 Click the Port Forwarding tab. 4 Select WAN 1.

5 Select the Active check box, enter a descriptive name (FTP for example), incoming port number (21) and 192.168.1.39 as the server IP address. Click Apply.

NAT NAT Overview Address Mapping Port Triggering

Port Forwarding Rules

4.5.5 Allow WAN-to-LAN Traffic through the Firewall

By default, the ZyXEL Device blocks any traffic initiated from the WAN to the LAN. To have the ZyXEL Device forward traffic initiated from WAN 1 to a local computer or server on the LAN, you need to configure a firewall rule to allow it.

In this example, you create the firewall rules to allow traffic from the WAN to the following servers on the LAN:

+ Web server + Mail server + FTP server

Figure 53 Tutorial Example: Forwarding Incoming FTP Traffic to a Local Computer

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1 Click SECURITY > FIREWALL. 2 Make sure the firewall is enabled and traffic from WAN 1 to the LAN is dropped.

FIREWALL Rule Summary ___Anti-Probing Threshold Service

3 Goto the Rule Summary screen. 4 Select WANI to LAN as the packet direction and click Refresh. 5 Click the insert icon to create a new firewall rule.

6 Configure a firewall rule to allow HTTP traffic from the WAN to the web server.

Enter a descriptive name (W-L_Web for example). Select Any in the Destination Address(es) box and click Delete. Select Single Address as the destination address type. Enter 192.168.1.12 and click Add.

Figure 56 Tutorial Example: Firewall Rule: WAN to LAN Address Edit for Web Server

FIREWALL - EDIT RULE Edit Source Address

7 Select HTTP(TCP:80) and HTTPS(TCP:443) in the Available Services box on the left, and click >> to add them to the Selected Service(s) box on the right. Click Apply.

Actions When Matched

8 Click the insert icon to configure a firewall rule to allow traffic from the WAN to the mail

Enter a descriptive name (W-L_ Mail for example).

Select Any in the Destination Address(es) box and click Delete. Select Single Address as the destination address type. Enter 192.168.1.13 and click Add.

FIREWALL - EDIT RULE Edit Source Address

9 Select Any(AI) in the Available Services box on the left, and click >> to add it to the Selected Service(s) box on the right. Click Apply.

Figure 59 Tutorial Example: Firewall Rule: WAN to LAN Service Edit for Mail Server

Actions When Matched

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10 Click the insert icon to configure a firewall rule to allow FTP traffic from the WAN to the FTP server.

Enter a descriptive name (W-L_FTP for example). Select Any in the Destination Address(es) box and click Delete. Select Single Address as the destination address type. Enter 192.168.1.39 and click Add.

Figure 60 Tutorial Example: Firewall Rule: WAN to LAN Address Edit for FTP Server

FIREWALL - EDIT RULE Edit Source Address

11 Select FTP(TCP:20,21) in the Available Services box on the left, and click >> to add it to the Selected Service(s) box on the right. Click Apply.

Actions When Matched

12 When you are done, the Rule Summary screen looks as shown.

Name _ [Active \ädress| Address

WANI1 to LAN - Default Polil

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4.5.6 Testing the Connections

1 Open the web browser on one of the local computers and enter any web site’s URL in the address bar. If you can access the web site, your WAN 1 connection and NAT address mapping are configured successfully. If you cannot access it, make sure you entered the correct information in the WAN and NAT Address Mapping screens. Also check that the Internet account is active and the computer’s IP address is in the same subnet as the ZyXEL Device.

2 Open your web browser and try accessing the web server (1.2.3.5) from the outside network. If you cannot access the web server, make sure the NAT address mapping rule is configured correctly and there is a firewall rule to allow HTTP traffic from the WAN to the web server.

3 Try accessing the FTP server (1.2.3.4) from the outside network to send or retrieve a file. If you cannot access the FTP server, make sure the NAT port forwarding rule is active and there is a firewall rule to allow FTP traffic from the WAN to FTP server.

4.6 Using NAT with Multiple Game Players

Iftwo users (behind the ZyXEL Device) want to connect to the same server to play online games at the same time, but the server does not allow more than one login from the same IP address, you can configure a many-to-many rule instead of a many-to-one rule.

In this example, you have four static IP addresses (1.2.3.4 to 1.2.3.7) from your ISP. After you set up your WAN connection (see Section 4.5.2 on page 78), use the NAT > Address Mapping screen to map the third and forth public IP addresses to the mail server (192.168.1.12) and web server (192.168.1.13) respectively. The first and second public IP addresses are mapped to other outgoing LAN traffic. See Section 4.5.3 on page 82 for more information about IP address mapping.

When you finish configuration, the screen looks as shown.

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Full Feature Address Mapping Rules

Local Start 1P_| Local End 1P_| Global Start IP] Global End 1P EL To allow traffic from the WAN to be forwarded through the ZyXEL Device, you

must also create a firewall rule. Refer to Section 4.5.5 on page 89 for more information.

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This chapter describes how to configure LAN settings.

5.1 LAN, WAN and the ZyXEL Device

A network is a shared communication system to which many computers are attached.

The Local Area Network (LAN) includes the computers and networking devices in your home or office that you connect to the ZyXEL Device’s LAN ports.

The Wide Area Network (WAN) is another network (most likely the Internet) that you connect to the ZyXEL Device’s WAN port. See Chapter 6 on page 111 for how to use the WAN screens to set up your WAN connection.

The LAN and the WAN are two separate networks. The ZyXEL Device controls the traffic that goes between them. The following graphic gives an example.

Figure 64 LAN and WAN LAN [EN WAN

5.2 IP Address and Subnet Mask

Similar to the way houses on a street share a common street name, so too do computers on a LAN share one common network number.

Where you obtain your network number depends on your particular situation. If the ISP or your network administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask.

Ifthe ISP did not explicitly give you an IP network number, then most likely you have a single user account and the ISP will assign you a dynamic IP address when the connection is established. If this is the case, it is recommended that you select a network number from 192.168.0.0 to 192.168.255.0 and you must enable the Network Address Translation (NAT)

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feature of the ZyXEL Device. The Internet Assigned Number Authority (LANA) reserved this block of addresses specifically for private use; please do not use any other number unless you are told otherwise. If you select 192.168.1.0 as the network number; it covers 254 individual addresses, from 192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other words, the first three numbers specify the network number while the last number identifies an individual computer on that network.

Once you have decided on the network number, pick an IP address that is easy to remember, for instance, 192.168.1.1, for your ZyXEL Device, but make sure that no other device on your network is using that IP address.

The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the ZyXEL Device unless you are instructed to do otherwise.

5.2.1 Private IP Addresses

Every machine on the Internet must have a unique address. If your networks are isolated from the Internet, for example, only between your two branch offices, you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of IP addresses specifically for private networks:

+ 10.0.0.0 —10.255.255.255

+ 172.16.0.0 —172.31.255.255

+ 192.168.0.0 — 192.168.255.255 You can obtain your IP address from the IANA, from an ISP or it can be assigned from a private network. If you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses.

Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space.

The ZyXEL Device can use DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) to automatically assign IP addresses subnet masks, gateways, and some network information like the IP addresses of DNS servers to the computers on your LAN. You can alternatively have the ZyXEL Device relay DHCP information from another DHCP server. If you disable the ZyXEL Device’s DHCP service, you must have another DHCP server on your LAN, or else the computers must be manually configured.

Chapter 5 LAN Screens

The ZyXEL Device is pre-configured with a pool of IP addresses for the computers on your LAN. See Chapter 22 on page 345 for the default IP pool range. Do not assign your LAN computers static IP addresses that are in the DHCP pool.

RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to exchange routing information with other routers. RIP Direction controls the sending and receiving of RIP packets. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received.

RIP Version controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology.

Both RIP-2B and RIP-2M send routing data in RIP-2 format; the difference being that RIP- 2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also.

By default, RIP Direction is set to Both and RIP Version to RIP-1.

Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient) or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of hosts on the network - not everybody and not just 1.

IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236. The class D IP address is used to identify host groups and can be in the range 224.0.0.0 to 239.255.255.255. The address 224.0.0.0 is not assigned to any group and is used by IP multicast computers. The address 224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts (including gateways). AIl hosts must join the 224.0.0.1 group in order to participate in IGMP. The address 224.0.0.2 is assigned to the multicast routers group.

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The ZyXEL Device supports both IGMP version 1 (IGMP-v1) and IGMP version 2 (IGMP- v2). At start up, the ZyXEL Device queries all directly connected networks to gather group membership. After that, the ZyXEL Device periodically updates this information. IP multicasting can be enabled/disabled on the ZyXEL Device LAN and/or WAN interfaces in the web configurator (LAN; WAN). Select None to disable IP multicasting on these interfaces.

5.6 WINS WINS (Windows Internet Naming Service) is a Windows implementation of NetBIOS Name Server (NBNS) on Windows. It keeps track of NetBIOS computer names. It stores a mapping table of your network’s computer names and IP addresses. The table is dynamically updated for IP addresses assigned by DHCP. This helps reduce broadcast traffic since computers can query the server instead of broadcasting a request for a computer name’s IP address. In this way WINS is similar to DNS, although WINS does not use a hierarchy (unlike DNS). A network can have more than one WINS server. Samba can also serve as a WINS server.

Click NETWORK > LAN to open the LAN screen. Use this screen to configure the ZyXEL Device’s IP address and other LAN TCP/IP settings as well as the built-in DHCP server capability that assigns IP addresses and DNS servers to systems that support DHCP client capability.

The following table describes the labels in this screen.

Table 12 NETWORK > LAN LABEL DESCRIPTION LAN TCP/IP IP Address Type the IP address of your ZyXEL Device in dotted decimal notation. 192.168.1.1

is the factory default. Alternatively, click the right mouse button to copy and/or paste the IP address.

IP Subnet Mask | The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device automatically calculates the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the ZyXEL Device.

RIP Direction RIP (Routing Information Protocol, RFC1058 and RFC 1389) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets. Select the RIP direction from Both/In Only/Out Only/None. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received. Both is the default.

RIP Version The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sendbs the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, RIP direction is set to Both and the Version set to RIP-1.

Multicast Select IGMP V-1 or IGMP V-2 or None. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

DHCP DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients (workstations) to obtain TCP/IP configuration at startup from a server. Unless you are instructed by your ISP, leave this field set to Server. When configured as a server, the ZyXEL Device provides TCP/IP configuration for the clients. When set as a server, fill in the IP Pool Starting Address and Pool Size fields.

Select Relay to have the ZyXEL Device forward DHCP requests to another DHCP server. When set to Relay, fill in the DHCP Server Address field.

Select None to stop the ZyXEL Device from acting as a DHCP server. When you select None, you must have another DHCP server on your LAN, or else the computers must be manually configured.

IP Pool Starting | This field specifies the first of the contiguous addresses in the IP address pool.

Pool Size This field specifies the size, or count of the IP address pool.

DHCP Server Type the IP address of the DHCP server to which you want the ZyXEL Device to Address relay DHCP requests. Use dotted decimal notation. Alternatively, click the right

mouse button to copy and/or paste the IP address.

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Table 12 NETWORK > LAN (continued)

LABEL DESCRIPTION DHCP WINS Type the IP address of the WINS (Windows Internet Naming Service) server that

Server 1, 2 you want to send to the DHCP clients. The WINS server keeps a mapping table of the computer names on your network and the IP addresses that they are currently using.

Windows NetBlOS (Network Basic Input/Output System) are TCP or UDP packets that

Networking enable a computer to connect to and communicate with a LAN. For some dial-up

(NetBlOS over services such as PPPOE or PPTP, NetBlOS packets cause unwanted calls.

TCP/IP) However it may sometimes be necessary to allow NetBlOS packets to pass

through to the WAN in order to find a computer on the WAN.

Allow between LAN and WAN1

Select this check box to forward NetBlOS packets from the LAN to WAN 1and from WAN 1 to the LAN. If your firewall is enabled with the default policy set to block WAN 1 to LAN traffic, you also need to enable the default WAN 1 to LAN firewall rule that forwards NetBlOS traffic.

Clear this check box to block all NetBlOS packets going from the LAN to WAN 1 and from WAN 1 to the LAN.

Allow between LAN and WAN2

Select this check box to forward NetBlOS packets from the LAN to WAN 2 and from WAN 2 to the LAN. If your firewall is enabled with the default policy set to block WAN 2 to LAN traffic, you also need to enable the default WAN 2 to LAN firewall rule that forwards NetBlOS traffic.

Clear this check box to block all NetBlOS packets going from the LAN to WAN 2 and from WAN 2 to the LAN.

LAN and DMZ Select this check box to forward NetBlOS packets from the LAN to the DMZ and from the DMZ to the LAN. If your firewall is enabled with the default policy set to block DMZ to LAN traffic, you also need to enable the default DMZ to LAN firewall rule that forwards NetBlOS traffic.

Clear this check box to block all NetBlOS packets going from the LAN to the DMZ and from the DMZ to the LAN.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

5.8 LAN Static DHCP This table allows you to assign IP addresses on the LAN to specific individual computers based on their MAC Addresses.

Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02.

To change your ZyXEL Device’s static DHCP settings, click NETWORK > LAN > Static DHCP. The screen appears as shown.

The following table describes the labels in this screen.

Table 13 NETWORK > LAN > Static DHCP LABEL DESCRIPTION

# This is the index number of the Static IP table entry (row).

MAC Address Type the MAC address of a computer on your LAN.

IP Address Type the IP address that you want to assign to the computer on your LAN. Alternatively, click the right mouse button to copy and/or paste the IP address.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

IP alias allows you to partition a physical network into different logical networks over the same Ethernet interface.

The ZyXEL Device has a single LAN interface. Even though more than one of ports 1-4 may be in the LAN port role, they are all still part of a single physical Ethernet interface and all use the same IP address.

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The ZyXEL Device supports three logical LAN interfaces via its single physical LAN Ethernet interface. The ZyXEL Device itself is the gateway for each of the logical LAN networks.

When you use IP alias, you can also configure firewall rules to control access between the LAN'S logical networks (subnets).

Make sure that the subnets of the logical networks do not overlap.

The following figure shows a LAN divided into subnets A, B, and C.

Figure 67 Physical Network & Partitioned Logical Networks

A: 192.168.1.1 - 192.168.1.24

To change your ZyXEL Device’s IP alias settings, click NETWORK > LAN > IP Alias. The screen appears as shown.

The following table describes the labels in this screen. Table 14 NETWORK > LAN > IP Alias

LABEL DESCRIPTION Enable IP Alias 1, | Select the check box to configure another LAN network for the ZyXEL Device. 2

IP Address Enter the IP address of your ZyXEL Device in dotted decimal notation. Alternatively, click the right mouse button to copy and/or paste the IP address.

IP Subnet Mask Your ZyXEL Device will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the ZyXEL Device.

RIP Direction RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets. Select the RIP direction from Both/in Only/Out Only/None. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received.

RIP Version The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, RIP direction is set to Both and the Version set to RIP-1.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

Use the Port Roles screen to set ports as part of the LAN or DMZ interface. Ports 1-4 on the ZyXEL Device can be part of the LAN or DMZ interface.

Do the following if you are configuring from a computer connected to a LAN or DMZ port and changing the port's role:

1 A port's IP address varies as its role changes, make sure your computer's IP address is i the same subnet as the ZyXEL Device's LAN or DMZ IP address.

2 Use the appropriate LAN or DMZ IP address to access the ZyXEL Device.

To change your ZyXEL Device’s port role settings, click NETWORK > LAN > Port Roles. The screen appears as shown.

The radio buttons correspond to Ethernet ports on the front panel of the ZyXEL Device. On the ZyXEL Device, ports 1 to 4 are all LAN ports by default.

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Your changes are also reflected in the DMZ Port Roles screen.

The following table describes the labels in this screen. Table 15 NETWORK > LAN > Port Roles

LABEL DESCRIPTION LAN Select a port's LAN radio button to use the port as part of the LAN. The port will use the ZyXEL Device's LAN IP address and MAC address.

DMZ Select a ports DMZ radio button to use the port as part of the DMZ. The port will use the ZyXEL Device's DMZ IP address and MAC address.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

After you change the LAN or DMZ port roles and click Apply, please wait for few seconds until the following screen appears. Click Return to go back to the Port Roles screen.

Figure 70 Port Roles Change Complete

Port Role Hardware Reconfiguration Complete

Please click on Return to go to the Port Rales screen.

This chapter describes how to configure WAN settings.

paf WAN 2 refers to the 3G card on the supported ZyXEL Device.

Use the WAN General screen to configure operation mode, route priority and connection test for the ZyXEL Device.

Use the WAN 1 screen to configure the WANI interface for Internet access on the ZyXEL Device.

Use the 3G (WAN 2) screen to configure the WAN2 interface for Internet access on the ZyXEL Device.

Use the Traffic Redirect screen to configure an alternative gateway.

6.2 Multiple WAN You can use a second connection as a backup to enhance network reliability.

The ZyXEL Device has two WAN ports. You can optionally activate the internal 3G card to use the second 3G WAN interface. You can connect one interface to one ISP (or network) and connect the other to a second ISP (or network).

The ZyXEL Device's NAT feature allows you to configure sets of rules for one WAN interface and separate sets of rules for the other WAN interface. Refer to Chapter 12 on page 225 for details.

You can select through which WAN interface you want to send out traffic from UPnP-enabled applications (see Chapter 16 on page 281).

The ZyXEL Device's DDNS lets you select which WAN interface you want to use for each individual domain name. The DDNS high availability feature lets you have the ZyXEL Device use the other WAN interface for a domain name if the configured WAN interface's connection goes down. See Section 14.10.2 on page 256 for details.

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6.3 TCP/IP Priority (Metric)

The metric represents the "cost of transmission". A router determines the best route for transmission by choosing a path with the lowest "cost". RIP routing uses hop count as the measurement of cost, with a minimum of "1" for directly connected networks. The number must be between "1" and "15"; a number greater than "15" means the link is down. The smaller the number, the lower the "cost".

1 The metric sets the priority for the ZyXEL Device's routes to the Internet. Each route must have a unique metric.

2 The priorities of the WAN interface routes must always be higher than the traffic redirect route priorities.

Lets say that you have the WAN operation mode set to active/passive, meaning the ZyXEL Device use the second highest priority WAN interface as a back up. The WAN 1 route has a metric of "2", the WAN 2 route has a metric of "3", and the traffic-redirect route has a metric of "14". In this case, the WAN 1 route acts as the primary default route. If the WAN 1 route fails to connect to the Internet, the ZyXEL Device tries the WAN 2 route next. If the WAN 2 route fails, the ZyXEL Device tries the traffic-redirect route.

The traffic redirect route cannot take priority over the WAN 1 and WAN 2 routes.

Click NETWORK > WAN to open the General screen. Use this screen to configure operation mode, route priority and connection test.

Æ WAN 2 refers to the 3G card on the supported ZyXEL Device.

WAN Traffic Redirect

The following table describes the labels in this screen. Table 16 NETWORK > WAN General

LABEL DESCRIPTION Active/Passive (Fail Over) Mode

The ZyXEL Device uses the second highest priority WAN interface as a back up. This means that the ZyXEL Device will normally use the highest priority (primary) WAN interface (depending on the priorities you configure in the Route Priority fields). The ZyXEL Device will switch to the secondary (second highest priority) WAN interface when the primary WAN interface's connection fails.

Fall Back to Primary WAN When Possible

This field determines the action the ZyXEL Device takes after the primary WAN interface fails and the ZyXEL Device starts using the secondary WAN interface. Select this check box to have the ZyXEL Device change back to using the primary WAN interface when the ZyXEL Device can connect through the primary WAN interface again.

Clear this check box to have the ZyXEL Device continue using the secondary WAN interface, even after the ZyXEL Device can connect through the primary WAN interface again. The ZyXEL Device continues to use the secondary WAN interface until it's connection fails (at which time it will change back to using the primary WAN interface if its connection is up.

WAN1 WAN2 Traffic Redirect

The default WAN connection is “1” as your broadband connection via the WAN interface should always be your preferred method of accessing the WAN. The ZyXEL Device switches from WAN interface 1 to WAN interface 2 if WAN interface 1's connection fails and then back to WAN interface 1 when WAN interface 1's connection comes back up. The default priority of the routes is WAN 1, WAN 2 and then Traffic Redirect:

You have two choices for an auxiliary connection (WAN 2 and Traffic Redirect) in the event that your regular WAN connection goes down.

Check Period The ZyXEL Device tests a WAN connection by periodically sending a ping to either the default gateway or the address in the Ping this Address field.

Type a number of seconds (5 to 300) to set the time interval between checks. Allow more time if your destination IP address handles lots of traffic.

Check Timeout Type the number of seconds (1 to 10) for your ZyXEL Device to wait for a response to the ping before considering the check to have failed. This setting must be less than the Check Period. Use a higher value in this field if your network is busy or congested.

Check Fail Type how many WAN connection checks can fail (1-10) before the connection is

Tolerance considered "down" (not connected). The ZyXEL Device still checks a "down" connection to detect if it reconnects.

Check WAN1/2 Select the check box to have the ZyXEL Device periodically test the respective

Connectivity WAN interface's connection.

Select Ping Default Gateway to have the ZyXEL Device ping the WAN interface's default gateway IP address.

Select Ping this Address and enter a domain name or IP address of a reliable nearby computer (for example, your ISP's DNS server address) to have the ZyXEL Device ping that address. For a domain name, use up to 63 alphanumeric characters (hyphens, periods and the underscore are also allowed) without spaces.

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Table 16 NETWORK > WAN General (continued)

LABEL DESCRIPTION Check Traffic Select the check box to have the ZyXEL Device periodically test the traffic redirect

Redirection connection.

Connectivity Select Ping Default Gateway to have the ZyXEL Device ping the backup gateway's IP address. Select Ping this Address and enter a domain name or IP address of a reliable nearby computer (for example, your ISP's DNS server address) to have the ZyXEL Device ping that address. For a domain name, use up to 63 alphanumeric characters (hyphens, periods and the underscore are also allowed) without spaces.

Windows NetBlOS (Network Basic Input/Output System) are TCP or UDP packets that

Networking enable a computer to connect to and communicate with a LAN. For some dial-up

(NetBlOS over services such as PPPOE or PPTP, NetBlOS packets cause unwanted calls.

WAN1 and LAN Select this check box to forward NetBlOS packets from WAN 1 to the LAN port and from the LAN port to WAN1. If your firewall is enabled with the default policy set to block WAN 1 to LAN traffic, you also need to enable the default WAN1 to LAN firewall rule that forwards NetBIOS traffic.

Clear this check box to block all NetBlOS packets going from WAN 1 to the LAN port and from LAN port to WAN1.

WAN1 and DMZ Select this check box to forward NetBIOS packets from WAN 1 to the DMZ port and from the DMZ port to WAN1.

Clear this check box to block all NetBIlOS packets going from WAN 1 to the DMZ port and from DMZ port to WAN1.

WAN2 and LAN Select this check box to forward NetBlOS packets from WAN 2 to the LAN port and from the LAN port to WAN2. If your firewall is enabled with the default policy set to block WAN 2 to LAN traffic, you also need to enable the default WAN2 to LAN firewall rule that forwards NetBIOS traffic.

Clear this check box to block all NetBlOS packets going from WAN 2 to the LAN port and from LAN port to WAN2.

WAN2 and DMZ Select this check box to forward NetBIOS packets from WAN 2 to the DMZ port and from the DMZ port to WAN2.

Clear this check box to block all NetBIlOS packets going from WAN 2 to the DMZ port and from DMZ port to WAN2.

Select this option to allow NetBlOS packets to initiate calls.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

6.5 WAN IP Address Assignment

Every computer on the Internet must have a unique IP address. If your networks are isolated

from the Internet, for instance, only between your two branch offices, you can 4

addresses to the hosts without problems. However, the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of IP addresses specifically for private

Table 17 Private IP Address Ranges

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You can obtain your IP address from the IANA, from an ISP or have it assigned by a private network. If you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addresses.

Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space.

6.6 DNS Server Address Assignment

Use DNS (Domain Name System) to map a domain name to its corresponding IP address and vice versa, for instance, the IP address of www.zyxel.com is 204.217.0.2. The DNS server is extremely important because without it, you must know the IP address of a computer before you can access it.

The ZyXEL Device can get the DNS server addresses in the following ways.

1 TheISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.

2 If your ISP dynamically assigns the DNS server IP addresses (along with the ZyXEL Device’s WAN IP address), set the DNS server fields to get the DNS server address from the ISP.

3 You can manually enter the IP addresses of other DNS servers. These servers can be public or private. A DNS server could even be behind a remote IPSec router (see Section 14.5.1 on page 248).

Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02.

You can configure the WAN port's MAC address by either using the factory default or cloning the MAC address from a computer on your LAN. Once it is successfully configured, the address will be copied to the "rom" file (ZyNOS configuration file). It will not change unless you change the setting or upload a different "rom" file.

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Use this screen to change your ZyXEL Device's WAN 1 ISP, IP and MAC settings. Click NETWORK > WAN > WAN 1 to display this screen. The screen differs by the encapsulation.

EE The WAN 1 and WAN 2 IP addresses of a ZyXEL Device with multiple WAN interfaces must be on different subnets.

6.8.1 WAN Ethernet Encapsulation

For ISPs (such as Telstra) that send UDP heartbeat packets to verify that the customer is still online, please create a WAN-to-WAN/ZyXEL Device firewall rule for those packets. Contact your ISP to find the correct port number.

The screen shown next is for Ethernet encapsulation.

Figure 72 NETWORK > WAN > WAN 1 (Ethernet Encapsulation) WAN

1SP Parameters for Internet Access

WAN IP Address Assignment

You must choose the Ethernet option when the WAN port is used as a regular Ethernet.

Service Type Choose from Standard, Telstra (RoadRunner Telstra authentication method), RR- Manager (Roadrunner Manager authentication method), RR-Toshiba (Roadrunner Toshiba authentication method) or Telia Login. The following fields do not appear with the Standard service type. User Name Type the user name given to you by your ISP. Password Type the password associated with the user name above. Retype to Type your password again to make sure that you have entered is correctly. Confirm Login Server IP Type the authentication server IP address here if your ISP gave you one. Address This field is not available for Telia Login. Login Server Type the domain name of the Telia login server, for example login1.telia.com. (Telia Login only) Relogin The Telia server logs the ZyXEL Device out if the ZyXEL Device does not log in

Every(min) periodically. Type the number of minutes from 1 to 59 (30 default) for the ZyXEL Device to wait between logins.

Get automatically | Select this option lf your ISP did not assign you a fixed IP address. This is the from ISP default selection.

Use Fixed IP Select this option If the ISP assigned a fixed IP address.

My WAN IP Enter your WAN IP address in this field if you selected Use Fixed IP Address. Address

My WAN IP Enter the IP subnet mask (if your ISP gave you one) in this field if you selected Use Subnet Mask Fixed IP Address.

Gateway IP Enter the gateway IP address (if your ISP gave you one) in this field if you selected Address Use Fixed IP Address.

Enable NAT (Network Address Translation)

Network Address Translation (NAT) allows the translation of an Internet protocol address used within one network (for example a private IP address used in a local network) to a different IP address known within another network (for example a public IP address used on the Internet).

Select this check box to enable NAT.

Table 18 NETWORK > WAN > WAN 1 (Ethernet Encapsulation) (continued)

LABEL DESCRIPTION RIP Direction RIP (Routing Information Protocol) allows a router to exchange routing information With other routers. The RIP Direction field controls the sending and receiving of RIP packets.

Choose Both, None, In Only or Out Only.

When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically.

When set to Both or In Only, the ZyXEL Device will incorporate RIP information that it receives.

When set to None, the ZyXEL Device will not send any RIP packets and will ignore any RIP packets received.

By default, RIP Direction is set to Both.

RIP Version The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving).

Choose RIP-1, RIP-2B or RIP-2M.

RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, the RIP Version field is set to RIP-1.

Enable Multicast | Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data.

Multicast Version | Choose None (default), IGMP-V1 or IGMP-V2. IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to establish membership in a Multicast group — it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

Spoof WAN MAC | You can configure the WAN ports MAC address by either using the factory Address from assigned default MAC Address or cloning the MAC address of a computer on your LAN LAN. By default, the ZyXEL Device uses the factory assigned MAC Address to identify itself on the WAN.

Otherwise, select the check box next to Spoof WAN MAC Address from LAN and enter the IP address of the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file.

Clone the Enter the IP address of the computer on the LAN whose MAC you are cloning. computer's MAC | if you clone the MAC address of a computer on your LAN, it is recommended that address — IP you clone the MAC address prior to hooking up the WAN port.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

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The ZyXEL Device supports PPPOE (Point-to-Point Protocol over Ethernet). PPPOE is an IETF standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem (DSL, cable, wireless, etc.) connection. The PPPOE option is for a dial-up connection using PPPOE.

For the service provider, PPPOE offers an access and authentication method that works with existing access control systems (for example RADIUS).

One of the benefits of PPPOE is the ability to let you access one of multiple network services, a function known as dynamic service selection. This enables the service provider to easily create and offer new IP services for individuals.

Operationally, PPPOE saves significant effort for both you and the ISP or carrier, as it requires no specific configuration of the broadband modem at the customer site.

By implementing PPPOE directly on the ZyXEL Device (rather than individual computers), the computers on the LAN do not need PPPOE software installed, since the ZyXEL Device does that part of the task. Furthermore, with NAT, all of the LANS’ computers will have access.

The screen shown next is for PPPOE encapsulation.

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The following table describes the labels in this screen. Table 19 NETWORK > WAN > WAN 1 (PPPOE Encapsulation)

LABEL DESCRIPTION ISP Parameters for Internet Access

Encapsulation Select PPPOE for a dial-up connection using PPPOE.

Service Name Type the PPPOE service name provided to you by your ISP. PPPOE uses a service name to identify and reach the PPPOE server.

User Name Type the user name given to you by your ISP.

Password Type the password associated with the user name above.

Retype to Type your password again to make sure that you have entered is correctly. Confirm

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Table 19 NETWORK > WAN > WAN 1 (PPPOE Encapsulation) (continued)

LABEL DESCRIPTION Authentication The ZyXEL Device supports PAP (Password Authentication Protocol) and CHAP Type (Challenge Handshake Authentication Protocol). CHAP is more secure than PAP; however, PAP is readily available on more platforms. Use the drop-down list box to select an authentication protocol for outgoing calls. Options are: CHAP/PAP - Your ZyXEL Device accepts either CHAP or PAP when requested by this remote node. CHAP - Your ZyXEL Device accepts CHAP only. PAP - Your ZyXEL Device accepts PAP only. Nailed-Up Select Naïiled-Up if you do not want the connection to time out. Idle Timeout This value specifies the time in seconds that elapses before the ZyXEL Device

automatically disconnects from the PPPOE server.

Get Select this option If your ISP did not assign you a fixed IP address. This is the automatically default selection.

from ISP Use Fixed IP Select this option If the ISP assigned a fixed IP address.

My WAN IP Enter your WAN IP address in this field if you selected Use Fixed IP Address. Address

Enable NAT (Network Address Translation)

Network Address Translation (NAT) allows the translation of an Internet protocol address used within one network (for example a private IP address used in a local network) to a different IP address known within another network (for example a public IP address used on the Internet).

Select this checkbox to enable NAT.

For more information about NAT see Chapter 12 on page 225.

RIP Direction RIP (Routing Information Protocol) allows a router to exchange routing information With other routers. The RIP Direction field controls the sending and receiving of RIP packets. Choose Both, None, In Only or Out Only. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, the ZyXEL Device will incorporate RIP information that it receives. When set to None, the ZyXEL Device will not send any RIP packets and will ignore any RIP packets received. By default, RIP Direction is set to Both.

RIP Version The RIP Version field controls the format and the broadcasting method of the RIP

packets that the ZyXEL Device sends (it recognizes both formats when receiving). Choose RIP-1, RIP-2B or RIP-2M.

RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sendbs the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, the RIP Version field is set to RIP-1.

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Table 19 NETWORK > WAN > WAN 1 (PPPOE Encapsulation) (continued)

LABEL DESCRIPTION Enable Multicast | Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data.

Multicast Version | Choose None (default), IGMP-V1 or IGMP-V2. IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to establish membership in a Multicast group — it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

Spoof WAN MAC | You can configure the WAN ports MAC address by either using the factory Address from assigned default MAC Address or cloning the MAC address of a computer on your LAN LAN. By default, the ZyXEL Device uses the factory assigned MAC Address to identify itself on the WAN.

Otherwise, select the check box next to Spoof WAN MAC Address from LAN and enter the IP address of the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file.

Clone the Enter the IP address of the computer on the LAN whose MAC you are cloning. computer's MAC | If you clone the MAC address of a computer on your LAN, it is recommended that address — IP you clone the MAC address prior to hooking up the WAN port.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

6.8.3 PPTP Encapsulation

Point-to-Point Tunneling Protocol (PPTP) is a network protocol that enables secure transfer of data from a remote client to a private server, creating a Virtual Private Network (VPN) using TCP/IP-based networks.

PPTP supports on-demand, multi-protocol and virtual private networking over public networks, such as the Internet. The screen shown next is for PPTP encapsulation.

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The following table describes the labels in this screen. Table 20 NETWORK > WAN > WAN 1 (PPTP Encapsulation)

LABEL DESCRIPTION ISP Parameters for Internet Access

Set the encapsulation method to PPTP. The ZyXEL Device supports only one PPTP server connection at any given time. To configure a PPTP client, you must configure the User Name and Password fields for a PPP connection and the PPTP parameters for a PPTP connection.

User Name Type the user name given to you by your ISP. Password Type the password associated with the user name above. Retype to Confirm | Type your password again to make sure that you have entered it correctly.

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Table 20 NETWORK > WAN > WAN 1 (PPTP Encapsulation) (continued)

LABEL DESCRIPTION Authentication The ZyXEL Device supports PAP (Password Authentication Protocol) and CHAP Type (Challenge Handshake Authentication Protocol). CHAP is more secure than PAP;

however, PAP is readily available on more platforms.

Use the drop-down list box to select an authentication protocol for outgoing calls. Options are:

CHAP/PAP - Your ZyXEL Device accepts either CHAP or PAP when requested by this remote node.

CHAP - Your ZyXEL Device accepts CHAP only.

PAP - Your ZyXEL Device accepts PAP only.

Nailed-up Select Nailed-Up if you do not want the connection to time out.

Idle Timeout This value specifies the time in seconds that elapses before the ZyXEL Device automatically disconnects from the PPTP server.

My IP Address Type the (static) IP address assigned to you by your ISP.

My IP Subnet Your ZyXEL Device will automatically calculate the subnet mask based on the IP Mask address that you assign. Unless you are implementing subnetting, use the subnet

mask computed by the ZyXEL Device. Server IP Address | Type the IP address of the PPTP server.

Connection ID/ Type your identification name for the PPTP server.

Get automatically | Select this option If your ISP did not assign you a fixed IP address. This is the from ISP default selection.

Use Fixed IP Select this option If the ISP assigned a fixed IP address.

My WAN IP Enter your WAN IP address in this field if you selected Use Fixed IP Address. Address

Enable NAT Network Address Translation (NAT) allows the translation of an Internet protocol (Network Address | address used within one network (for example a private IP address used in a local Translation) network) to a different IP address known within another network (for example a

public IP address used on the Internet). Select this checkbox to enable NAT. For more information about NAT see Chapter 12 on page 225.

RIP Direction RIP (Routing Information Protocol) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets.

Choose Both, None, In Only or Out Only.

When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically.

When set to Both or In Only, the ZyXEL Device will incorporate RIP information that it receives.

When set to None, the ZyXEL Device will not send any RIP packets and will ignore any RIP packets received.

By default, RIP Direction is set to Both.

NBG410W3G Series Users Guide 125

The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving).

Choose RIP-1, RIP-2B or RIP-2M.

RIP-1 is universally supported; but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, the RIP Version field is set to RIP-1.

Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data.

Choose None (default), IGMP-V1 or IGMP-V2. IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

Spoof WAN MAC Address from LAN You can configure the WAN ports MAC address by either using the factory assigned default MAC Address or cloning the MAC address of a computer on your LAN. By default, the ZyXEL Device uses the factory assigned MAC Address to identify itself on the WAN.

Otherwise, select the check box next to Spoof WAN MAC Address from LAN and enter the IP address of the computer on the LAN whose MAC you are cloning. Once it is successfully configured, the address will be copied to the rom file (ZyNOS configuration file). It will not change unless you change the setting or upload a different ROM file.

Clone the Enter the IP address of the computer on the LAN whose MAC you are cloning. computer's MAC | if you clone the MAC address of a computer on your LAN, it is recommended that address — IP you clone the MAC address prior to hooking up the WAN port.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

3G (Third Generation) is a digital, packet-switched wireless technology. Bandwidth usage is optimized as multiple users share the same channel and bandwidth is only allocated to users when they send data. It allows fast transfer of voice and non-voice data and provides broadband Internet access to mobile devices.

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Chapter 6 WAN Screens

The actual data rate you obtain varies depending on your 3G card, the signal

strength of the service provider’s base station, your service plan, etc.

For NBG410W3G, you can use either the built-in 3G module or an external USB dongle to establish a 3G connection. Both connections cannot work simultaneously.

If the signal strength of a 3G network is too low, the 3G card may switch to an available 2.5G or 2.75G network. See the following table for a comparison between 2G, 2.5G, 2.75G, 3G and 3.5G wireless technologies.

Table 21 2G, 2.56, 2.75G, 3G and 3.5G Wireless Technologies

MOBILE PHONE AND DATA STANDARDS DATA NAME |TYPE SPEED GSM-BASED CDMA-BASED 2G Circuit- GSM (Global System for Mobile Interim Standard 95 (IS-95), the first Slow switched Communications), Personal Handy- CDMA-based digital cellular standard phone System (PHS), etc. pioneered by Qualcomm. The brand À name for 1S-95 is cdmaOne. IS-95 is also known as TIA-EIA-95. 2.5G Packet- GPRS (General Packet Radio CDMA2000 is a hybrid 2.5G / 3G switched Services), High-Speed Circuit- protocol of mobile telecommunications Switched Data (HSCSD), etc. standards that use CDMA, a multiple access scheme for digital radio. 2.75G |Packet- Enhanced Data rates for GSM : switched | Evolution (EDGE), Enhanced GPRS | CDMA2000 1xRTT (1 times Radio (EGPRS), etc. Transmission Technology) is the core CDMA2000 wireless air interface standard. It is also known as 1x, 1xRTT, or 1S-2000 and considered to be a 2.5G or 2.75G technology. 3G Packet- UMTS (Universal Mobile CDMA2000 EV-DO (Evolution-Data switched Telecommunications System), a third- | Optimized, originally 1x Evolution-Data generation (3G) wireless standard Only), also referred to as EV-DO, EVDO, defined in ITUA specification, is or just EV, is an evolution of CDMA2000 sometimes marketed as 3GSM. The 1xRTT and enables high-speed wireless UMTS uses GSM infrastructures and | connectivity. lt is also denoted as IS-856 W-CDMA (Wideband Code Division or High Data Rate (HDR). Multiple Access) as the air interface. 3.5G Packet- HSDPA (High-Speed Downlink Packet switched Access) is a mobile telephony protocol, used for UMTS-based 3G \Y networks and allows for higher data transfer speeds. Fast

A. The International Telecommunication Union (ITU) is an international organization within which governments and the private sector coordinate global telecom networks and services.

After you activate 3G on your ZyXEL Device, the 3G connection becomes WAN 2. Refer to the Chapter 22 on page 345 for the type of 3G cards that you can use in the ZyXEL Device along with the corresponding supported features.

NBG410W36G Series User's Guide

To change your ZyXEL Device's 3G WAN settings, click NETWORK > WAN > 3G (WAN

2) or WIRELESS > 3G (WAN 2).

The WAN 1 and WAN 2 IP addresses of a ZyXEL Device with multiple WAN

interfaces must be on different subnets.

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Chapter 6 WAN Screens

WAN General Traffic Redirect

3G Card Configuration

L WAN IP Address Assignment (ON (oh

The following table describes the labels in this screen. Table 22 NETWORK > WAN > 3G (WAN 2)

LABEL DESCRIPTION WAN2 Setup

Select this option to enable WAN 2. The Network Type and Network Selection fields appear.

3G Card Configuration

This displays the model of the 3G card installed in your ZyXEL Device. This may be installed internally or on the device's USB port.

Select the type of 3G service and frequency band for your 3G connection. If you are unsure what to select, check with your 3G service provider to find the 3G service available to you in your region.

Select Automatically (All bands) to have the card connect to the highest speed network available. Once connected the ZyXEL Device will continue searching for and connecting to the highest speed network as it becomes available.

Select UMTS/HSDPA only (WCDMA 2100) to access HSDPA or UMTS networks available at 2100 Mhz in your region. At the time of writing, Europe and Asia offer UMTS or HSDPA using WCDMA 2100.

Select GPRS/EDGE (GSM 900/1800) only to access GPRS or EDGE networks available at 900 or 1800 Mhz in your region. At the time of writing, Europe and most of Asia offer GPRS or EDGE using GSM 900/1800. GSM 1800 may also be known as DCS in some countries.

Select GSM all to access GPRS or EDGE networks in other GSM frequency bands in other regions.

Select WCDMA all to access UMTS or HSDPA networks in other WCDMA frequency bands in other regions.

See Table 21 on page 127 for more information.

Select a 3G service provider for your connection. Otherwise, select Automatically to have the ZyXEL Device use the default settings on the 3G SIM card and connect to your service provider's base station.

This shows Automatically by default. Click Scan to have the ZyXEL Device search for and display the available service providers. Ensure you have disconnected your 3G connection as the ZyXEL Device cannot scan for available 3G service providers while it has a 3G connection.

This field resets to the default setting (Automatically) if the ZyXEL Device restarts.

ISP Parameters for Internet

Access Point Select this option and enter the APN (Access Point Name) if your ISP gives you the

Name (APN) APN only. Connections with different APNs may provide different services (such as Internet access or MMS (Multi-Media Messaging Service)) and charge methods. You can enter up to 31 ASCII printable characters. Spaces are allowed.

Initial String Select this option and enter the initial string and APN if you know how to configure

(containing APN) | or your ISP provides a string, which would include the APN, to initialize the 3G

card. You can enter up to 72 ASCII printable characters. Spaces are allowed.

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Chapter 6 WAN Screens

Table 22 NETWORK > WAN > 3G (WAN 2) (continued)

LABEL DESCRIPTION Authentication The ZyXEL Device supports PAP (Password Authentication Protocol) and CHAP Type (Challenge Handshake Authentication Protocol). CHAP is more secure than PAP;

however, PAP is readily available on more platforms.

Use the drop-down list box to select an authentication protocol for outgoing calls. Options are:

CHAP/PAP - Your ZyXEL Device accepts either CHAP or PAP when requested by the ISP.

CHAP - Your ZyXEL Device accepts CHAP only.

PAP - Your ZyXEL Device accepts PAP only.

None - Your ZyXEL Device does not send your user name and password for authentication. The user name and password fields are grayed out. Select this option if your ISP did not give you a user name and password.

User Name Type the user name (of up to 31 ASCII printable characters) given to you by your service provider.

Password Type the password (of up to 31 ASCII printable characters) associated with the user name above.

Retype to Type your password again to make sure that you have entered is correctly.

PIN Code A PIN (Personal Identification Number) code is a key to a 3G card. Without the PIN

code, you cannot use the 3G card.

Enter the PIN code (four to eight digits, 0000 for example) provided by your ISP. If you enter the PIN code incorrectly, the 3G card may be blocked by your ISP and you cannot use the account to access the Internet.

If your ISP disabled PIN code authentication, enter an arbitrary number. This field is available only when you insert a GSM 36G card. Check the HOME screen to see if you have entered the correct PIN.

Phone Number Enter the phone number (dial string) used to dial up a connection to your service provider's base station. Your ISP should provide the dial string.

By default, *99# is the dial string for GSM-based networks and #777 is the dial string for CDMA-based networks.

Nailed-Up Select Naïled-Up if you do not want the connection to time out.

Idle Timeout This specifies the time (from 0 to 9999) in seconds that elapses before the ZyXEL Device automatically disconnects from the ISP.

Get automatically | Select this option if your ISP did not assign you a fixed IP address. This is the from ISP default selection.

Use Fixed IP Select this option if the ISP assigned a fixed IP address.

My WAN IP Enter your WAN IP address in this field if you selected Use Fixed IP Address. Address

Enable NAT Network Address Translation (NAT) allows the translation of an Internet protocol (Network address used within one network (for example a private IP address used in a local Address network) to a different IP address known within another network (for example a Translation) public IP address used on the Internet).

Select this checkbox to enable NAT. For more information about NAT see Chapter 12 on page 225.

NBG410W3G Series Users Guide 131

Select this check box to turn on IGMP (Internet Group Multicast Protocol). IGMP is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data.

Choose None (default), IGMP-V1 or IGMP-V2. IGMP (Internet Group Multicast Protocol) is a session-layer protocol used to establish membership in a Multicast group — it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

Enable Budget Control

Select this check box to set a monthly limit for the user account of the installed 3G card. You must insert a 3G card before you enable budget control on the ZyXEL Device.

You can set a limit on the total traffic and/or call time. The ZyXEL Device takes the actions you specified when a limit is exceeded during the month.

Time Budget Select this check box and specify the amount of time (in hours) that the 3G connection can be used within one month. If you change the value after you configure and enable budget control, the ZyXEL Device resets the statistics.

Data Budget Select this check box and specify how much downstream and/or upstream data (in

Mbytes) can be transmitted via the 3G connection within one month.

Select Download to set a limit on the downstream traffic (from the ISP to the ZyXEL Device).

ES Upload to set a limit on the upstream traffic (from the ZyXEL Device to the Select Download/Upload to set a limit on the total traffic in both directions.

If you change the value after you configure and enable budget control, the ZyXEL Device resets the statistics.

Reset time and data budget counters on

Select the date on which the ZyXEL Device resets the budget every month. If the date you selected is not available in a month, such as 30th or 31th, the ZyXEL Device resets the budget on the last day of the month.

Reset time and data budget counters

This button is available only when you enable budget control in this screen.

Click this button to reset the time and data budgets immediately. The count starts over with the 3G connection's full configured monthly time and data budgets. This does not affect the normal monthly budget restart.

Actions when over budget

Specify the actions the ZyXEL Device takes when the time or data limit is exceeded.

Select Log to create a log.

Select Alert to create an alert. This option is available only when you select Log. If you select Log, you can also select recurring every to have the ZyXEL Device send a log (and alert if selected) for this event periodically. Specify how often (from 1 to 65535 minutes) to send the log (and alert if selected).

Select Allow to permit new 3G connections or Disallow to drop/block new 3G connections.

Select Keep to maintain the existing 3G connection or Drop to disconnect it.

You cannot select Allow and Drop at the same time.

If you select Disallow and Keep, the ZyXEL Device allows you to transmit data using the current connection, but you cannot build a new connection if the existing connection is disconnected.

Table 22 NETWORK > WAN > 3G (WAN 2) (continued)

LABEL DESCRIPTION Actions when Specify the actions the ZyXEL Device takes when the specified percentage of time over % of time budget or data limit is exceeded. Enter a number from 1 to 99 in the percentage budget or % of fields. If you change the value after you configure and enable budget control, the data budget ZyXEL Device resets the statistics.

Select Log to create a log.

Select Alert to create an alert. This option is available only when you select Log.

If you select Log, you can also select recurring every to have the ZyXEL Device send a log (and alert if selected) for this event periodically. Specify how often (from 1 to 65535 minutes) to send the log (and alert if selected).

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

6.10 Traffic Redirect

Traffic redirect forwards WAN traffic to a backup gateway when the ZyXEL Device cannot connect to the Internet through its normal gateway. Connect the backup gateway on the WAN so that the ZyXEL Device still provides firewall protection for the LAN.

Figure 76 Traffic Redirect WAN Setup

IP alias allows you to avoid triangle route security issues when the backup gateway is connected to the LAN or DMZ. Use IP alias to configure the LAN into two or three logical networks with the ZyXEL Device itself as the gateway for each LAN network. Put the protected LAN in one subnet (Subnet 1 in the following figure) and the backup gateway in another subnet (Subnet 2). Configure a LAN to LAN/ZyXEL Device firewall rule that forwards packets from the protected LAN (Subnet 1) to the backup gateway (Subnet 2).

Figure 77 Traffic Redirect LAN Setup

NBG410W3G Series Users Guide 133

6.11 Configuring Traffic Redirect

To change your ZyXEL Device’s traffic redirect settings, click NETWORK > WAN > Traffic Redirect. The screen appears as shown.

Figure 78 NETWORK > WAN > Traffic Redirect

General WAN 1 36 (WAN 2) __[Nrraffie

T Active Backup Gateway IP Address 0 0 0 . 0

The following table describes the labels in this screen. Table 23 NETWORK > WAN > Traffic Redirect

LABEL DESCRIPTION Active Select this check box to have the ZyXEL Device use traffic redirect if the normal WAN connection goes down.

Backup Type the IP address of your backup gateway in dotted decimal notation. The ZyXEL Gateway IP Device automatically forwards traffic to this IP address if the ZyXEL Device's Internet Address connection terminates.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

NBG410W36G Series Users Guide

This chapter describes how to configure the ZyXEL Device’s DMZ.

7.1 DMZ The DeMilitarized Zone (DMZ) provides a way for public servers (Web, e-mail, FTP, etc.) to be visible to the outside world (while still being protected from DoS (Denial of Service) attacks such as SYN flooding and Ping of Death). These public servers can also still be accessed from the secure LAN.

By default the firewall allows traffic between the WAN and the DMZ, traffic from the DMZ to the LAN is denied, and traffic from the LAN to the DMZ is allowed. Internet users can have access to host servers on the DMZ but no access to the LAN, unless special filter rules allowing access were configured by the administrator or the user is an authorized remote user.

It is highly recommended that you connect all of your public servers to the DMZ port(s).

It is also highly recommended that you keep all sensitive information off of the public servers connected to the DMZ port. Store sensitive information on LAN computers.

7.2 Configuring DMZ The DMZ and the connected computers can have private or public IP addresses.

When the DMZ uses public IP addresses, the WAN and DMZ ports must use public IP addresses that are on separate subnets. See Appendix C on page 377 for information on IP subnetting. If you do not configure SUA NAT or any full feature NAT mapping rules for the public IP addresses on the DMZ, the ZyXEL Device will route traffic to the public IP addresses on the DMZ without performing NAT. This may be useful for hosting servers for NAT unfriendly applications (see Chapter 12 on page 225 for more information).

Ifthe DMZ computers use private IP addresses, use NAT if you want to make them publicly accessible.

Like the LAN, the ZyXEL Device can also assign TCP/IP configuration via DHCP to computers connected to the DMZ ports.

From the main menu, click NETWORK > DMZ to open the DMZ screen. The screen appears as shown next.

NBG410W3G Series Users Guide 135

1P Address 9 . 0 RiPDirection [Bon 1P Subnet Mask 0 . 0. RIP Version Fr+ >] Multicast [ne | DHCP Setup OO | DHCP [none |] 1P Pool Starting Address ) . 0 0 Pool Size FE | DHCP Server Address ù . 0 . 0 . 0 DHCP WINS Server 1 ù . 0 0 DHCP WINS Server 2 ù . 0 . 0 . ©

Windows Networking (NetB10S over TCP/IP.

F allow between DMZ and LAN 1 Allow between DMZ and WANL 1 Allow between DMZ and WAN2

The following table describes the labels in this screen.

Table 24 NETWORK > DMZ LABEL DESCRIPTION DMZ TCP/IP IP Address Type the IP address of your ZyXEL Device's DMZ port in dotted decimal notation.

Note: Make sure the IP addresses of the LAN, WAN and DMZ are on separate subnets.

IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the

subnet mask computed by the ZyXEL Device 255.255.255.0.

RIP Direction RIP (Routing Information Protocol, RFC1058 and RFC 1389) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets. Select the RIP direction from Both/in Only/Out Only/None. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received. Both is the default.

RIP Version The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, RIP direction is set to Both and the Version set to RIP-1.

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Chapter 7 DMZ Screens

Table 24 NETWORK > DMZ (continued)

LABEL DESCRIPTION Multicast Select IGMP V-1 or IGMP V-2 or None. IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. If you would like to read more detailed information about interoperability between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236.

DHCP DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows

individual clients (workstations) to obtain TCP/IP configuration at startup from a server. Unless you are instructed by your ISP, leave this field set to Server. When configured as a server, the ZyXEL Device provides TCP/IP configuration for the clients. When set as a server, fill in the IP Pool Starting Address and Pool Size fields.

Select Relay to have the ZyXEL Device forward DHCP requests to another DHCP server. When set to Relay, fill in the DHCP Server Address field.

Select None to stop the ZyXEL Device from acting as a DHCP server. When you select None, you must have another DHCP server on your LAN, or else the computers must be manually configured.

This field specifies the first of the contiguous addresses in the IP address pool.

Pool Size This field specifies the size, or count of the IP address pool.

DHCP Server Type the IP address of the DHCP server to which you want the ZyXEL Device to

Address relay DHCP requests. Use dotted decimal notation. Alternatively, click the right mouse button to copy and/or paste the IP address.

DHCP WINS Type the IP address of the WINS (Windows Internet Naming Service) server that

Server 1, 2 you want to send to the DHCP clients. The WINS server keeps a mapping table of the computer names on your network and the IP addresses that they are currently using.

Allow between Select this check box to forward NetBlOS packets from the LAN to the DMZ and

DMZ and LAN from the DMZ to the LAN. If your firewall is enabled with the default policy set to

block DMZ to LAN traffic, you also need to configure a DMZ to LAN firewall rule that forwards NetBlOS traffic. Clear this check box to block all NetBlOS packets going from the LAN to the DMZ and from the DMZ to the LAN.

Allow between DMZ and WAN 1

Select this check box to forward NetBlOS packets from the DMZ to WAN 1 and from WAN 1 to the DMZ.

Clear this check box to block all NetBlOS packets going from the DMZ to WAN 1 and from WAN 1 to the DMZ.

Allow between DMZ and WAN 2

Select this check box to forward NetBlOS packets from the DMZ to WAN 2 and from WAN 2 to the DMZ.

Clear this check box to block all NetBlOS packets going from the DMZ to WAN 2 and from WAN 2 to the DMZ.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

This table allows you to assign IP addresses on the DMZ to specific individual computers based on their MAC Addresses.

Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02.

To change your ZyXEL Device’s static DHCP settings on the DMZ, click NETWORK > DMZ > Static DHCP. The screen appears as shown.

Figure 80 NETWORK > DMZ > Static DHCP DMZ

The following table describes the labels in this screen.

Table 25 NETWORK > DMZ > Static DHCP LABEL DESCRIPTION

# This is the index number of the Static IP table entry (row).

MAC Address Type the MAC address of a computer on your DMZ.

IP Address Type the IP address that you want to assign to the computer on your DMZ. Alternatively, click the right mouse button to copy and/or paste the IP address.

NBG410W36G Series Users Guide

IP alias allows you to partition a physical network into different logical networks over the same Ethernet interface.

The ZyXEL Device has a single DMZ interface. Even though more than one of ports 1-4 may be in the DMZ port role, they are all still part of a single physical Ethernet interface and all use the same IP address.

The ZyXEL Device supports three logical DMZ interfaces via its single physical DMZ Ethernet interface. The ZyXEL Device itself is the gateway for each of the logical DMZ networks.

The IP alias IP addresses can be either private or public regardless of whether the physical DMZ interface is set to use a private or public IP address. Use NAT if you want to make DMZ computers with private IP addresses publicly accessible (see Chapter 12 on page 225 for more information). When you use IP alias, you can have the DMZ use both public and private IP addresses at the same time.

paf Make sure that the subnets of the logical networks do not overlap.

To change your ZyXEL Device’s IP alias settings, click NETWORK > DMZ > IP Alias. The screen appears as shown.

NBG410W3G Series Users Guide 139

Table 26 NETWO The following table describes the labels in this screen.

LABEL DESCRIPTION Enable IP Alias 1, 2

Select the check box to configure another DMZ network for the ZyXEL Device.

Enter the IP address of your ZyXEL Device in dotted decimal notation.

Note: Make sure the IP addresses of the LAN, WAN and DMZ are on separate subnets.

Your ZyXEL Device will automatically calculate the subnet mask based on the IP address that you assign. Unless you are implementing subnetting, use the subnet mask computed by the ZyXEL Device.

RIP (Routing Information Protocol, RFC1058 and RFC 1389) allows a router to exchange routing information with other routers. The RIP Direction field controls the sending and receiving of RIP packets. Select the RIP direction from Both/in Only/Out Only/None. When set to Both or Out Only, the ZyXEL Device will broadcast its routing table periodically. When set to Both or In Only, it will incorporate the RIP information that it receives; when set to None, it will not send any RIP packets and will ignore any RIP packets received.

The RIP Version field controls the format and the broadcasting method of the RIP packets that the ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have an unusual network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B uses subnet broadcasting while RIP-2M uses multicasting. Multicasting can reduce the load on non-router machines since they generally do not listen to the RIP multicast address and so will not receive the RIP packets. However, if one router uses multicasting, then all routers on your network must use multicasting, also. By default, RIP direction is set to Both and the Version set to RIP-1.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

NBG410W36G Series Users Guide

Chapter 7 DMZ Screens

7.5 DMZ Public IP Address Example

The following figure shows a simple network setup with public IP addresses on the WAN and DMZ and private IP addresses on the LAN. Lower case letters represent public IP addresses (like a.b.c.d for example). The LAN port and connected computers (A through C) use private IP addresses that are in one subnet. The DMZ port and connected servers (D through F) use public IP addresses that are in another subnet. The public IP addresses of the DMZ and WAN ports are in separate subnets.

Figure 82 DMZ Public Address Example

LAN A IP: 192.168.1.3 LAN WAN Tr IP: 192.168.1.1 IP: a.b.d.b Internet ) DJ Æ B SR IP: 192.168.1.4 DMZ IP: a.b.ch —s c = IP: 192.168.1.5 =_ pa = F D LU} Lu) IP: a.b.c.k

IP: a.b.c.i = E DMZ LUN IP: a.b.c

7.6 DMZ Private and Public IP Address Example

The following figure shows a network setup with both private and public IP addresses on the DMZ. Lower case letters represent public IP addresses (like a.b.c.d for example). The LAN port and connected computers (A through C) use private IP addresses that are in one subnet. The DMZ port and server F use private IP addresses that are in one subnet. The private IP addresses of the LAN and DMZ are on separate subnets. The DMZ port and connected servers (D and E) use public IP addresses that are in one subnet. The public IP addresses of the DMZ and WAN are on separate subnets.

Configure one subnet (either the public or the private) in the Network > DMZ screen (see Figure 7.2 on page 135) and configure the other subnet in the Network > DMZ > IP Alias screen (see Figure 7.4 on page 139) to use this kind of network setup. You also need to configure NAT for the private DMZ IP addresses.

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Chapter 7 DMZ Screens

Figure 83 DMZ Private and Public Address Example

Use the Port Roles screen to set ports as part of the LAN and/or DMZ interface. Ports 1-4 on the ZyXEL Device can be part of the LAN and/or DMZ interface.

paf Do the following if you are configuring from a computer connected to a LAN or DMZ port and changing the port's role:

1 A port's IP address varies as its role changes, make sure your computer's IP address is in the same subnet as the ZyXEL Device's LAN or DMZ IP address. 2 Use the appropriate LAN or DMZ IP address to access the ZyXEL Device. To change your ZyXEL Devices port role settings, click NETWORK > DMZ > Port Roles. The screen appears as shown. The radio buttons correspond to Ethernet ports on the front panel of the ZyXEL Device. On the ZyXEL Device, ports 1 to 4 are all LAN ports by default.

Æ Your changes are also reflected in the LAN Port Roles screens.

142 NBG410W3G Series Users Guide

The following table describes the labels in this screen. Table 27 NETWORK > DMZ > Port Roles

LABEL DESCRIPTION LAN Select a port's LAN radio button to use the port as part of the LAN. The port will use the ZyXEL Device's LAN IP address and MAC address.

DMZ Select a ports DMZ radio button to use the port as part of the DMZ. The port will use the ZyXEL Device's DMZ IP address and MAC address.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

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This chapter discusses how to configure wireless LAN on the ZyXEL Device.

8.1 Wi-Fi Introduction

Your ZyXEL Device comes with an internal Wi-Fi card, providing AP (access point) functionality, and allowing you to set up a wireless LAN (WLAN). Before you set up your WLAN it is important to understand WLAN and WLAN security concepts.

A wireless LAN can be as simple as two computers with wireless LAN adapters communicating in a peer-to-peer network or as complex as a number of computers with wireless LAN adapters communicating through access points which bridge network traffic to the wired LAN.

The following figure provides an example of a wireless network.

Figure 85 Example of a Wireless Network

The wireless network is the part in the blue circle. In this wireless network, devices A and B are called wireless clients. The wireless clients use the access point (AP) to interact with other devices (such as the printer) or with the Internet. Your ZyXEL Device is the AP.

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Every wireless network must follow these basic guidelines.

+ Every wireless client in the same wireless network must use the same SSID. The SSID is the name of the wireless network. It stands for Service Set IDentity. -+ Iftwo wireless networks overlap, they should use different channels.

Like radio stations or television channels, each wireless network uses a specific channel, or frequency, to send and receive information.

+ Every wireless client in the same wireless network must use security compatible with the AP.

Security stops unauthorized devices from using the wireless network. It can also protect the information that is sent in the wireless network.

Æ See the WLAN appendix for more detailed information on WLANSs.

8.2 Wireless Security Overview

The following sections introduce different types of wireless security you can set up in the wireless network.

8.2.1 SSID Normally, the AP acts like a beacon and regularly broadcasts the SSID in the area. You can hide the SSID instead, in which case the AP does not broadcast the SSID. In addition, you should change the default SSID to something that is difficult to guess.

This type of security is fairly weak, however, because there are ways for unauthorized devices

to get the SSID. In addition, unauthorized devices can still see the information that is sent in the wireless network.

8.2.2 MAC Address Filter

Every wireless client has a unique identification number, called a MAC address.! A MAC address is usually written using twelve hexadecimal characters?; for example, 00A0C5000002 or 00:A0:C5:00:00:02. To get the MAC address for each wireless client, see the appropriate User’s Guide or other documentation.

1. Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These kinds of wireless devices might not have MAC addresses.

2. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8,9, À,B,C, D,E, andF.

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You can use the MAC address filter to tell the AP which wireless clients are allowed or not allowed to use the wireless network. If a wireless client is allowed to use the wireless network, it still has to have the correct settings (SSID, channel, and security). If a wireless client is not allowed to use the wireless network, it does not matter if it has the correct settings.

This type of security does not protect the information that is sent in the wireless network. Furthermore, there are ways for unauthorized devices to get the MAC address of an authorized wireless client. Then, they can use that MAC address to use the wireless network.

8.2.3 User Authentication

You can make every user log in to the wireless network before they can use it. This is called user authentication. However, every wireless client in the wireless network has to support IEEE 802.1x to do this.

For wireless networks, there are two typical places to store the user names and passwords for each user.

+ In the AP: this feature is called a local user database or a local database. + In a RADIUS server: this is a server used in businesses more than in homes.

If your AP does not provide a local user database and if you do not have a RADIUS server, you cannot set up user names and passwords for your users.

Unauthorized devices can still see the information that is sent in the wireless network, even if they cannot use the wireless network. Furthermore, there are ways for unauthorized wireless users to get a valid user name and password. Then, they can use that user name and password to use the wireless network.

Local user databases also have an additional limitation that is explained in the next section.

Wireless networks can use encryption to protect the information that is sent in the wireless network. Encryption is like a secret code. If you do not know the secret code, you cannot understand the message.

The types of encryption you can choose depend on the type of user authentication. (See Section 8.2.3 on page 149 for information about this.)

Table 28 Types of Encryption for Each Type of Authentication

No Authentication RADIUS Server Weakest No Security Static WEP 802.1x +Static WEP WPA-PSK WPA Strongest WPA2-PSK or WPA2-PSK-Mix WPAZ2 or WPA2-Mix

For example, if the wireless network has a RADIUS server, you can choose WPA or WPA2. If users do not log in to the wireless network, you can choose no encryption, Static WEP, WPA- PSK, or WPA2-PSK.

Usually, you should set up the strongest encryption that every wireless client in the wireless network supports. For example, suppose the AP does not have a local user database, and you do not have a RADIUS server. Therefore, there is no user authentication. Suppose the wireless network has two wireless clients. Device A only supports WEP, and device B supports WEP and WPA. Therefore, you should set up Static WEP in the wireless network.

It is recommended that wireless clients use WPA-PSK, WPA, or stronger encryption. IÈEE 802.1x and WEP encryption are better than none at all, but it is still possible for unauthorized devices to figure out the original information pretty quickly.

It is not possible to use WPA-PSK, WPA or stronger encryption with a local user database. In this case, it is better to set up stronger encryption with no authentication than to set up weaker encryption with the local user database.

If some wireless clients support WPA and some support WPA2, you should set up WPA2- PSK-Mix or WPA2-Mix (depending on the type of wireless network login) in the ZyXEL Device.

Many types of encryption use a key to protect the information in the wireless network. The longer the key, the stronger the encryption. Every wireless client in the wireless network must have the same key.

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8.2.5 Additional Installation Requirements for Using 802.1x

+ A computer with an IEEE 802.11b/g wireless LAN card. + A computer equipped with a web browser (with JavaScript enabled) and/or Telnet.

+ A wireless station must be running IEEE 802.1x-compliant software. Currently, this is offered in Windows XP.

+ An optional network RADIUS server for remote user authentication and accounting.

If you are configuring the ZyXEL Device from a computer connected to the wireless LAN and you change the ZyXEL Device’s SSID or security settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the ZyXEL Device’s new settings.

Click WIRELESS > Wi-Fi to open the Wireless Card screen.

Figure 86 WIRELESS > Wi-Fi > Wireless Card Wi-Fi

Wireless Card Setting

The following table describes the labels in this screen. Table 29 WIRELESS > Wi-Fi > Wireless Card

LABEL DESCRIPTION Enable Wireless Card

The wireless LAN through a wireless LAN card is turned off by default. Before you enable the wireless LAN you should configure security by setting MAC filters and/or 802.1x security; otherwise your wireless LAN will be vulnerable upon enabling it. Select the check box to enable the wireless LAN.

Select LAN to use the wireless card as part of the LAN. Select DMZ to use the wireless card as part of the DMZ. The ZyXEL Device restarts after you change the wireless card setting.

Note: If you set the wireless card to be part of the LAN or DMZ, you can still use wireless access. The firewall will treat the wireless card as part of the LAN or DMZ respectively.

Select 802.11b Only to allow only IEEE 802.11b compliant wireless devices to associate with the ZyXEL Device.

Select 802.11g Only to allow only IEEE 802.11g compliant wireless devices to associate with the ZyXEL Device.

Select 802.11b+g to allow both IEEE802.11b and IEEE802.11g compliant wireless devices to associate with the ZyXEL Device. The transmission rate of your ZyXEL Device might be reduced.

Channel ID Set the operating frequency/channel depending on your particular region. To manually set the ZyXEL Device to use a channel, select a channel from the drop-down list box. To have the ZyXEL Device automatically select a channel, click Scan instead.

Click this button to have the ZyXEL Device automatically select the wireless channel with the lowest interference.

In a wireless network which covers a large area, wireless devices are sometimes not aware of each other's presence. This may cause them to send information to the AP at the same time and result in information colliding and not getting through. RTS/CTS is designed to prevent collisions due to hidden nodes. You should only configure RTS/CTS if the possibility of hidden nodes exists on your network and the "cost" of resending large frames is more than the extra network overhead involved in the RTS (Request To Send)/CTS (Clear to Send) handshake.

Enter a value between 256 and 2346. Data with a frame size larger than this value will perform the RTS (Request To Send)/CTS (Clear to Send) handshake. The lower the value, the more often the devices must get permission.

Ifthe RTS/CTS value is greater than the Fragmentation value, then the RTS/CTS handshake will never occur as data frames will be fragmented before they reach RTS/ CTS size.

Fragmentation Threshold

This is the threshold (number of bytes) for the fragmentation boundary for directed messages. It is the maximum data fragment size that can be sent. Enter a value between 256 and 2346.

Set the output power of the ZyXEL Device in this field. If there is a high density of APs in an area, decrease the output power to reduce interference with other APs. Select one of the following 100% (full power), 50%, 25%, 12.5% or min (minimum). See the product specifications for more information on your ZyXEL Device's output power.

Roaming allows wireless stations to switch from one access point to another as they move from one coverage area to another. Select this checkbox to enable roaming on the ZyXEL Device if you have two or more ZyXEL Devices on the same subnet.

Note: AI APS on the same subnet and the wireless clients must have the same SSID to allow roaming.

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Table 29 WIRELESS > Wi-Fi > Wireless Card (continued)

LABEL DESCRIPTION Select SSID Profile

An SSID profile is the set of parameters relating to one of the ZyXEL Device's BSSs. The SSID (Service Set IDentifier) identifies the Service Set with which a wireless client is associated. Wireless clients associating with the access point (AP) must have the same SSID.

Note: If you are configuring the ZyXEL Device from a computer connected to the wireless LAN and you change the ZyXEL Device’s SSID or security settings, you will lose your wireless connection when you press Apply to confirm. You must then change the wireless settings of your computer to match the ZyXEL Device's new settings.

This field displays the index number of each SSID profile.

Choose a profile to apply to your wireless network by selecting its radio button.

This field displays the identification name of each SSID profile on the ZyXEL Device.

SSID This field displays the name of the wireless profile on the network. When a wireless client scans for an AP to associate with, this is the name that is broadcast and seen in the wireless client utility.

This field indicates which security profile is currently associated with each SSID profile.

See Section 8.4 on page 154 for more information.

Click the edit icon next to the profile you want to configure and go to the SSID configuration screen. Click the reset default return the SSID profile

icon to clear all user-entered configuration information and {s factory defaults.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

Configure wireless network security by configuring and applying an SSID profile. You can configure multiple profiles but you can only apply one to your network.

Use the Wireless Card screen to see information about the SSID profiles on the ZyXEL Device, and use the Wireless Card > Edit screen to configure the SSID profiles.

Each SSID profile references the settings configured in the following screens:

+ WIRELESS > Wi-Fi> Security (one of the security profiles). + AUTH SERVER > RADIUS (the RADIUS server settings). + WIRELESS > Wi-Fi > MAC Filter (the MAC filter list, if activated in the SSID profile).

Configure the fields in the above screens to use the settings in an SSID profile.

In the Wireless Card screen, click the edit icon next to an SSID profile to display the following screen.

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The following table describes the labels in this screen.

Table 30 WIRELESS > Wi-Fi > Configuring SSID LABEL DESCRIPTION Name Enter a name (up to 32 printable 7-bit ASCII characters) identifying this profile.

SSID When a wireless client scans for an AP to associate with, this is the name that

is broadcast and seen in the wireless client utility.

Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN.

Hide SSID Select Disable if you want the ZyXEL Device to broadcast this SSID (a wireless client scanning for an AP will find this SSID). Alternatively, select Enable to have the ZyXEL Device hide this SSID (a wireless client scanning for an AP will not find this SSID).

Security Select a security profile to use with this SSID profile. See Section 8.4 on page 154 for more information.

RADIUS This displays N/A if the security profile you selected does not use RADIUS authentication. See Section 8.4 on page 154 for more information.

This displays Radius Configuration if you select a security profile that uses RADIUS authentication. Click Radius Configuration to go to the RADIUS screen where you can view and/or change the RADIUS settings.

See Section 10.3 on page 193 for more information.

Enable MAC Filtering | Select Enable from the drop down list box to activate MAC address filtering.

Apply Click Apply to save your customized settings and exit this screen.

Cancel Click Cancel to exit this screen without saving.

8.4 Configuring Wireless Security

Click WIRELESS > Wi-Fi > Security to open the Security screen. Use this screen to create security profiles. A security profile is a group of configuration settings which can be assigned to an SSID profile in the Wireless Card screen.

The screen changes when you configure a security profile and varies according to the security modes you select.

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The following table describes the security modes you can configure. Table 31 Security Modes

SECURITY MODE DESCRIPTION None Select this to have no data encryption.

WEP Select this to use WEP encryption.

802.1x-Only Select this to use 802.1x authentication with no data encryption.

Select this to use 802.1x authentication with a static 64bit WEP key and an authentication server.

Select this to use 802.1x authentication with a static 128bit WEP key and an authentication server.

WPA Select this to use WPA.

WPA-PSK Select this to use WPA with a pre-shared key.

WPA2 Select this to use WPA2.

WPA2-MIX Select this to use either WPA2 or WPA depending on which security mode the wireless client uses.

WPA2-PSK Select this to use WPA2 with a pre-shared key.

WPA2-PSK-MIX Select this to use either WPA-PSK or WPA2-PSK depending on which

security mode the wireless client uses.

Figure 88 WIRELESS > Wi-Fi > Security

_ Securi L MAC Filter

security01. | None | F @ security02 | WPAZ-PSK-MIX | F @ security03 | WPA2-PSK F & security04 | 8021x-Oniy F & security0 | WEP | F & security06 | None | F & security07 | None F & security08 | None F @

The following table describes the labels in this screen. Table 32 WIRELESS > Wi-Fi > Security

LABEL DESCRIPTION Security Profile

Index This is the index number of the security profile.

Profile Name | This field displays a name given to a security profile in the Security configuration

This field displays the security mode this security profile uses.

Click the edit icon to configure security settings for that profile.

Click the reset default icon to clear all user-entered configuration information and return the security profile to its factory defaults.

NBG410W36G Series User's Guide

Æ If you do not enable any wireless security on your ZyXEL Device, your network is accessible to any wireless networking device within range.

Figure 89 WIRELESS > Wi-Fi > Security: None

Wireless Card Security MAC Filter Security Profile Name : Fecurtyot

Security Mode : None O Appy Cancel

The following table describes the wireless LAN security labels in this screen.

Table 33 WIRELESS > Wi-Fi > Security: None

LABEL DESCRIPTION Name Type a name (up to 32 printable 7-bit ASCII characters) to identify this security profile.

Security Mode | Select None to allow wireless clients to communicate with the access points without any data encryption.

Apply Click Apply to save your customized settings and exit this screen.

Cancel Click Cancel to exit this screen without saving.

8.4.2 Static WEP Static WEP provides a mechanism for encrypting data using encryption keys. Both the AP and the wireless stations must use the same WEP key to encrypt and decrypt data.

Your ZyXEL Device allows you to configure up to four 64-bit, 128-bit or 152-bit WEP keys, but only one key can be used at any one time.

In order to configure and enable WEP encryption, click WIRELESS > Wi-Fi > Security > Edit.

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The following table describes the labels in this screen.

Table 34 WIRELESS > Wi-Fi > Security: WEP LABEL DESCRIPTION Name Type a name to identify this security profile.

Security Mode | Select WEP from the drop-down list.

WEP WEP (Wired Equivalent Privacy) provides data encryption to prevent unauthorized Encryption wireless stations from accessing data transmitted over the wireless network. Select 64-bit WEP, 128-bit WEP or 152-bit WEP to enable data encryption.

Authentication | Select Shared-Key to have the ZyXEL Device use the default WEP key to Method authenticate the wireless client to the ZyXEL Device. Select Auto to have the ZyXEL Device switch between the shared-key and open

system (the wireless clients and AP do not share a secret key for authentication) modes automatically.

The default setting is Auto.

Key 1 to Key 4 | The WEP keys are used to encrypt data. Both the ZyXEL Device and the wireless clients must use the same WEP key for data transmission.

If you chose 64-bit WEP in the WEP Encryption field, then enter any 5 ASCII characters or 10 hexadecimal characters ("0-9", "A-F") preceded by 0x for each key. If you chose 128-bit WEP in the WEP Encryption field, then enter 13 ASCII characters or 26 hexadecimal characters ("0-9", "A-F") preceded by 0x for each key. If you chose 152-bit WEP in the WEP Encryption field, then enter 16 ASCII characters or 32 hexadecimal characters ("0-9", "A-F") preceded by 0x for each key. You can configure up to four keys, but only one key can be activated at any one time. The default key is key 1.

Apply Click Apply to save your customized settings and exit this screen.

Cancel Click Cancel to exit this screen without saving.

8.4.3 IEEE 802.1x Only

The following table describes the labels in this screen. Table 35 WIRELESS > Wi-Fi > Security: 802.1x Only

LABEL DESCRIPTION Name

Type a name to identify this security profile.

Select 8021X-Only from the drop-down list.

ReAuthentication Timer

Specify how often wireless clients have to resend user names and passwords in order to stay connected. Enter a time interval between 600 and 65535 seconds. If wireless client authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.

The ZyXEL Device automatically disconnects a wireless client from the wireless network after a period of inactivity. The wireless client needs to send the username and password again before it can use the wireless network again. Some wireless clients may prompt users for a username and password; other clients may use saved login credentials. In either case, there is usually a short delay while the wireless client logs in to the wireless network again.

This value is usually smaller when the wireless network is keeping track of how much time each wireless client is connected to the wireless network (for example, using an authentication server). If the wireless network is not keeping track of this information, you can usually set this value higher to reduce the number of delays caused by logging in again.

Enter a time interval between 600 and 65535 seconds.

Authentication Databases

Click Local User to go to the Local User Database screen where you can view and/or edit the list of users and passwords. Click RADIUS to go to the RADIUS screen where you can configure the ZyXEL Device to check an external RADIUS server.

Click Apply to save your customized settings and exit this screen.

Click Cancel to exit this screen without saving.

The following table describes the labels in this screen.

Table 36 WIRELESS > Wi-Fi > Security: 802.1x + Static WEP LABEL DESCRIPTION Name

Type a name to identify this security profile.

Select 8021X-Static64 or 8021X-Static128 from the drop-down list.

If you chose 8021X-Static64 in the Security Mode field, then enter any 5 characters (ASCII string) or 10 hexadecimal characters ("0-9", "A-F") preceded by Ox for each key.

If you chose 8021X-Static128 in the Security Mode field, then enter 13 characters (ASCII string) or 26 hexadecimal characters ("0-9", "A-F") preceded by 0x for each key.

There are four data encryption keys to secure your data from eavesdropping by unauthorized wireless users. The values for the keys must be set up exactly the same on the access points as they are on the wireless clients.

ReAuthentication Timer

Specify how often wireless clients have to resend user names and passwords in order to stay connected. Enter a time interval between 600 and 65535 seconds. Ifwireless client authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.

The ZyXEL Device automatically disconnects a wireless client from the wireless network after a period of inactivity. The wireless client needs to send the username and password again before it can use the wireless network again. Some wireless clients may prompt users for a username and password; other clients may use saved login credentials. In either case, there is usually a short delay while the wireless client logs in to the wireless network again.

This value is usually smaller when the wireless network is keeping track of how much time each wireless client is connected to the wireless network (for example, using an authentication server). If the wireless network is not keeping track of this information, you can usually set this value higher to reduce the number of delays caused by logging in again.

Enter a time interval between 600 and 65535 seconds.

Authentication Databases

Click Local User to go to the Local User Database screen where you can view and/or edit the list of users and passwords. Click RADIUS to go to the RADIUS screen where you can configure the ZyXEL Device to check an external RADIUS server.

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Table 36 WIRELESS > Wi-Fi > Security: 802.1x + Static WEP (continued)

LABEL DESCRIPTION Apply Click Apply to save your customized settings and exit this screen.

Cancel Click Cancel to exit this screen without saving.

8.4.5 WPA, WPA2, WPA2-MIX

Click WIRELESS > Wi-Fi > Security > Edit. Select WPA, WPA2 or WPA2-MIX from the Security Mode list.

The following table describes the labels in this screen.

Table 37 WIRELESS > Wi-Fi > Security: WPA, WPA2 or WPA2-MIX LABEL DESCRIPTION Name Type a name to identify this security profile. Security Mode Select WPA, WPA2 or WPA2-MIX from the drop-down list. ReAuthentication | Specify how often wireless clients have to resend user names and passwords in

Timer order to stay connected. Enter a time interval between 600 and 65535 seconds.

If wireless client authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.

Idle Timeout The ZyXEL Device automatically disconnects a wireless client from the wireless network after a period of inactivity. The wireless client needs to send the username and password again before it can use the wireless network again. Some wireless clients may prompt users for a username and password; other clients may use saved login credentials. In either case, there is usually a short delay while the wireless client logs in to the wireless network again.

This value is usually smaller when the wireless network is keeping track of how much time each wireless client is connected to the wireless network (for example, using an authentication server). If the wireless network is not keeping track of this information, you can usually set this value higher to reduce the number of delays caused by logging in again.

Enter a time interval between 600 and 65535 seconds.

Group Key The Group Key Update Timer is the rate at which the AP sends a new group key Update Timer out to all clients. The re-keying process is the WPA equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key Update Timer is also supported in WPA(2)-PSK mode.

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Table 37 WIRELESS > Wi-Fi > Security: WPA, WPA2 or WPA2-MIX (continued)

LABEL DESCRIPTION PMK Cache

This field is available only when you select WPA2 or WPA2-MIX.

When a wireless client moves from one AP's coverage area to another, it performs an authentication procedure (exchanging security information) with the new AP. Instead of re-authenticating a client each time it returns to the AP's coverage area, which can cause delays to time-sensitive applications, the AP and the client can store (or “cache”) and use information about their previous authentication.

Select Enable to allow PMK (Pairwise Master Key) caching, or Disable to switch this feature off.

Click Apply to save your customized settings and exit this screen.

Click Cancel to exit this screen without saving.

8.4.6 WPA-PSK, WPA2-PSK, WPA2-PSK-MIX Click WIRELESS > Wi-Fi > Security > Edit. Select WPA-PSK, WPA2-PSK or WPA2- PSK-MIX from the Security Mode list.

Figure 94 WIRELESS > Wi-Fi > Security: WPA(2)-PSK Wireless Card

The following table describes the labels in this screen.

Table 38 WIRELESS > Wi-Fi > Security: WPA(2)-PSK LABEL DESCRIPTION Name

Type a name to identify this security profile.

Select WPA-PSK, WPA2-PSK or WPA2-PSK-MIX from the drop-down list.

The encryption mechanisms used for WPA(2) and WPA(2)-PSK are the same. The only difference between the two is that WPA(2)-PSK uses a simple common password, instead of user-specific credentials.

Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including spaces and symbols).

ReAuthentication Timer

Specify how often wireless clients have to resend user names and passwords in order to stay connected. Enter a time interval between 600 and 65535 seconds. If wireless client authentication is done using a RADIUS server, the reauthentication timer on the RADIUS server has priority.

NBG410W36G Series User's Guide

Table 38 WIRELESS > Wi-Fi > Security: WPA(2)-PSK (continued)

LABEL DESCRIPTION Idle Timeout The ZyXEL Device automatically disconnects a wireless client from the wireless network after a period of inactivity. The wireless client needs to send the username and password again before it can use the wireless network again. Some wireless clients may prompt users for a username and password; other clients may use saved login credentials. In either case, there is usually a short delay while the wireless client logs in to the wireless network again.

This value is usually smaller when the wireless network is keeping track of how much time each wireless client is connected to the wireless network (for example, using an authentication server). If the wireless network is not keeping track of this information, you can usually set this value higher to reduce the number of delays caused by logging in again.

Enter a time interval between 600 and 65535 seconds.

Group Key The Group Key Update Timer is the rate at which the AP sends a new group key Update Timer out to all clients. The re-keying process is the WPA equivalent of automatically changing the WEP key for an AP and all stations in a WLAN on a periodic basis. Setting of the Group Key Update Timer is also supported in WPA(2)-PSK mode.

Apply Click Apply to save your customized settings and exit this screen.

Cancel Click Cancel to exit this screen without saving.

The MAC filter screen allows you to configure the ZyXEL Device to give exclusive access to specific devices (Allow) or exclude specific devices from accessing the ZyXEL Device (Deny). Every Ethernet device has a unique MAC (Media Access Control) address. The MAC addres: igned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. You need to know the MAC addresses of the devices to configure this screen.

To change your ZyXEL Device’s MAC filter settings, click the WIRELESS > Wi-Fi > MAC Filter. The screen appears as shown.

To activate MAC filtering on a profile, select Enable from the Enable MAC Filtering drop-down list box in the Wireless Card > Edit screen and click

The following table describes the labels in this menu. Table 39 WIRELESS > Wi-Fi > MAC Filter

LABEL DESCRIPTION Association | Define the filter action for the list of MAC addresses in the MAC address filter table. Select Deny to block access to the router, MAC addresses not listed will be allowed to access the router. Select Allow to permit access to the router, MAC addresses not listed will be denied access to the router.

# This is the index number of the MAC address.

User Name | Enter a descriptive name for the MAC address.

MAC Enter the MAC addresses (in XX:XX:XX:XX:XX:XX format) of the wireless stations that Address are allowed or denied access to the ZyXEL Device in these address fields.

Apply Click Apply to save your changes back to the ZyXEL Device.

Reset Click Reset to begin configuring this screen afresh.

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This chapter shows you how to configure your ZyXEL Device’s firewall.

9.1 Firewall Overview

The networking term firewall is a system or group of systems that enforces an access-control policy between two networks. It is generally a mechanism used to protect a trusted network from an untrusted network.

The ZyXEL Device physically separates the LAN, DMZ and the WAN and acts as a secure gateway for all data passing between the networks. The ZyXEL Device protects against Denial of Service (DoS) attacks, prevents theft, destruction and modification of data, and logs events.

Enable the firewall to protect your LAN computers from attacks by hackers on the Internet and control access between the LAN, DMZ and WAN. By default the firewall:

+ _allows traffic that originates from your LAN computers to go to all of the networks.

+ blocks traffic that originates on the other networks from going to the LAN.

*_allows traffic that originates on the WAN to go to the DMZ and protects your DMZ

computers against Dos attacks.

The following figure illustrates the default firewall action. User A can initiate an IM (Instant Messaging) session from the LAN to the WAN (1). Return traffic for this session is also allowed (2). However other traffic initiated from the WAN is blocked (3 and 4).

Figure 96 Default Firewall Action

LAN WAN CNTN Internet )

D Your customized rules take precedence and override the ZyXEL Device’s default settings. The ZyXEL Device checks the source IP address, destination IP address and IP protocol type of network traffic against the firewall rules (in the order you list them). When the traffic matches a rule, the ZyXEL Device takes the action specified in the rule.

9.2 Packet Direction Matrix

The ZyXEL Device’s packet direction matrix allows you to apply certain security settings (like firewall) to traffic flowing in specific directions.

For example, click SECURITY > FIREWALL to open the following screen. This screen configures general firewall settings.

Figure 97 SECURITY > FIREWALL > Default Rule

MF Enable Firewall FF Allow Asymmetrical Route (Warning: When this box is checked, all LAN to LAN, WAN1 to WAN1, WAN2 to WAN2, and DMZ to DMZ packets will bypass the Firewall check.)

Packets have a source and a destination. The packet direction matrix in the lower part of the screen sets what the ZyXEL Device does with packets traveling in a specific direction that do not match any of the firewall rules.

A specific interface A specific interface

To set the ZyXEL Device to block traffic from WAN 1 from going to the DMZ interfaces, find where the From WANI row and the To DMZ column intersect and set the field to Drop as shown.

NBG410W36G Series Users Guide

Figure 98 Default Block Traffic From WAN1 to DMZ Example

F Allow Asymmetrical Route (Warning: When this box is checked, all LAN to LAN, WAN1 to WAN1, WAN2 to WAN2, and DMZ to DMZ packets will bypass the Firewall check.)

0 Rules 0 Rules 0 Rules 0 Rules

[Per 7 = [permit 7 = [Permit Le "| [Permt 7 =

EEE 2 Rules F 2 Rules F 0 Rules F Rules

9.3 Packet Direction Examples

Firewall rules are grouped based on the direction of travel of packets to which they apply. This

section gives some examples of why you might configure firewall rules for specific connection directions.

By default, the ZyXEL Device allows packets traveling in the following directions.: + LANto LAN These rules specify which computers on the LAN can manage the

ZyXEL Device (remote management) and communicate between networks or subnets connected to the LAN interface (IP alias).

paf You can also configure the remote management

settings to allow only a specific computer to manage the ZyXEL Device.

+ LANto WAN These rules specify which computers on the LAN can access which

1 computers or services connected to WAN 1. See Section 9.5 on page 171 for an example.

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By default, the ZyXEL Device drops packets traveling in the following directions.

+ WAN ItoLAN These rules specify which computers connected to WAN 1 can access which computers or services on the LAN. For example, you may

+ Allow certain types of traffic, such as Lotus Notes database synchronization, from specific hosts on the Internet to specific hosts on the LAN.

+ Allow public access to a Web server on your protected network. You could also block certain IP addresses from accessing it.

EE You also need to configure NAT port forwarding (or full featured NAT address mapping rules) to allow computers on the WAN to access devices on the LAN. See Section 12.5.3 on page 236 for

+ WANto WAN By default the ZyXEL Device stops computers connected to WANI or WAN2 from managing the ZyXEL Device or using the ZyXEL Device as a gateway to communicate with other computers on the WAN. You could configure one of these rules to allow a WAN computer to manage the ZyXEL Device.

Æ You also need to configure the remote management settings to allow a WAN computer

to manage the ZyXEL Device.

9.4 Security Considerations

paf Incorrectly configuring the firewall may block valid access or introduce security risks to the ZyXEL Device and your protected network. Use caution when creating or deleting firewall rules and test your rules after you configure them.

Consider these security ramifications before creating a rule:

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1 Does this rule stop LAN users from accessing critical resources on the Internet? For

example, if IRC is blocked, are there users that require this service? 2 Is it possible to modify the rule to be more specific? For example, if IRC is blocked for all users, will a rule that blocks just certain users be more effective? 3 Does a rule that allows Internet users access to resources on the LAN create a security vulnerability? For example, if FTP ports (TCP 20, 21) are allowed from the Internet to the LAN, Internet users may be able to connect to computers with running FTP servers.

4 Does this rule conflict with any existing rules?

Once these questions have been answered, adding rules is simply a matter of entering the information into the correct fields in the web configurator screens.

9.5 Firewall Rules Example

Suppose that your company decides to block all of the LAN users from using IRC (Internet

Relay Chat) through the Internet. To do this, you would configure a LAN to WAN firewall rule that blocks IRC traffic from any source IP address from going to any destination address. You do not need to specify a schedule since you need the firewall rule to always be in effect. The

following figure shows the results of this rule.

Figure 99 Blocking All LAN to WAN IRC Traffic Example

Your firewall would have the following configuration.

Table 40 Blocking All LAN to WAN IRC Traffic Example # source |PESTINATIO |SCHEDULE |SERVICE | ACTION 1 Any Any Any IRC Drop Default | Any Any Any Any Allow

+ The first row blocks LAN access to the IRC service on the WAN.

+ The second row is the firewall’s default policy that allows all traffic from the LAN to go to the WAN.

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The ZyXEL Device applies the firewall rules in order. So for this example, when the ZyXEL Device receives traffic from the LAN, it checks it against the first rule. If the traffic matches (if it is IRC traffic) the firewall takes the action in the rule (drop) and stops checking the firewall rules. Any traffic that does not match the first firewall rule will match the default rule and the ZyXEL Device forwards it.

Now suppose that your company wants to let the CEO use IRC. You can configure a LAN to WAN firewall rule that allows IRC traffic from the IP address of the CEO’s computer. In order to make sure that the CEO’s computer always uses the same IP address, make sure it either:

+ has a static IP address,

*_or you configure a static DHCP entry for it so the ZyXEL Device always assigns it the same IP address (see Section 5.8 on page 106 for information on static DHCP).

Now you configure a LAN to WAN firewall rule that allows IRC traffic from the IP address of the CEO’s computer (192.168.1.7 for example) to go to any destination address. You do not need to specify a schedule since you want the firewall rule to always be in effect. The following figure shows the results of your two custom rules.

Figure 100 Limited LAN to WAN IRC Traffic Example

WAN NN + R= ; CI) J IRC nes m2" (intemet })

D Your firewall would have the following configuration.

Table 41 Limited LAN to WAN IRC Traffic Example

# source |PESTINATIO |SCHEDULE |SERVICE | ACTION 1 192.168.1.7 | Any Any IRC Allow 2 Any Any Any IRC Drop Default | Any Any Any Any Allow

+ The first row allows the LAN computer at IP address 192.168.1.7 to access the IRC service on the WAN.

+ The second row blocks LAN access to the IRC service on the WAN. + The third row is (still) the firewall’s default policy of allowing all traffic from the LAN to

The rule for the CEO must come before the rule that blocks all LAN to WAN IRC traffic. If the rule that blocks all LAN to WAN IRC traffic came first, the CEO's IRC traffic would match that rule and the ZyXEL Device would drop it and not check any other firewall rules.

9.6 Asymmetrical Routes

If an alternate gateway on the LAN has an IP address in the same subnet as the ZyXEL Device’s LAN IP address, return traffic may not go through the ZyXEL Device. This is called an asymmetrical or “triangle” route. This causes the ZyXEL Device to reset the connection, as the connection has not been acknowledged.

You can have the ZyXEL Device permit the use of asymmetrical route topology on the network (not reset the connection).

Allowing asymmetrical routes may let traffic from the WAN go directly to the LAN without passing through the ZyXEL Device. A better solution is to use IP alias to put the ZyXEL Device and the backup gateway on separate subnets.

9.6.1 Asymmetrical Routes and IP Alias

You can use IP alias instead of allowing asymmetrical routes. IP Alias allow you to partition your network into logical sections over the same interface.

By putting your LAN and Gateway A in different subnets, all returning network traffic must pass through the ZyXEL Device to your LAN. The following steps describe such a scenario.

1 A computer on the LAN initiates a connection by sending a SYN packet to a receiving server on the WAN.

2 The ZyXEL Device reroutes the packet to Gateway A, which is in Subnet 2. 3 The reply from the WAN goes to the ZyXEL Device. 4 The ZyXEL Device then sends it to the computer on the LAN in Subnet 1.

Figure 101 Using IP Alias to Solve the Triangle Route Problem

LAN Subnet 1 WAN A Internet

Use this screen to configure general firewall settings.

Fr Allow Asymmetrical Route (Warning: When this box is checked, all LAN te LAN, WAN2 to WAN1, WANZ te WAN2, and DMZ to DMZ packets will bypass the Firewall check.)

0 Rules 0 Rules 9 Rules Rules

This bar displays the percentage of the ZyXEL Device's firewall rules storage space that is currently in use. When the storage space is almost full, you should consider deleting unnecessary firewall rules before adding more firewall rules.

Select this check box to activate the firewall. The ZyXEL Device performs access control and protects against Denial of Service (DoS) attacks when the firewall is activated.

Note: When you activate the firewall, all current connections through the ZyXEL Device are dropped when you apply your changes.

Allow If an alternate gateway on the LAN has an IP address in the same subnet as the

Asymmetrical ZyXEL Devices LAN IP address, return traffic may not go through the ZyXEL Route Device. This is called an asymmetrical or “triangle” route. This causes the ZyXEL Device to reset the connection, as the connection has not been acknowledged.

Select this check box to have the ZyXEL Device permit the use of asymmetrical route topology on the network (not reset the connection).

Note: Allowing asymmetrical routes may let traffic from the WAN go directly to the LAN without passing through the ZyXEL Device. A better solution is to use IP alias to put the ZyXEL Device and the backup gateway on separate subnets. See Section 9.6.1 on page 173 for an example.

Table 42 SECURITY > FIREWALL > Default Rule (continued)

LABEL DESCRIPTION From, To The firewall rules are grouped by the direction of packet travel. This displays the number of rules for each packet direction. Click the edit icon to go to a summary screen of the rules for that packet direction.

Here is an example description of the directions of travel.

From LAN To LAN means packets traveling from a computer on one LAN subnet to a computer on another LAN subnet on the LAN interface of the ZyXEL Device or the ZyXEL Device itself. The ZyXEL Device does not apply the firewall to packets traveling from a LAN computer to another LAN computer on the same subnet.

Use the drop-down list box to set the firewall's default actions based on the direction of travel of packets.

Select Drop to silently discard the packets without sending a TCP reset packet or an ICMP destination-unreachable message to the sender.

Select Reject to deny the packets and send a TCP reset packet (for a TCP packet) or an ICMP destination-unreachable message (for a UDP packet) to the sender.

Select Permit to allow the passage of the packets.

Log Select the check box next to a direction of packet travel to create a log when the above action is taken for packets that are traveling in that direction and do not match any of your customized rules.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

9.8 Firewall Rule Summary

Click SECURITY > FIREWALL > Rule Summary to open the screen. This screen displays a list of the configured firewall rules.

paf The ordering of your rules is very important as rules are applied in the order that they are listed.

See Section 9.1 on page 167 for more information about the firewall.

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Default Rule Rule Summary Anti-Probing Threshold Service Packet Direction: [want kel ar 1 Ceres]

WANI to DMZ - Default P:

WAN1 to WAN2 - Default Policy : Drop

The following table describes the labels in this screen. Table 43 SECURITY > FIREWALL > Rule Summary

LABEL DESCRIPTION Packet Direction | Use the drop-down list boxes and click Refresh to select a direction of travel of packets for which you want to display firewall rules.

+ In the heading row, click + to expand or - to collapse the Source Address, Destination Address and Service Type drop down lists for all of the displayed rules.

Default Policy This field displays the default action you selected in the Default Rule screen for the packet direction displayed.

The following fields summarize the rules you have created that apply to traffic traveling in the selected packet direction. The firewall rules that you configure (summarized below) take priority over the general firewall action settings above.

# This is your firewall rule number. The ordering of your rules is important as rules are applied in turn. Click + to expand or - to collapse the Source Address, Destination Address and Service Type drop down lists.

Name This is the name of the firewall rule. Active This field displays whether a firewall is turned on (Y) or not (N). Click the setting to change it.

Source Address | This drop-down list box displays the source addresses or ranges of addresses to which this firewall rule applies. Please note that a blank source or destination address is equivalent to Any.

Destination This drop-down list box displays the destination addresses or ranges of addresses Address to which this firewall rule applies. Please note that a blank source or destination address is equivalent to Any.

Service Type This drop-down list box displays the services to which this firewall rule applies. Custom services have an * before the name. See Appendix D on page 385 for a list of common services.

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This field displays whether the firewall silently discards packets (Drop), discards packets and sends a TCP reset packet or an ICMP destination-unreachable message to the sender (Reject) or allows the passage of packets (Permit).

This field tells you whether a schedule is specified (Yes) or not (No).

This field shows you whether a log is created when packets match this rule (Yes) or not (No).

Click the edit icon to go to the screen where you can edit the rule.

Click the delete icon to delete an existing firewall rule. A window displays asking you to confirm that you want to delete the firewall rule. Note that subsequent firewall rules move up by one when you take this action.

Click the insert icon to display the screen where you can configure a new firewall rule. The insert icon at the top of the row creates the new firewall rule before the others. The individual firewall rule insert icons create a new firewall rule after the row's firewall rule.

Click the move icon, type an index number, and press Enter to move the rule to the number that you typed. The ordering of your rules is important as they are applied in order of their numbering.

9.8.1 Firewall Edit Rule

In the Rule Summary screen, click the edit icon or the insert icon to display the Firewall Edit Rule screen.

Use this screen to create or edit a firewall rule. Refer to the following table for information on

See Section 9.1 on page 167 for more information about the firewall.

Figure 104 SECURITY > FIREWALL > Rule Summary > Edit

FIREWALL - EDIT RULE Edit Source Address

Edit Destination Address

Actions When Matched

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The following table describes the labels in this screen. Table 44 SECURITY > FIREWALL > Rule Summary > Edit

LABEL DESCRIPTION Rule Name Enter a descriptive name of up to 31 printable ASCII characters (except Extended ASCII characters) for the firewall rule. Spaces are allowed.

Address Type Do you want your rule to apply to packets with a particular (single) IP, a range of IP

addresses (for example 192.168.1.10 to 192.169.1.50), a subnet or any IP address? Select an option from the drop-down list box that includes: Single Address, Range Address, Subnet Address and Any Address.

Enter the single IP address or the starting IP address in a range here.

Enter the ending IP address in a range here.

Enter the subnet mask here, if applicable.

Add Click Add to add a new address to the Source or Destination Address(es) box. You can add multiple addresses, ranges of addresses, and/or subnets.

Modify To edit an existing source or destination address, select it from the box and click Modify.

Delete Highlight an existing source or destination address from the Source or Destination Address(es) box above and click Delete to remove it.

Available/ Highlight a service from the Available Services box on the left, then click >> to

Selected add it to the Selected Service(s) box on the right. To remove a service, highlight it

Services in the Selected Service(s) box on the right, then click <<. Next to the name of a service, two fields appear in brackets. The first field indicates the IP protocol type (TCP, UDP, or ICMP). The second field indicates the IP port number that defines the service. (Note that there may be more than one IP protocol type). For example, look at the DNS entry, (UDP/TCP:53) means UDP port 53 and TCP port 53. Click the Service link to go to the Service screen where you can configure custom service ports. See Appendix D on page 385 for a list of commonly used services and port numbers. You can use the [CTRL] key and select multiple services at once.

Day to Apply Select everyday or the day(s) of the week to apply the rule.

Time of Day to Apply (24-Hour

Select All Day or enter the start and end times in the hour-minute format to apply the rule.

Administrator When Matched

Log Packet This field determines if a log for packets that match the rule is created (Yes) or not Information When | (No). Go to the Log Settings page and select the Access Control logs category Matched to have the ZyXEL Device record these logs.

Send Alert Select the check box to have the ZyXEL Device generate an alert when the rule is Message to matched.

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LABEL DESCRIPTION Action for Matched Packets

Use the drop-down list box to select what the firewall is to do with packets that match this rule.

Select Drop to silently discard the packets without sending a TCP reset packet or an ICMP destination-unreachable message to the sender.

Select Reject to deny the packets and send a TCP reset packet (for a TCP packet) or an ICMP destination-unreachable message (for a UDP packet) to the sender.

Select Permit to allow the passage of the packets.

Note: You also need to configure NAT port forwarding (or full featured NAT address mapping rules) if you want to allow computers on the WAN to access devices on the LAN.

Note: You may also need to configure the remote management settings if you want to allow a WAN computer to manage the ZyXEL Device or restrict management from the LAN.

Click Apply to save your customized settings and exit this screen.

Click Cancel to exit this screen without saving.

Click SECURITY > FIREWALL > Anti-Probing to open the following screen. Configure this screen to help keep the ZyXEL Device hidden from probing attempts. You can specify which of the ZyXEL Device's interfaces will respond to Ping requests and whether or not the ZyXEL Device is to respond to probing for unused ports.

Respond to PING on F LanF waniF wan2N omz F Do not respond to requests for unauthorized services.

The following table describes the labels in this screen. Table 45 SECURITY > FIREWALL > Anti-Probing

LABEL DESCRIPTION Respond to PING | Select the check boxes of the interfaces that you want to reply to incoming Ping on requests.

Clear an interface’s check box to have the ZyXEL Device not respond to any Ping requests that come into that interface.

Do not respond to | Select this option to prevent hackers from finding the ZyXEL Device by probing for

requests for unused ports. |f you select this option, the ZyXEL Device will not respond to port unauthorized request(s) for unused ports, thus leaving the unused ports and the ZyXEL Device services. unseen. ff this option is not selected, the ZyXEL Device will reply with an ICMP

port unreachable packet for a port probe on its unused UDP ports and a TCP reset packet for a port probe on its unused TCP ports.

Note that the probing packets must first traverse the ZyXEL Device's firewall rule checks before reaching this anti-probing mechanism. Therefore if a firewall rule stops a probing packet, the ZyXEL Device reacts based on the firewall rule to either send a TCP reset packet for a blocked TCP packet (or an ICMP port- unreachable packet for a blocked UDP packets) or just drop the packets without sending a response packet.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

9.10 Firewall Thresholds

For Dos attacks, the ZyXEL Device uses thresholds to determine when to start dropping sessions that do not become fully established (half-open sessions). These thresholds apply globally to all sessions.

For TCP, half-open means that the session has not reached the established state-the TCP three- way handshake has not yet been completed. Under normal circumstances, the application that initiates a session sends a SYN (synchronize) packet to the receiving server. The receiver sends back an ACK (acknowledgment) packet and its own SYN, and then the initiator responds with an ACK (acknowledgment). After this handshake, a connection is established.

Figure 106 Three-Way Handshake

For UDP, half-open means that the firewall has detected no return traffic. An unusually high number (or arrival rate) of half-open sessions could indicate a DOS attack.

9.10.1 Threshold Values

If everything is working properly, you probably do not need to change the threshold settings as the default threshold values should work for most small offices. Tune these parameters when you believe the ZyXEL Device has been receiving Dos attacks that are not recorded in the logs or the logs show that the ZyXEL Device is classifying normal traffic as Dos attacks. Factors influencing choices for threshold values are:

1 The maximum number of opened sessions.

2 The minimum capacity of server backlog in your LAN network. 3 The CPU power of servers in your LAN network.

4 Network bandwidth.

5 Type of traffic for certain servers.

Reduce the threshold values if your network is slower than average for any of these factors (especially if you have servers that are slow or handle many tasks and are often busy).

If you often use P2P applications such as file sharing with eMule or eDonkey, it's recommended that you increase the threshold values since lots of sessions will be established during a small period of time and the ZyXEL Device may classify them as Dos attacks.

9.11 Threshold Screen

FIREWALL Default Rule Rule Summary ___ Anti-Probing Service

Denial of Service Thresholds

Action taken when TCP Maximum Incomplete reached threshold

The following table describes the labels in this screen. Table 46 SECURITY > FIREWALL > Threshold

LABEL DESCRIPTION Disable DoS Attack | Select the check boxes of any interfaces for which you want the ZyXEL Device to Protection on not use the Denial of Service protection thresholds. This disables DoS protection on the selected interface.

You may want to disable DoS protection for an interface if the ZyXEL Device is treating valid traffic as DoS attacks. Another option would be to raise the thresholds.

Denial of Service The ZyXEL Device measures both the total number of existing half-open Thresholds sessions and the rate of session establishment attempts. Both TCP and UDP half-open sessions are counted in the total number and rate measurements. Measurements are made once a minute.

One Minute Low This is the rate of new half-open sessions per minute that causes the firewall to stop deleting half-open sessions. The ZyXEL Device continues to delete half- open sessions as necessary, until the rate of new connection attempts drops below this number.

One Minute High This is the rate of new half-open sessions per minute that causes the firewall to start deleting half-open sessions. When the rate of new connection attempts rises above this number, the ZyXEL Device deletes half-open sessions as required to accommodate new connection attempts.

For example, if you set the one minute high to 100, the ZyXEL Device starts deleting half-open sessions when more than 100 session establishment attempts have been detected in the last minute. lt stops deleting half-open sessions when the number of session establishment attempts detected in a minute goes below the number set as the one minute low.

Maximum This is the number of existing half-open sessions that causes the firewall to stop Incomplete Low deleting half-open sessions. The ZyXEL Device continues to delete half-open requests as necessary, until the number of existing half-open sessions drops below this number.

Maximum This is the number of existing half-open sessions that causes the firewall to start Incomplete High deleting half-open sessions. When the number of existing half-open sessions rises above this number, the ZyXEL Device deletes half-open sessions as required to accommodate new connection requests. Do not set Maximum Incomplete High to lower than the current Maximum Incomplete Low number. For example, if you set the maximum incomplete high to 100, the ZyXEL Device starts deleting half-open sessions when the number of existing half-open sessions rises above 100. It stops deleting half-open sessions when the number of existing half-open sessions drops below the number set as the maximum incomplete low.

TCP Maximum An unusually high number of half-open sessions with the same destination host Incomplete address could indicate that a Dos attack is being launched against the host. Specify the number of existing half-open TCP sessions with the same destination host IP address that causes the firewall to start dropping half-open sessions to that same destination host IP address. Enter a number between 1 and 256. As a general rule, you should choose a smaller number for a smaller network, a slower system or limited bandwidth. The ZyXEL Device sends alerts whenever the TCP Maximum Incomplete is exceeded.

Action taken when | Select the action that ZyXEL Device should take when the TCP maximum TCP Maximum incomplete threshold is reached. You can have the ZyXEL Device either: Incomplete Delete the oldest half open session when a new connection request comes. reached threshold |;

Deny new connection requests for the number of minutes that you specify (between 1 and 256).

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

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Click SECURITY > FIREWALL > Service to open the screen as shown next. Use this screen to configure custom services for use in firewall rules or view the services that are predefined in the ZyXEL Device.

See for more information about the firewall.

Figure 108 SECURITY > FIREWALL > Service

The following table describes the labels in this screen. Table 47 SECURITY > FIREWALL > Service

LABEL DESCRIPTION Custom Service

This table shows all configured custom services.

This is the index number of the custom service.

This is the name of the service.

Protocol This is the IP protocol type. If you selected Custom, this is the IP protocol value you entered.

Attribute This is the IP port number or ICMP type and code that defines the service.

Modify Click the edit icon to go to the screen where you can edit the service. Click the delete icon to remove an existing service. À window displays asking you to confirm that you want to delete the service. Note that subsequent services move up by one when you take this action.

Add Click this button to bring up the screen that you use to configure a new custom service that is not in the predefined list of services.

Predefined This table shows all the services that are already configured for use in firewall

Service rules. See Appendix D on page 385 for a list of common services.

# This is the index number of the predefined service.

This is the name of the service.

This is the IP protocol type. There may be more than one IP protocol type.

This is the IP port number or ICMP type and code that defines the service.

9.12.1 Firewall Edit Custom Service

Click SECURITY screen to configure Appendix D on pag port numbers.

> FIREWALL > Service > Add to display the following screen. Use this a custom service entry not is not predefined in the ZyXEL Device. See e 385 the user’s guide appendices for a list of commonly used services and

See Section 9.1 on page 167 for more information about the firewall.

Figure 109 Firewall Edit Custom Service

EE NBG410W36G Series Users Gui

The following table describes the labels in this screen. Table 48 SECURITY > FIREWALL > Service > Add

LABEL DESCRIPTION Service Name

Enter a descriptive name of up to 31 printable ASCII characters (except Extended ASCII characters) for the custom service. You cannot use the “(‘character. Spaces are allowed.

Choose the IP protocol (TCP, UDP, TCP/UDP, ICMP or Custom) that defines your customized service from the drop down list box.

If you select Custom, specify the protocol's number. For example, ICMP is 1, TCP is 6, UDP is 17 and so on.

Enter the port number (from 1 to 255) that defines the customized service

To specify one port only, enter the port number in the From field and enter it again in the To field.

To specify a span of ports, enter the first port in the From field and enter the last port in the To field.

This field is available only when you select ICMP in the IP Protocol field. The ICMP messages are identified by their types and in some cases codes.

Enter the type number in the Type field and select the Code radio button and enter the code number if any.

Click Apply to save your customized settings and exit this screen.

Click Cancel to exit this screen without saving.

9.13 My Service Firewall Rule Example

The following Internet firewall rule example allows a hypothetical My Service connection from the Internet.

1 Inthe Service screen, click Add to open the Edit Custom Service screen.

Figure 110 My Service Firewall Rule Example: Service

*Attbute: Port Range for TCP/UDP, Type/Code for ICMP.

2 Configure it as follows and click Apply.

Figure 111 My Service Firewall Rule Example: Edit Custom Service

FIREWALL - EDIT CUSTOM SERVICE Custom Service

3 Click Rule Summary. Select WANI and LAN from the Packet Direction drop-down list boxes and click Refresh to display existing firewall rules for the selected direction of travel of packets.

4 Click the insert icon at the top of the row to create the new firewall rule before the others.

Figure 112 My Service Firewall Rule Example: Rule Summary

5 The Edit Rule screen displays. Enter the name of the firewall rule. 6 Select Any in the Destination Address(es) box and then click Delete. 7 Configure the destination address fields as follows and click Add.

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Figure 113 My Service Firewall Rule Example: Rule Edit: Source and Destination Addresses

FIREWALL - EDIT RULE Edit Source Address

8 Inthe Edit Service section, use the arrows between Available Services and Selected Service(s) to configure it as follows. Click Apply when you are done.

Custom services show up with an * before their names in the Services list boxes and the Rule Summary screen’s Service Type list box.

FIREWALL - EDIT RULE Edit Source Address

Edit Destination Address

Rule 1 allows a My Service connection from WAN 1 to IP addresses 10.0.0.10 through

10.0.0.15 on the LAN.

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Figure 115 My Service Firewall Rule Example: Rule Summary: Completed

WANI to LAI ault Polic:

This chapter discusses how to configure the ZyXEL Device’s authentication server feature.

10.1 Authentication Server Overview

À ZyXEL Device can use either the local user database internal to the ZyXEL Device or an

external RADIUS server to authenticate wireless clients. See Appendix E on page 389 for more information about RADIUS.

10.2 Local User Database

Click SECURITY > AUTH SERVER to open the Local User Database screen. The local user database is a list of user profiles stored on the ZyXEL Device. The ZyXEL Device can

use this list of user profiles to authenticate users. Use this screen to change your ZyXEL Device’s list of user profiles.

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The following table describes the labels in this screen.

Table 49 SECURITY > AUTH SERVER > Local User Database

LABEL DESCRIPTION Active Select this check box to enable the user profile.

User Name Enter the user name of the user profile.

Password Enter a password up to 31 characters long for this user profile. Apply Click Apply to save your changes. Reset Click Reset to begin configuring this screen afresh.

10.3 RADIUS Click SECURITY > AUTH SERVER > RADIUS to open the RADIUS screen. Configure this screen to use an external RADIUS server to authenticate users.

Figure 117 SECURITY > AUTH SERVER > RADIUS Local User Database | RADIUS | Authentication Server D Active Server IP Address bo0o Port Number Frarz Key | Accounting Server T Active Server IP Address bouc Port Number 1813 Key

The following table describes the labels in this screen.

Table 50 SECURITY > AUTH SERVER > RADIUS LABEL DESCRIPTION Authentication Server

Active Select the check box to enable user authentication through an external authentication server.

Clear the check box to enable user authentication using the local user profile on the ZyXEL Device.

Server IP Address Enter the IP address of the external authentication server in dotted decimal notation. Port Number The default port of the RADIUS server for authentication is 1812.

You need not change this value unless your network administrator instructs you to do so with additional information.

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Table 50 SECURITY > AUTH SERVER > RADIUS LABEL DESCRIPTION Key

Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external authentication server and the ZyXEL Device.

The key is not sent over the network. This key must be the same on the external authentication server and ZyXEL Device.

Select the check box to enable user accounting through an external authentication server.

Enter the IP address of the external accounting server in dotted decimal notation.

Port Number The default port of the RADIUS server for accounting is 1813. You need not change this value unless your network administrator instructs you to do so with additional information.

Key Enter a password (up to 31 alphanumeric characters) as the key to be shared between the external accounting server and the ZyXEL Device. The key is not sent over the network. This key must be the same on the external accounting server and ZyXEL Device.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

NBG410W36G Series Users Guide

This chapter gives background information about public-key certificates and explains how to use them.

11.1 Certificates Overview

The ZyXEL Device can use certificates (also called digital IDs) to authenticate users. Certificates are based on public-private key pairs. A certificate contains the certificate owner’s identity and public key. Certificates provide a way to exchange public keys for use in authentication.

A Certification Authority (CA) issues certificates and guarantees the identity of each certificate owner. There are commercial certification authorities like CyberTrust or VeriSign and government certification authorities. You can use the ZyXEL Device to generate certification requests that contain identifying information and public keys and then send the certification requests to a certification authority.

When using public-key cryptology for authentication, each host has two keys. One key is public and can be made openly available; the other key is private and must be kept secure. Public-key encryption in general works as follows.

1 Tim wants to send a private message to Jenny. Tim generates a public-private key pair. What is encrypted with one key can only be decrypted using the other.

Tim keeps the private key and makes the public key openly available.

Tim uses his private key to encrypt the message and sends it to Jenny.

Jenny receives the message and uses Tim’s public key to decrypt it.

Additionally, Jenny uses her own private key to encrypt a message and Tim uses Jenny’s public key to decrypt the message.

a À & ND The ZyXEL Device uses certificates based on public-key cryptology to authenticate users attempting to establish a connection. The method used to secure the data that you send through an established connection depends on the type of connection.

The certification authority uses its private key to sign certificates. Anyone can then use the certification authority’s public key to verify the certificates.

A certification path is the hierarchy of certification authority certificates that validate a certificate. The ZyXEL Device does not trust a certificate if any certificate on its path has expired or been revoked.

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Certification authorities maintain directory servers with databases of valid and revoked certificates. A directory of certificates that have been revoked before the scheduled expiration is called a CRL (Certificate Revocation List). The ZyXEL Device can check a peer’s certificate against a directory server’s list of revoked certificates. The framework of servers, software, procedures and policies that handles keys is called PKI (public-key infrastructure).

11.1.1 Advantages of Certificates

Certificates offer the following benefits. + The ZyXEL Device only has to store the certificates of the certification authorities that you decide to trust, no matter how many devices you need to authenticate. + Key distribution is simple and very secure since you can freely distribute public keys and you never need to transmit private keys.

11.2 Self-signed Certificates

You can have the ZyXEL Device act as a certification authority and sign its own certificates.

11.3 Verifying a Certificate

Before you import a trusted CA or trusted remote host certificate into the ZyXEL Device, you should verify that you have the actual certificate. This is especially true of trusted CA certificates since the ZyXEL Device also trusts any valid certificate signed by any of the imported trusted CA certificates.

11.3.1 Checking the Fingerprint of a Certificate on Your Computer

A certificate’s fingerprints are message digests calculated using the MDS or SHAI algorithms. The following procedure describes how to check a certificate’s fingerprint to verify that you have the actual certificate.

1 Browse to where you have the certificate saved on your computer. 2 Make sure that the certificate has a “cer” or “.crt” file name extension.

Figure 118 Certificates on Your Computer FE. ce. LU] ELondon-Office.cer ŒLa-office.crt

3 Double-click the certificate’s icon to open the Certificate window. Click the Details tab and scroll down to the Thumbprint Algorithm and Thumbprint fields.

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Figure 119 Certificate Details

1x] General Detais | Certification Path | Show: [cars = Field | Value 2] subject Glenn public key RSA (1024 Bits) Eslkey Usage Digital Signature , Certificate Signing(..…

DNS Names: sic Constraints Subject Type=CA, Path Length Cons.

LE rhumbprint algorithm sha frhumbprint B0A7 2286 7960 FF92 52F4 684C A2... 2

EG Propertie Copy to Fle… Ex]

4 Use a secure method to verify that the certificate owner has the same information in the Thumbprint Algorithm and Thumbprint fields. The secure method may very based on your situation. Possible examples would be over the telephone or through an HTTPS

11.4 Configuration Summary

This section summarizes how to manage certificates on the ZyXEL Device.

Figure 120 Certificate Configuration Overview

My Certificates Trusted CAs Danone Directory Servers

Use the My Certificate screens to generate and export self-signed certificates or certification requests and import the ZyXEL Device’s CA-signed certificates.

Use the Trusted CA screens to save the certificates of trusted CAs to the ZyXEL Device. You can also export the certificates to a computer.

Use the Trusted Remote Hosts screens to import self-signed certificates from trusted remote hosts.

Use the Directory Servers screen to configure a list of addresses of directory servers (that contain lists of valid and revoked certificates).

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11.5 My Certificates

Click SECURITY > CERTIFICATES > My Certificates to open the My Certificates screen. This is the ZyXEL Device’s summary list of certificates and certification requests. Certificates display in black and certification requests display in gray.

Figure 121 SECURITY > CERTIFICATES > My Certificates

My Certificates | Trusted CAS robe

‘The factory default certificate is common to ZyWALLs & NBG410W3G. Click Replace to create a certificate using your NBG410W3G's MAC address that will be specific to this device.

: CN=NBG410W3G cu=necdiowsc 2000en20303en E) Eye auto_generated_self_ signed_cert*SELF| Factory Default Factory Default 09:00:0000:06:00 Certificate Certificate es G

got |_creute |_Ratresh

The following table describes the labels in this screen. Table 51 SECURITY > CERTIFICATES > My Certificates

LABEL DESCRIPTION PKI Storage This bar displays the percentage of the ZyXEL Device's PKI storage space that is Space in Use currently in use. When the storage space is almost full, you should consider

deleting expired or unnecessary certificates before adding more certificates.

Replace This button displays when the ZyXEL Device has the factory default certificate. The factory default certificate is common to all ZyXEL Devices that use certificates. ZyXEL recommends that you use this button to replace the factory default certificate with one that uses your ZyXEL Device's MAC address.

# This field displays the certificate index number. The certificates are listed in alphabetical order.

you give each certificate a unique name.

Name This field displays the name used to identify this certificate. It is recommended that

Type This field displays what kind of certificate this is. REQ represents a certification request and is not yet a valid certificate. Send a

certification request to a certification authority, which then issues a certificate. Use the My Certificate Import screen to import the certificate and replace the request. SELF represents a self-signed certificate.

*SELF represents the default self-signed certificate, which the ZyXEL Device uses to sign imported trusted remote host certificates.

CERT represents a certificate issued by a certification authority.

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Table 51 SECURITY > CERTIFICATES > My Certificates (continued)

LABEL DESCRIPTION Subject This field displays identifying information about the certificate's owner, such as CN (Common Name), OÙ (Organizational Unit or department), O (Organization or company) and C (Country). It is recommended that each certificate have unique subject information.

Issuer This field displays identifying information about the certificate's issuing certification authority, such as a common name, organizational unit or department, organization or company and country. With self-signed certificates, this is the same information as in the Subject field.

Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.

Valid To This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.

Modify Click the details icon to open a screen with an in-depth list of information about the certificate (or certification request).

Click the export icon to save the certificate to a computer. For a certification request, click the export icon and then Save in the File Download screen. The Save As screen opens, browse to the location that you want to use and click Save.

Click the delete icon to remove the certificate (or certification request). À window displays asking you to confirm that you want to delete the certificate.

You cannot delete a certificate that one or more features is configured to use.

Do the following to delete a certificate that shows *SELF in the Type field.

1. Make sure that no other features, such as HTTPS, SSH are configured to use the *SELF certificate.

2. Click the details icon next to another self-signed certificate (see the description on the Create button if you need to create a self-signed certificate).

3. Select the Default self-signed certificate which signs the imported remote host certificates check box.

4. Click Apply to save the changes and return to the My Certificates screen.

5. The certificate that originally showed *SELF displays SELF and you can delete itnow.

Note that subsequent certificates move up by one when you take this action.

The poll now icon displays when the ZyXEL Device generates a certification request successfully but the CA does not issue a certificate and sends a pending notification to the ZyXEL Device. If the icon displays, you can manually click the icon to have the ZyXEL Device query the CA (or RA (Registration Authority)) server for a certificate immediately. Otherwise, the ZyXEL Device checks with the server and updates the status periodically. The poll now icon disappears after the ZyWALL gets a certificate or the request has failed permanently due to being rejected by the CA server.

Import Click Import to open a screen where you can save the certificate that you have enrolled from a certification authority from your computer to the ZyXEL Device.

Create Click Create to go to the screen where you can have the ZyXEL Device generate a certificate or a certification request.

Refresh Click Refresh to display the current validity status of the certificates.

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11.6 My Certificate Details

Click SECURITY > CERTIFICATES > My Certificates to open the My Certificates screen (see Figure 121 on page 198). Click the details icon to open the My Certificate Details screen. You can use this screen to view in-depth certificate information and change the certificate’s name.

Ifitis a self-signed certificate, you can also set the ZyXEL Device to use the certificate to sign

the imported trusted remote host certificates.

Figure 122 SECURITY > CERTIFICATES > My Certificates > Details

Name Futo_generstes_ set signes

Type Self-signed X.509 Certificate Version vs Serial Number 946664845

Subiect CN=NBG410W3G Factory Default Certificate Issuer CN=NBG410W3G Factory Default Certificate Signature Algorithm rsa-pkes1-shal

Valid From 2000 Jan 15t, 00:00:00 GMT Valid To 2030 Jan 1st, 00:00:00 GMT Key Algorithm rsaEncryption (512 bits)

Certificate in PEM (Base-64) Encoded Format

Name This field displays the identifying name of this certificate. lf you want to change

the name, type up to 31 characters to identify this certificate. You may use any character (not including spaces).

Certificate These read-only fields display detailed information about the certificate. Information Type This field displays general information about the certificate. CA-signed means

that a Certification Authority signed the certificate. Self-signed means that the certificate's owner signed the certificate (not a certification authority). “X.509" means that this certificate was created and signed according to the ITU-T X.509 recommendation that defines the formats for public-key certificates.

This field displays the X.509 version number.

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Table 52 SECURITY > CERTIFICATES > My Certificates > Details (continued)

LABEL DESCRIPTION Serial Number

This field displays the certificate's identification number given by the certification authority or generated by the ZyXEL Device.

This field displays information that identifies the owner of the certificate, such as Common Name (CN), Organizational Unit (OU), Organization (O) and Country (C).

This field displays identifying information about the certificate's issuing certification authority, such as Common Name, Organizational Unit, Organization and Country.

With self-signed certificates, this is the same as the Subject Name field.

This field displays the type of algorithm that was used to sign the certificate. The ZyXEL Device uses rsa-pkcs1-sha1 (RSA public-private key encryption algorithm and the SHA1 hash algorithm). Some certification authorities may use rsa-pkcs1-md5 (RSA public-private key encryption algorithm and the MD5 hash algorithm).

This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.

This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.

This field displays the type of algorithm that was used to generate the certificate's key pair (the ZyXEL Device uses RSA encryption) and the length of the key set in bits (1024 bits for example).

Subject Alternative Name

This field displays the certificate owner's IP address (IP), domain name (DNS) or e-mail address (EMAIL).

This field displays for what functions the certificate's key can be used. For example, “DigitalSignature” means that the key can be used to sign certificates and “KeyEncipherment” means that the key can be used to encrypt text.

This field displays general information about the certificate. For example, Subject Type=CA means that this is a certification authority’s certificate and “Path Length Constraint=1” means that there can only be one certification authority in the certificate's path.

This is the certificate's message digest that the ZyXEL Device calculated using the MD5 algorithm.

This is the certificate's message digest that the ZyXEL Device calculated using the SHA algorithm.

Certificate in PEM (Base-64) Encoded Format

This read-only text box displays the certificate or certification request in Privacy Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the binary certificate into a printable form.

You can copy and paste a certification request into a certification authority's web page, an e-mail that you send to the certification authority or a text editor and save the file on a management computer for later manual enrollment.

You can copy and paste a certificate into an e-mail to send to friends or colleagues or you can copy and paste a certificate into a text editor and save the file on a management computer for later distribution (via floppy disk for example).

Apply Click Apply to save your changes back to the ZyXEL Device. You can only change the name, except in the case of a self-signed certificate, which you can also set to be the default self-signed certificate that signs the imported trusted remote host certificates.

Cancel Click Cancel to quit and return to the My Certificates screen.

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11.7 My Certificate Export

Click SECURITY > CERTIFICATES > My Certificates and then a certificate’s export icon to open the My Certificate Export screen. Follow the instructions in this screen to choose the file format to use for saving the certificate from the ZyXEL Device to a computer.

11.7.1 Certificate File Export Formats

You can export a certificate in one of these file formats:

+ Binary X.509: This is an ITU-T recommendation that defines the formats for X.509 certificates.

Binary PKCS#12: This is a format for transferring public key and private key certificates. The private key in a PKCS #12 file is within a password-encrypted envelope. The file’s password is not connected to your certificate’s public or private passwords. Exporting a PKCS #12 file creates this and you must provide it to decrypt the contents when you import the file into the ZyXEL Device.

Figure 123 SECURITY > CERTIFICATES > My Certificates > Export

Please specify whether to export the certificate along with the corresponding private key.

Export the certificate in binary X.509 format.

Export the certificate along with the corresponding private key in PKCS+#12 format. For security concern, you may provide a password to protect the private key.

The following table describes the labels in this screen. Table 53 SECURITY > CERTIFICATES > My Certificates > Export

LABEL DESCRIPTION Export the certificate in | Binary X.509 is an ITU-T recommendation that defines the formats for X.509 binary X.509 format. certificates.

Export the certificate PKCS#12 is a format for transferring public key and private key certificates. along with the You can also password-encrypt the private key in the PKCS #12 file. The corresponding private file's password is not connected to your certificate's public or private

key in PKCS#12 format. | passwords.

Password Type the file's password to use for encrypting the private key. The password is optional, although you must specify one if you want to be able to import the PKCS#12 format certificate into Netscape version 7.2.

Retype to confirm Type the password to make sure that you have entered it correctly.

Apply Click Apply and then Save in the File Download screen. The Save As screen opens, browse to the location that you want to use and click Save.

Cancel Click Cancel to quit and return to the My Certificates screen.

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11.8 My Certificate Import

Click SECURITY > CERTIFICATES > My Certificates and then Import to open the My Certificate Import screen. Follow the instructions in this screen to save an existing certificate from a computer to the ZyXEL Device.

EE You can only import a certificate that matches a corresponding certification request that was generated by the ZyXEL Device (the certification request contains the private key). The certificate you import replaces the corresponding request in the My Certificates screen.

One exception is that you can import a PKCS#12 format certificate without a corresponding certification request since the certificate includes the private key.

paf You must remove any spaces from the certificate’s filename before you can import it.

11.8.1 Certificate File Formats

The certification authority certificate that you want to import has to be in one of these file formats:

+ Binary X.509: This is an ITU-T recommendation that defines the formats for X.509 certificates.

+ PEM (Base-64) encoded X.509: This Privacy Enhanced Mail format uses 64 ASCII characters to convert a binary X.509 certificate into a printable form.

+ Binary PKCS#7: This is a standard that defines the general syntax for data (including digital signatures) that may be encrypted. The ZyXEL Device currently allows the importation of a PKS#7 file that contains a single certificate.

+ PEM (Base-64) encoded PKCS#7: This Privacy Enhanced Mail (PEM) format uses 64 ASCII characters to convert a binary PKCS#7 certificate into a printable form.

+ Binary PKCS#12: This is a format for transferring public key and private key certificates. The private key in a PKCS #12 file is within a password-encrypted envelope. The file’s password is not connected to your certificate’s public or private passwords. Exporting a PKCS #12 file creates this and you must provide it to decrypt the contents when you import the file into the ZyXEL Device.

Æ Be careful to not convert a binary file to text during the transfer process. lt is easy for this to occur since many programs use text files by default.

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Table 54 SECURITY > CERTIFICATES > My Certificates > Import

LABEL DESCRIPTION File Path | Type in the location of the file you want to upload in this field or click Browse to find it.

Browse Click Browse to find the certificate file you want to upload. Apply Click Apply to save the certificate on the ZyXEL Device.

Cancel Click Cancel to quit and return to the My Certificates screen.

When you import a binary PKCS#12 format certificate, another screen displays for you to enter the password.

Figure 125 SECURITY > CERTIFICATES > My Certificates > Import: PKCS#12

CERTIFICATES - MY CERTIFICATE - IMPORT PKCS#12 Import

The following table describes the labels in this screen.

Table 55 SECURITY > CERTIFICATES > My Certificates > Import: PKCS#12

LABEL DESCRIPTION Password | Type the file's password that was created when the PKCS #12 file was exported. Apply Click Apply to save the certificate on the ZyXEL Device.

Cancel Click Cancel to quit and return to the My Certificates screen.

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11.9 My Certificate Create

Click SECURITY > CERTIFICATES > My Certificates > Create to open the My Certificate Create screen. Use this screen to have the ZyXEL Device create a self-signed certificate, enroll a certificate with a certification authority or generate a certification request.

Chapter 11 Certificates

Type up to 31 ASCII characters (not including spaces) to identify this certificate.

Use these fields to record information that identifies the owner of the certificate. You do not have to fill in every field, but the Common Name is mandatory if you click << Basic. The certification authority may add fields (such as a serial number) to the subject information when it issues a certificate. It is recommended that each certificate have unique subject information.

The fields below display when you click << Basic.

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Table 56 SECURITY > CERTIFICATES > My Certificates > Create (continued)

LABEL DESCRIPTION Common Name Select a radio button to identify the certificate’s owner by IP address, domain name or e-mail address. Type the IP address (in dotted decimal notation), domain name or e-mail address in the field provided. The domain name or e- mail address can be up to 31 ASCII characters. The domain name or e-mail address is for identification purposes only and can be any string.

Organizational Unit Type up to 63 characters to identify the organizational unit or department to which the certificate owner belongs. You may use any character, including spaces, but the ZyXEL Device drops trailing spaces.

Organization Type up to 63 characters to identify the company or group to which the certificate owner belongs. You may use any character, including spaces, but the ZyXEL Device drops trailing spaces.

Country Type up to 63 characters to identify the nation where the certificate owner is located. You may use any character, including spaces, but the ZyXEL Device drops trailing spaces.

The fields below display when you click Advanced >>.

Subject Name You must configure at least one of these fields.

Select an item from the drop-down list box and enter the corresponding information in the field to the right.

SN (serial number) - select this and enter the certificate's identification number, such as the ZyXEL Device's MAC address. You can use up to 63 characters.

CN (common name) - select this and enter a name to identify the owner ofthe certificate. You can use up to 63 characters.

OU (organizational unit) - select this and enter a unit within the organization to identify the owner of the certificate. You can use up to 63 characters.

© (organization) - select this and enter an organization to identify the owner of the certificate. You can use up to 63 characters.

DC (domain component) - select this and enter the domain component of a domain to identify the owner of the certificate. For example, if the domain is zyxel.com, the domain component is “zyxel” or “com”. You can use up to 63 characters.

L (locality name) - select this and enter the place where the owner of the certificate resides, such as a city or county. You can use up to 63 characters. ST (state or province name) - select this and enter the state or province in which the owner of the certificate resides. You can use up to 63 characters.

C (country) - select this and enter the name of the country at which the owner of the certificate resides. You can use up to 63 characters. unstructuredName (PKCS 9 unname) - select this and enter the name of the owner of the certificate as an unstructured ASCII string. You can use up to 63 characters. Check with the certificate's issuing certification authority for their interpretation in this field if you select to apply to a certification authority for a certificate.

unstructuredAddress (PKCS 9 unaddfr) - select this and enter the address of the owner of the certificate as an unstructured ASCII string. You can use up to 63 characters. Check with the certificate's issuing certification authority for their interpretation in this field if you select to apply to a certification authority for a certificate.

MAILTO (PKCS 9 email address) - select this and enter the email address of the owner of the certificate. You can use up to 63 characters. Check with the certificate's issuing certification authority for their interpretation in this field if you select to apply to a certification authority for a certificate.

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Table 56 SECURITY > CERTIFICATES > My Certificates > Create (continued)

Select a radio button to identify the certificate's owner by IP address, domain name or e-mail address. Type the IP address (in dotted decimal notation), domain name or e-mail address in the field provided. The domain name or e- mail address can be up to 31 ASCII characters. The domain name or e-mail address is for identification purposes only and can be any string.

Select a number from the drop-down list box to determine how many bits the key should use (512 to 2048). The longer the key, the more secure it is. A longer key also uses more PKI storage space.

<< Basic/Advanced >>

Click << Basic to configure basic subject information. Click Advanced >> to configure more subject information for a certificate.

These radio buttons deal with how and when the certificate is to be generated.

Create a self-signed certificate

Select Create a self-signed certificate to have the ZyXEL Device generate the certificate and act as the Certification Authority (CA) itself. This way you do not need to apply to a certification authority for certificates.

Create a certification request and save it locally for later manual enrollment

Select Create a certification request and save it locally for later manual enrollment to have the ZyXEL Device generate and store a request for a certificate. Use the My Certificate Details screen to view the certification request and copy it to send to the certification authority.

Copy the certification request from the My Certificate Details screen (see Section 11.6 on page 200) and then send it to the certification authority.

Create a certification request and enroll for a certificate immediately online

Select Create a certification request and enroll for a certificate immediately online to have the ZyXEL Device generate a request for a certificate and apply to a certification authority for a certificate.

You must have the certification authority's certificate already imported in the Trusted CAs screen.

When you select this option, you must select the certification authority's enrollment protocol and the certification authority's certificate from the drop- down list boxes and enter the certification authority's server address. You also need to fill in the Reference Number and Key if the certification authority requires them.

Select the certification authority's enrollment protocol from the drop-down list box.

Simple Certificate Enrollment Protocol (SCEP) is a TCP-based enrollment protocol that was developed by VeriSign and Cisco.

Certificate Management Protocol (CMP) is a TCP-based enrollment protocol that was developed by the Public Key Infrastructure X.509 working group of the Internet Engineering Task Force (IETF) and is specified in RFC 2510.

Enter the IP address (or URL) of the certification authority server.

Select the certification authority's certificate from the CA Certificate drop- down list box. You must have the certification authority's certificate already imported in the Trusted CAs screen. Click Trusted CAs to go to the Trusted CAs screen where you can view (and manage) the ZyXEL Device's list of certificates of trusted certification authorities.

Enrollment via an RA If you select Create a certification request and enroll for a certificate immediately online, you can select this option to apply for a certificate through a RA (Registration Authority). The RA is an intermediary authorized by a CA to verify each subscriber's identity and forward the requests to the CA. After the CA signs and issues the certificates, the RA distributes the certificates to the subscribers.

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Table 56 SECURITY > CERTIFICATES > My Certificates > Create (continued)

LABEL DESCRIPTION RA Signing Certificate | lf you select Enrollment via an RA, select the CA's RA signing certificate from the drop-down list box. You must have the certificate already imported in the Trusted CAs screen.

Click Trusted CAs to go to the Trusted CAs screen where you can view (and manage) the ZyXEL Device's list of certificates of trusted certification

authorities. RA Encryption If you select Enrollment via an RA, select the CA's RA encryption certificate Certificate from the drop-down list box. You must have the certificate already imported in

the Trusted CAs screen.

Click Trusted CAs to go to the Trusted CAs screen where you can view (and manage) the ZyXEL Device's list of certificates of trusted certification

authorities. Request When you select Create a certification request and enroll for a certificate Authentication immediately online, the certification authority may want you to include a

reference number and key to identify you when you send a certification request. Fill in both the Reference Number and the Key fields if your certification authority uses CMP enrollment protocol. Just fill in the Key field if your certification authority uses the SCEP enrollment protocol.

Reference Number Enter the reference number that the certification authority gave you. You can use up to 31 ASCII printable characters. Spaces are allowed.

Key Type the key that the certification authority gave you. You can use up to 31 ASCII printable characters. Spaces are allowed.

Apply Click Apply to begin certificate or certification request generation.

Cancel Click Cancel to quit and return to the My Certificates screen.

After you click Apply in the My Certificate Create screen, you see a screen that tells you the ZyXEL Device is generating the self-signed certificate or certification request.

After the ZyXEL Device successfully enrolls a certificate or generates a certification request or a self-signed certificate, you see a screen with a Return button that takes you back to the My Certificates screen.

If you configured the My Certificate Create screen to have the ZyXEL Device enroll a certificate and the certificate enrollment is not successful, you see a screen with a Return button that takes you back to the My Certificate Create screen. Click Return and check your information in the My Certificate Create screen. Make sure that the certification authority information is correct and that your Internet connection is working properly if you want the ZyXEL Device to enroll a certificate online.

Click SECURITY > CERTIFICATES > Trusted CAs to open the Trusted CAs screen. This screen displays a summary list of certificates of the certification authorities that you have set the ZyXEL Device to accept as trusted. The ZyXEL Device accepts any valid certificate signed by a certification authority on this list as being trustworthy; thus you do not need to import any certificate that is signed by one of these certification authorities.

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Figure 128 SECURITY > CERTIFICATES > Trusted CAs

My Certificates | Trusted CAs ste

PKI Storage Space in Use

Trusted CA Certificates

QE Se TE GS fe ee ÉRIC ]

OU=Secure OU=Secure Server | Server Certification Certification | 1994 Nov 2010 Jan 7th, Verisign.cer | Authority, O=RSA | Authority, th, 00:00:00! 23:59:59 | No (©) E Data Security\, Inc.,| O=RSA Data GNT GNT = Security\, Inc, C=uS Import | _Retresh The following table describes the labels in this screen. Table 57 SECURITY > CERTIFICATES > Trusted CAs LABEL DESCRIPTION PKI Storage This bar displays the percentage of the ZyXEL Device's PKI storage space that is Space in Use currently in use. When the storage space is almost full, you should consider deleting expired or unnecessary certificates before adding more certificates. # This field displays the certificate index number. The certificates are listed in alphabetical order. Name This field displays the name used to identify this certificate. Subject This field displays identifying information about the certificate’s owner, such as CN

(Common Name), OÙ (Organizational Unit or department), O (Organization or company) and C (Country). lt is recommended that each certificate have unique subject information.

Issuer This field displays identifying information about the certificate's issuing certification authority, such as a common name, organizational unit or department, organization or company and country. With self-signed certificates, this is the same information as in the Subject field.

Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.

Valid To This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.

CRL Issuer This field displays Yes if the certification authority issues CRL (Certificate Revocation Lists) for the certificates that it has issued and you have selected the- Check incoming certificates issued by this CA against a CRL check box in the certificate's details screen to have the ZyXEL Device check the CRL before trusting any certificates issued by the certification authority. Otherwise the field displays No.

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SECURITY > CERTIFICATES > Trusted CAs (continued)

LABEL DESCRIPTION Modify

Click the details icon to open a screen with an in-depth list of information about the certificate.

Use the export icon to save the certificate to a computer. Click the icon and then Save in the File Download screen. The Save As screen opens, browse to the location that you want to use and click Save.

Click the delete icon to remove the certificate. A window displays asking you to confirm that you want to delete the certificates. Note that subsequent certificates move up by one when you take this action.

Click Import to open a screen where you can save the certificate of a certification authority that you trust, from your computer to the ZyXEL Device.

Click this button to display the current validity status of the certificates.

11.11 Trusted CA Details

Click SECURITY > CERTIFICATES > Trusted CAs to open the Trusted CAs screen. Click the details icon to open the Trusted CA Details screen. Use this screen to view in-depth information about the certification authority’s certificate, change the certificate’s name and set whether or not you want the ZyXEL Device to check a certification authority’s list of revoked certificates before trusting a certificate issued by the certification authority.

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Certificate in PEM (Base-64) Encoded Format

INTICNDCCAGECEAK ZnSOR£SeV288mB Le3cAUDOYUKOZIhvcNAOECEQAWXZELMAKG A LUEBNNCVVIX ID A8BGNVBAOTF 11 TOSBEYXRRIFN1Y3VyaXRSLCBJINUMS AuLAYD QQLE UT ZWN1EmUQU2V ei y TEN Len Rp Zm1 j YXRpb2 490XVOaG9yaXRSMBAXDTKO MTEVOTAUMD AUNFOXDTEUMDEUNZIZNTk10VoOUXzELMAKGA1UEBRMCYVMx IDAEBQNV BAOTF1JTOSBEYXRHIFN1Y3VyaXRSLCBUbHMUMS UL A YDVOQLEYUTZUN1CmUQU2Vy any TEN1CnRp Zm1 3 YXRph24g0XVOaG9yaXRSMIGHMAOGCSAGS Ib3DOEB AQUAAAGI ADCBhOI+AJLOeSGugzSagomDV6WLAXYNrASOLD£O62V4ZFODSYRAUCM/ jwJ110II (OhaGN1XpsSECrXZog20FokvISyVmI 1231 eP94FZbYQHZXATCXY+m3dM41CJVphI

uR2nKROTLKORUZWEFAVIVCxzOmmCsZCSnG1u20 3 1353 UyBS7AGMBAREUDOYUKOZI F TRUSTED CA - DETAILS

[OU=Secure Server Certification Authority, O=RSA Data Security\ 2]

The following table describes the labels in this screen. Table 58 SECURITY > CERTIFICATES > Trusted CAs > Details

Check incoming certificates issued by this CA against a

CRL LABEL DESCRIPTION Name This field displays the identifying name of this certificate. If you want to change the name, type up to 31 characters to identify this key certificate. You may use any character (not including spaces).

Property Select this check box to have the ZyXEL Device check incoming certificates that

are issued by this certification authority against a Certificate Revocation List (CRL).

Clear this check box to have the ZyXEL Device not check incoming certificates that are issued by this certification authority against a Certificate Revocation List (CRL).

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Table 58 SECURITY > CERTIFICATES > Trusted CAs > Details (continued)

LABEL DESCRIPTION Certification Path Click the Refresh button to have this read-only text box display the end entity's certificate and a list of certification authority certificates that shows the hierarchy of certification authorities that validate the end entity's certificate. If the issuing certification authority is one that you have imported as a trusted certification authority, it may be the only certification authority in the list (along with the end entity's own certificate). The ZyXEL Device does not trust the end entity's certificate and displays “Not trusted” in this field if any certificate on the path has expired or been revoked.

Refresh Click Refresh to display the certification path.

Certificate These read-only fields display detailed information about the certificate. Information

Type This field displays general information about the certificate. CA-signed means

that a Certification Authority signed the certificate. Self-signed means that the certificate's owner signed the certificate (not a certification authority). X.509 means that this certificate was created and signed according to the ITU-T X.509 recommendation that defines the formats for public-key certificates.

Version This field displays the X.509 version number.

Serial Number This field displays the certificate's identification number given by the certification authority.

Subject This field displays information that identifies the owner of the certificate, such as Common Name (CN), Organizational Unit (OU), Organization (O0) and Country (C).

Issuer This field displays identifying information about the certificate's issuing

certification authority, such as Common Name, Organizational Unit, Organization and Country.

With self-signed certificates, this is the same information as in the Subject Name field.

Signature Algorithm | This field displays the type of algorithm that was used to sign the certificate. Some certification authorities use rsa-pkcs1-sha1 (RSA public-private key encryption algorithm and the SHA1 hash algorithm). Other certification authorities may use rsa-pkcs1-md5 (RSA public-private key encryption algorithm and the MD5 hash algorithm).

Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.

Valid To This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.

Key Algorithm This field displays the type of algorithm that was used to generate the certificate's key pair (the ZyXEL Device uses RSA encryption) and the length of the key set in bits (1024 bits for example).

Subject Alternative | This field displays the certificate's owner's IP address (IP), domain name (DNS) Name or e-mail address (EMAIL).

Key Usage This field displays for what functions the certificate's key can be used. For example, “DigitalSignature” means that the key can be used to sign certificates and “KeyEncipherment” means that the key can be used to encrypt text.

Basic Constraint This field displays general information about the certificate. For example, Subject Type=CA means that this is a certification authority's certificate and “Path Length Constraint=1” means that there can only be one certification authority in the certificate's path.

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Table 58 SECURITY > CERTIFICATES > Trusted CAs > Details (continued)

LABEL DESCRIPTION CRL Distribution Points

This field displays how many directory servers with Lists of revoked certificates the issuing certification authority of this certificate makes available. This field also displays the domain names or IP addresses of the servers.

This is the certificate's message digest that the ZyXEL Device calculated using the MD5 algorithm. You can use this value to verify with the certification authority (over the phone for example) that this is actually their certificate.

This is the certificate's message digest that the ZyXEL Device calculated using the SHA algorithm. You can use this value to verify with the certification authority (over the phone for example) that this is actually their certificate.

Certificate in PEM (Base-64) Encoded Format

This read-only text box displays the certificate or certification request in Privacy Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the binary certificate into a printable form.

You can copy and paste the certificate into an e-mail to send to friends or colleagues or you can copy and paste the certificate into a text editor and save the file on a management computer for later distribution (via floppy disk for example).

Apply Click Apply to save your changes back to the ZyXEL Device. You can only change the name and/or set whether or not you want the ZyXEL Device to check the CRL that the certification authority issues before trusting a certificate issued by the certification authority.

Cancel Click Cancel to quit and return to the Trusted CAs screen.

11.12 Trusted CA Import

Click SECURITY > CERTIFICATES > Trusted CAs to open the Trusted CAs screen and then click Import to open the Trusted CA Import screen. Follow the instructions in this screen to save a trusted certification authority’ certificate from a computer to the ZyXEL Device. The ZyXEL Device trusts any valid certificate signed by any of the imported trusted

You must remove any spaces from the certificate’s filename before you can import the certificate.

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Chapter 11 Certificates

Figure 130 SECURITY > CERTIFICATES > Trusted CAs > Import

Please specify the location of the certificate file to be imported. The certificate file must be in one of the following formats.

The following table describes the labels in this screen. Table 59 SECURITY > CERTIFICATES > Trusted CAs Import

LABEL DESCRIPTION File Path Type in the location of the file you want to upload in this field or click Browse to find it.

Browse Click Browse to find the certificate file you want to upload. Apply Click Apply to save the certificate on the ZyXEL Device. Cancel Click Cancel to quit and return to the Trusted CAs screen.

11.13 Trusted Remote Hosts

Click SECURITY > CERTIFICATES > Trusted Remote Hosts to open the Trusted Remote Hosts screen. This screen displays a list of the certificates of peers that you trust but which are not signed by one of the certification authorities on the Trusted CAs screen.

You do not need to add any certificate that is signed by one of the certification authorities on the Trusted CAs screen since the ZyXEL Device automatically accepts any valid certificate signed by a trusted certification authority as being trustworthy.

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PKI Storage Space in Use

Trusted Remote Host Certificates Issuer (My Default Self-signed Certificate): CN=NBG410W3G Factory Default Certificate

Trusted cas | Trusted Remote biectory Servers Hosts

The following table describes the labels in this screen. Table 60 SECURITY > CERTIFICATES > Trusted Remote Hosts

LABEL DESCRIPTION PKI Storage This bar displays the percentage of the ZyXEL Device's PKI storage space that is

Space in Use currently in use. When the storage space is almost full, you should consider deleting expired or unnecessary certificates before adding more certificates.

Issuer (My Default | This field displays identifying information about the default self-signed certificate

Self-signed on the ZyXEL Device that the ZyXEL Device uses to sign the trusted remote host

Certificate) certificates.

# This field displays the certificate index number. The certificates are listed in alphabetical order.

Name This field displays the name used to identify this certificate.

Subject This field displays identifying information about the certificate's owner, such as CN (Common Name), OÙ (Organizational Unit or department), O (Organization or company) and C (Country). It is recommended that each certificate have unique subject information.

Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.

Valid To This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.

Modify Click the details icon to open a screen with an in-depth list of information about the certificate.

Use the export icon to save the certificate to a computer. Click the icon and then Save in the File Download screen. The Save As screen opens, browse to the location that you want to use and click Save.

Click the delete icon to remove the certificate. A window displays asking you to confirm that you want to delete the certificate. Note that subsequent certificates move up by one when you take this action.

Import Click Import to open a screen where you can save the certificate of a remote host (which you trust) from your computer to the ZyXEL Device.

Refresh Click this button to display the current validity status of the certificates.

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Chapter 11 Certificates

11.14 Trusted Remote Hosts Import

Click SECURITY > CERTIFICATES > Trusted Remote Hosts to open the Trusted Remote Hosts screen and then click Import to open the Trusted Remote Host Import screen.

You may have peers with certificates that you want to trust, but the certificates were not signed by one of the certification authorities on the Trusted CAs screen. Follow the instructions in this screen to save a peer’s certificates from a computer to the ZyXEL Device.

You do not need to add any certificate that is signed by one of the certification authorities on the Trusted CAs screen since the ZyXEL Device automatically accepts any valid certificate signed by a trusted certification authority as being trustworthy.

Æ The trusted remote host certificate must be a self-signed certificate; and you must remove any spaces from its filename before you can import it.

Figure 132 SECURITY > CERTIFICATES > Trusted Remote Hosts > Import

Please specify the location of the certificate file to be imported. The certificate file must be in one ofthe following formats,

File Path: Browse. |

The following table describes the labels in this screen. Table 61 SECURITY > CERTIFICATES > Trusted Remote Hosts > Import

LABEL DESCRIPTION File Path | Type in the location of the file you want to upload in this field or click Browse to find it.

Browse Click Browse to find the certificate file you want to upload. Apply Click Apply to save the certificate on the ZyXEL Device. Cancel Click Cancel to quit and return to the Trusted Remote Hosts screen.

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11.15 Trusted Remote Host Certificate Details

Click SECURITY > CERTIFICATES > Trusted Remote Hosts to open the Trusted Remote Hosts screen. Click the details icon to open the Trusted Remote Host Details screen. You can use this screen to view in-depth information about the trusted remote host’s certificate and/or change the certificate’s name.

e in PEM (Base-64) Encoded Format

—-BEGIN CERTIFICATE-—- MIIBS2ZCCAV2gAwWIBAgGIFGHZLQWEWDOYJKOZIhvcNAQEFBOAWMTEVMCOGALUEAxMrm [n1LXQUXMIDJXRYBGYUNOb3JSIER1 ZmF 1bH0gQ2V ydG LmaWNhAGUWHRCNMDMWNDES [MD QwN zMx Wh©NMD YwNDE 3 MDQwNzMxW 3j ASMRAWDYYDVOQDEwAWaAWS j ZWSOMIGÉMAOG (CS46S TH3DOFBAQUALAGNADCE 1 OKBgQCD jts73SPybRFVuhOieofPP-G6aquajuk1 k/Nlqgryp&vomLBKarROaB8DSSp7TVSY2PrAOKs=kKucQNruXz9S2zS6kqLITHEYIZY leoytvc67GM/3AQgCOLbutRSqH1lKa7EsQCxvOkNvAcHI20FABneOMMFctejt IqhU tkU1OAGNTWIDAQABOzZCwNTALBgNVHOSEBAMCAOQWEgYDVRORBASuCYIHVmLuY2Vu [AD ASBgNVHRMBAQAECDAGAQE AAGEKMAOGCSqGS Ib3DOEBBQUAAOEARzZwWMÉÉGRx6xÀ | yrkSASTeXTOOUMCVYUIBXS£2083 72L3x415C 208 jamMEx749CaT+25€ yRUCXNUO |»

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The following table describes the labels in this screen. Table 62 SECURITY > CERTIFICATES > Trusted Remote Hosts > Details

LABEL DESCRIPTION Name This field displays the identifying name of this certificate. If you want to change the name, type up to 31 characters to identify this key certificate. You may use any character (not including spaces).

Certification Path Click the Refresh button to have this read-only text box display the end entity's own certificate and a list of certification authority certificates in the hierarchy of certification authorities that validate a certificate’s issuing certification authority. For a trusted host, the list consists of the end entity's own certificate and the default self-signed certificate that the ZyXEL Device uses to sign remote host

Refresh Click Refresh to display the certification path.

Certificate These read-only fields display detailed information about the certificate.

Type This field displays general information about the certificate. With trusted remote host certificates, this field always displays CA-signed. The ZyXEL Device is the Certification Authority that signed the certificate. X.509 means that this certificate was created and signed according to the ITU-T X.509 recommendation that defines the formats for public-key certificates.

Version This field displays the X.509 version number.

Serial Number This field displays the certificate’s identification number given by the device that created the certificate.

Subject This field displays information that identifies the owner of the certificate, such as Common Name (CN), Organizational Unit (OU), Organization (O) and Country (C).

Issuer This field displays identifying information about the default self-signed

certificate on the ZyXEL Device that the ZyXEL Device uses to sign the trusted remote host certificats.

Signature Algorithm | This field displays the type of algorithm that the ZyXEL Device used to sign the certificate, which is rsa-pkcs1-sha1 (RSA public-private key encryption algorithm and the SHA1 hash algorithm).

Valid From This field displays the date that the certificate becomes applicable. The text displays in red and includes a Not Yet Valid! message if the certificate has not yet become applicable.

Valid To This field displays the date that the certificate expires. The text displays in red and includes an Expiring! or Expired! message if the certificate is about to expire or has already expired.

Key Algorithm This field displays the type of algorithm that was used to generate the certificate's key pair (the ZyXEL Device uses RSA encryption) and the length of the key set in bits (1024 bits for example).

Subject Alternative This field displays the certificate's owner's IP address (IP), domain name Name (DNS) or e-mail address (EMAIL).

Key Usage This field displays for what functions the certificate's key can be used. For example, “DigitalSignature” means that the key can be used to sign certificates and “KeyEncipherment” means that the key can be used to encrypt text.

Basic Constraint This field displays general information about the certificate. For example, Subject Type=CA means that this is a certification authority's certificate and “Path Length Constraint=1” means that there can only be one certification authority in the certificate's path.

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Table 62 SECURITY > CERTIFICATES > Trusted Remote Hosts > Details (continued)

LABEL DESCRIPTION MD5 Fingerprint This is the certificate's message digest that the ZyXEL Device calculated using the MD5 algorithm. The ZyXEL Device uses one of its own self-signed certificates to sign the imported trusted remote host certificates. This changes the fingerprint value displayed here (so it does not match the original). See Section 11.3 on page 196 for how to verify a remote host's certificate before you import it into the ZyXEL Device.

SHA Fingerprint This is the certificate's message digest that the ZyXEL Device calculated using the SHA1 algorithm. The ZyXEL Device uses one of its own self-signed certificates to sign the imported trusted remote host certificates. This changes the fingerprint value displayed here (so it does not match the original). See Section 11.3 on page 196 for how to verify a remote host's certificate before you import it into the ZyXEL Device.

Certificate in PEM This read-only text box displays the certificate or certification request in Privacy (Base-64) Encoded Enhanced Mail (PEM) format. PEM uses 64 ASCII characters to convert the Format binary certificate into a printable form.

You can copy and paste the certificate into an e-mail to send to friends or colleagues or you can copy and paste the certificate into a text editor and save the file on a management computer for later distribution (via floppy disk for example).

Apply Click Apply to save your changes back to the ZyXEL Device. You can only change the name of the certificate.

Cancel Click Cancel to quit configuring this screen and return to the Trusted Remote Hosts screen.

11.16 Directory Servers

Click SECURITY > CERTIFICATES > Directory Servers to open the Directory Servers screen. This screen displays a summary list of directory servers (that contain lists of valid and revoked certificates) that have been saved into the ZyXEL Device. If you decide to have the ZyXEL Device check incoming certificates against the issuing certification authority’s list of revoked certificates, the ZyXEL Device first checks the server(s) listed in the CRL Distribution Points field of the incoming certificate. If the certificate does not list a server or the listed server is not available, the ZyXEL Device checks the servers listed here.

Chapter 11 Certificates

The following table describes the labels in this screen. Table 63 SECURITY > CERTIFICATES > Directory Servers

LABEL DESCRIPTION PKI Storage This bar displays the percentage of the ZyXEL Device's PKI storage space that is

Space in Use currently in use. When the storage space is almost full, you should consider deleting expired or unnecessary certificates before adding more certificates.

# The index number of the directory server. The servers are listed in alphabetical order.

Name This field displays the name used to identify this directory server.

Address This field displays the IP address or domain name of the directory server.

Port This field displays the port number that the directory server uses.

Protocol This field displays the protocol that the directory server uses.

Modify Click the details icon to open a screen where you can change the information about the directory server. Click the delete icon to remove the directory server entry. À window displays asking you to confirm that you want to delete the directory server. Note that subsequent certificates move up by one when you take this action.

Add Click Add to open a screen where you can configure information about a directory server so that the ZyXEL Device can access it.

11.17 Directory Server Add or Edit

screen. Click Add (or the details icon) to open the Directory Server Add screen. Use this

information about a directory server that the ZyXEL Device can access.

Figure 135 SECURITY > CERTIFICATES > Directory Server > Add

Directory Service Setting

Name Type up to 31 ASCII characters (spaces are not permitted) to identify this

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Table 64 SECURITY > CERTIFICATES > Directory Server > Add

LABEL DESCRIPTION Access Protocol Use the drop-down list box to select the access protocol used by the directory server. LDAP (Lightweight Directory Access Protocol) is a protocol over TCP that specifies how clients access directories of certificates and lists of revoked certificates.À

Server Address Type the IP address (in dotted decimal notation) or the domain name of the directory server.

Server Port This field displays the default server port number of the protocol that you select in the Access Protocol field. You may change the server port number if needed, however you must use the same server port number that the directory server uses. 389 is the default server port number for LDAP.

Login The ZyXEL Device may need to authenticate itself in order to assess the directory server. Type the login name (up to 31 ASCII characters) from the entity maintaining the directory server (usually a certification authority).

Password Type the password (up to 31 ASCII characters) from the entity maintaining the directory server (usually a certification authority).

Apply Click Apply to save your changes back to the ZyXEL Device.

Cancel Click Cancel to quit configuring this screen and return to the Directory Servers screen.

A. Atthe time of writing,

LDAP is the only choice of directory server access protocol

NBG410W36G Series Users Guide

This chapter discusses how to configure NAT on the ZyXEL Device.

NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet. For example, the source address of an outgoing packet, used within one network is changed to a different IP address known within another network.

12.1.1 NAT Definitions

Inside/outside denotes where a host is located relative to the ZyXEL Device. For example, the computers of your subscribers are the inside hosts, while the web servers on the Internet are the outside hosts.

Global/local denotes the IP address of a host in a packet as the packet traverses a router. For example, the local address refers to the IP address of a host when the packet is in the local network, while the global address refers to the IP address of the host when the same packet is traveling in the WAN side.

Note that inside/outside refers to the location of a host, while global/local refers to the IP address of a host used in a packet. Thus, an inside local address (ILA) is the IP address of an inside host in a packet when the packet is still in the local network, while an inside global address (IGA) is the IP address of the same inside host when the packet is on the WAN side. The following table summarizes this information. Table 65 NAT Definitions

TERM DESCRIPTION Inside This refers to the host on the LAN.

Outside This refers to the host on the WAN.

Local This refers to the packet address (source or destination) as the packet travels on the LAN. Global This refers to the packet address (source or destination) as the packet travels on the WAN.

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Æ NAT never changes the IP address (either local or global) of an outside host.

12.1.2 What NAT Does

In the simplest form, NAT changes the source IP address in a packet received from a subscriber (the inside local address) to another (the inside global address) before forwarding the packet to the WAN side. When the response comes back, NAT translates the destination address (the inside global address) back to the inside local address before forwarding it to the original inside host. Note that the IP address (either local or global) of an outside host is never changed.

The global IP addresses for the inside hosts can be either static or dynamically assigned by the ISP. In addition, you can designate servers (for example a web server and a telnet server) on your local network and make them accessible to the outside world. Although you can make designated servers on the LAN accessible to the outside world, it is strongly recommended that you attach those servers to the DMZ port instead. If you do not define any servers (for Many-to-One and Many-to-Many Overload mapping), NAT offers the additional benefit of firewall protection. With no servers defined, your ZyXEL Device filters out all incoming inquiries, thus preventing intruders from probing your network. For more information on IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT).

12.1.3 How NAT Works

Each packet has two addresses — a source address and a destination address. For outgoing packets, the ILA (Inside Local Address) is the source address on the LAN, and the IGA (Inside Global Address) is the source address on the WAN. For incoming packets, the ILA is the destination address on the LAN, and the IGA is the destination address on the WAN. NAT maps private (local) IP addresses to globally unique ones required for communication with hosts on other networks. It replaces the original IP source address (and TCP or UDP source port numbers for Many-to-One and Many-to-Many Overload NAT mapping) in each packet and then forwards it to the Internet. The ZyXEL Device keeps track of the original addresses and port numbers so incoming reply packets can have their original values restored. The following figure illustrates this.

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Figure 136 How NAT Works

DJ The following figure illustrates a possible NAT application, where three inside LANSs (logical LANSs using IP Alias) behind the ZyXEL Device can communicate with three distinct WAN networks. More examples follow at the end of this chapter.

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Chapter 12 Network Address Translation (NAT)

Corporation B Corporation A Server in Admin Network aetstx (M [EM DÉS L— = L 4

Server in R&D Network =IP3 (IGA 3)

12.1.5 Port Restricted Cone NAT

ZyXEL Device ZyNOS version 4.00 and later uses port restricted cone NAT. Port restricted cone NAT maps all outgoing packets from an internal IP address and port to a single IP address and port on the external network. In the following example, the ZyXEL Device maps the source address of all packets sent from internal IP address 1 and port A to IP address 2 and port B on the external network. A host on the external network (IP address 3 and Port C for example) can only send packets to the internal host if the internal host has already sent a packet to the external host’s IP address and port.

A server with IP address 1 and port A sends packets to IP address 3, port € and IP address 4, port D. The ZyXEL Device changes the server”’s IP address to 2 and port to B.

Since 1, A has already sent packets to 3, C and 4, D, they can send packets back to 2, B and the ZyXEL Device will perform NAT on them and send them to the server at IP address 1, port A.

Packets have not been sent from 1, A to 4, E or 5, so they cannot send packets to 1, A.

NBG410W36G Series Users Guide

12.1.6 NAT Mapping Types

NAT supports five types of IP/port mapping. They are:

+ One to One: In One-to-One mode, the ZyXEL Device maps one local IP address to one global IP address.

+ Many to One: In Many-to-One mode, the ZyXEL Device maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature (the SUA option).

+ Many to Many Overload: In Many-to-Many Overload mode, the ZyXEL Device maps the multiple local IP addresses to shared global IP addresses.

+ Many One to One: In Many-One-to-One mode, the ZyXEL Device maps each local IP address to a unique global IP address.

+ Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world althougph, it is highly recommended that you use the DMZ port for these servers instead.

paf Port numbers do not change for One-to-One and Many-One-to-One NAT mapping types.

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The following table summarizes the NAT mapping types. Table 66 NAT Mapping Types

TYPE IP MAPPING One-to-One ILAT <> IGA1

Many-to-One (SUA/PAT) ILAT ++ IGA1 ILA2 <> IGA1

Many-to-Many Overload ILA ++ IGA1

Many-One-to-One ILAT ++ IGA1 ILA2 <> IGA2 ILA3 <> IGA3

Server Server 1 IP + IGA1 Server 2 IP ++ IGA1 Server 3 IP ++ IGA1

12.2 Using NAT EE You must create a firewall rule in addition to setting up SUA/NAT, to allow

traffic from the WAN to be forwarded through the ZyXEL Device.

12.2.1 SUA (Single User Account) Versus NAT SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types of mapping, Many-to-One and Server. The ZyXEL Device also supports Full Feature NAT to map multiple global IP addresses to multiple private LAN IP addresses of clients or servers using mapping types. Select either SUA or Full Feature in NAT Overview.

Selecting SUA means (latent) multiple WAN-to-LAN and WAN-to-DMZ address translation. That means that computers on your DMZ with public IP addresses will still have to undergo NAT mapping if you're using SUA NAT mapping. If this is not your intention, then select Full Feature NAT and don't configure NAT mapping rules to those computers with public IP addresses on the DMZ.

12.3 NAT Overview Screen

Click ADVANCED > NAT to open the NAT Overview screen.

Max. Concurrent Sessions 1000 Max. Concurrent Sessions Per Host frooo CHistorical high since last startup: 118) WAN Operation Mode Active/Passive Fail Over

M Enable NAT Address Mapping Rules

(°° Full Feature Port Forwarding Rules

Port Triggering Rules

Address Mapping Port Forwarding Port Triggering

The following table describes the labels in this screen. Table 67 ADVANCED > NAT > NAT Overview

LABEL DESCRIPTION Global Settings

Max. This read-only field displays the highest number of NAT sessions that the ZyXEL Concurrent Device will permit at one time.

Max. Use this field to set the highest number of NAT sessions that the ZyXEL Device will

Concurrent permit a host to have at one time.

WAN Operation | This read-only field displays the operation mode of the ZyXEL Device's WAN Mode interfaces.

Enable NAT Select this check box to turn on the NAT feature for the WAN interface. Clear this check box to turn off the NAT feature for the WAN interface.

Address Select SUA if you have just one public WAN IP address for your ZyXEL Device. This

lets the ZyXEL Device use its permanent, pre-defined NAT address mapping rules. Select Full Feature if you have multiple public WAN IP addresses for your ZyXEL Device. This lets the ZyXEL Device use the address mapping rules that you configure. This is the equivalent of what used to be called full feature NAT or multi- NAT.

The bar displays how many of the ZyXEL Device's possible address mapping rules are configured. The first number shows how many address mapping rules are configured on the ZyXEL Device. The second number shows the maximum number of address mapping rules that can be configured on the ZyXEL Device.

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Table 67 ADVANCED > NAT > NAT Overview (continued)

LABEL DESCRIPTION Port Forwarding | The bar displays how many of the ZyXEL Device's possible port forwarding rules are Rules configured. The first number shows how many port forwarding rules are configured

on the ZyXEL Device. The second number shows the maximum number of port forwarding rules that can be configured on the ZyXEL Device.

Port Triggering | The bar displays how many of the ZyXEL Device's possible trigger port rules are Rules configured. The first number shows how many trigger port rules are configured on the ZyXEL Device. The second number shows the maximum number of trigger port rules that can be configured on the ZyXEL Device.

Copy to WAN 2 | Click Copy to WAN 2 (or Copy to WAN 1) to duplicate this WAN interface's NAT (and Copy to port forwarding or trigger port rules on the other WAN interface. WAN 1)

Note: Using the copy button overwrites the other WAN interface's existing rules.

The copy button is best suited for initial NAT configuration where you have configured NAT port forwarding or trigger port rules for one interface and want to use similar rules for the other WAN interface. You can use the other NAT screens to edit the NAT rules after you copy them from one WAN interface to the other.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

12.4 NAT Address Mapping

Click ADVANCED > NAT > Address Mapping to open the following screen.

12.4.1 What NAT Does

In the simplest form, NAT changes the source IP address in a packet received from a subscriber (the inside local address) to another (the inside global address) before forwarding the packet to the WAN side. When the response comes back, NAT translates the destination address (the inside global address) back to the inside local address before forwarding it to the original inside host. Note that the IP address (either local or global) of an outside host is never changed.

See Section 12.1 on page 225 for more on NAT. Use this screen to change your ZyXEL Device’s address mapping settings.

Ordering your rules is important because the ZyXEL Device applies the rules in the order that you specify. When a rule matches the current packet, the ZyXEL Device takes the corresponding action and the remaining rules are ignored. If there are any empty rules before your new configured rule, your configured rule will be pushed up by that number of empty rules. For example, if you have already configured rules 1 to 6 in your current set and now you configure rule number 9. In the set summary screen, the new rule will be rule 7, not 9. Now if you delete rule 4, rules 5 to 7 will be pushed up by 1 rule, so old rules 5, 6 and 7 become new rules 4, 5 and 6.

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Figure 140 ADVANCED > NAT > Address Mapping

SUA Address Mapping Rules

Local Start IP_| Local EndiP | Global StartIP | Global End 1P EN coco 255.255.255,255 0.0.0.0 n/a

Address Mapping! Port Forwarding Port Triggering

N/A | N/A 0.0.0.0 | N/A Full Feature Address Mapping Rules

AN interface JAN x) Local Start IP | Local End 1P_| Global StartiP| Global End1p | Type | _Modify _|

9.0.0.0 255,255.255.255 9.0.0.0 N/A m4 F N/A N/A Inset_| new rule before rule | (rule number)

The following table describes the labels in this screen. Table 68 ADVANCED > NAT > Address Mapping

LABEL DESCRIPTION SUA Address | This read-only table displays the default address mapping rules.

WAN Interface | Select the WAN interface for which you want to view or configure address mapping rules.

# This is the rule index number.

Local Start IP | This refers to the Inside Local Address (ILA), which is the starting local IP address. If the rule is for all local IP addresses, then this field displays 0.0.0.0 as the Local Start IP address. Local IP addresses are N/A for Server port mapping.

Local End IP | This is the end Inside Local Address (ILA). If the rule is for all local IP addresses, then this field displays 255.255.255.255 as the Local End IP address. This field is N/A for One-to-One and Server mapping types.

Global Start IP | This refers to the Inside Global IP Address (IGA), that is the starting global IP address. 0.0.0.0 is for a dynamic IP address from your ISP with Many-to-One and Server mapping types.

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Table 68 ADVANCED > NAT > Address Mapping (continued)

LABEL DESCRIPTION Global End IP | This is the ending Inside Global Address (IGA). This field is N/A for One-to-One, Many-to-One and Server mapping types.

Type 1. One-to-One mode maps one local IP address to one global IP address. Note that port numbers do not change for the One-to-One NAT mapping type.

2. Many-to-One mode maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature that previous ZyXEL routers supported only.

3. Many-to-Many Overload mode maps multiple local IP addresses to shared global IP addresses.

4. Many One-to-One mode maps each local IP address to unique global IP addresses.

5. Server allows you to specify inside servers of different services behind the NAT to be accessible to the outside world.

Modify Click the edit icon to go to the screen where you can edit the address mapping rule. Click the delete icon to delete an existing address mapping rule. A window display asking you to confirm that you want to delete the address mapping rule. Note that subsequent address mapping rules move up by one when you take this action.

Insert Click Insert to insert a new mapping rule before an existing one.

12.4.2 NAT Address Mapping Edit

edit icon to display the NAT Address Mapping Edit screen. Use this screen to edit

an address mapping rule. See Section 12.1 on page 225 for information on NAT and address

Figure 141 ADVANCED > NAT > Address Mapping > Edit

Chapter 12 Network Address Translation (NAT)

The following table describes the labels in this screen. Table 69 ADVANCED > NAT > Address Mapping > Edit

LABEL DESCRIPTION Type Choose the port mapping type from one of the following.

1. One-to-One: One-to-One mode maps one local IP address to one global IP address. Note that port numbers do not change for One-to-One NAT mapping type.

2. Many-to-One: Many-to-One mode maps multiple local IP addresses to one global IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's Single User Account feature.

3. Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP addresses to shared global IP addresses.

4. Many One-to-One: Many One-to-One mode maps each local IP address to unique global IP addresses.

5. Server: This type allows you to specify inside servers of different services behind the NAT to be accessible to the outside world.

Local Start IP This is the starting Inside Local IP Address (ILA). Local IP addresses are N/A for Server port mapping.

Local End IP This is the end Inside Local IP Address (ILA). If your rule is for all local IP addresses, then enter 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local End IP address.

This field is N/A for One-to-One and Server mapping types.

Global Start IP This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a dynamic IP address from your ISP.

Global End IP This is the ending Inside Global IP Address (IGA). This field is N/A for One-to- One, Many-to-One and Server mapping types.

Apply Click Apply to save your changes.

Cancel Click Cancel to exit this screen without saving.

12.5 Port Forwarding

À port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP, that you can make visible to the outside world even though NAT makes your whole inside network appear as a single computer to the outside world.

You may enter a single port number or a range of port numbers to be forwarded, and the local IP address of the desired server. The port number identifies a service; for example, web service is on port 80 and FTP on port 21. In some cases, such as for unknown services or where one server can support more than one service (for example both FTP and web service), it might be better to specify a range of port numbers. You can allocate a server IP address that corresponds to a port or a range of ports.

Many residential broadband ISP accounts do not allow you to run any server processes (such as a Web or FTP server) from your location. Your ISP may periodically check for servers and may suspend your account if it discovers any active services at your location. If you are unsure, refer to your ISP.

12.5.1 Default Server IP Address

In addition to the servers for specified services, NAT supports a default server IP address. A default server receives packets from ports that are not specified in this screen.

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Æ If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup.

12.5.2 Port Forwarding: Services and Port Numbers

The ZyXEL Device provides the additional safety of the DMZ ports for connecting your publicly accessible servers. This makes the LAN more secure by physically separating it from your public servers.

Use the Port Forwarding screen to forward incoming service requests to the server(s) on your local network.

The most often used port numbers are shown in the following table. Please refer to RFC 1700 for further information about port numbers.

Table 70 Services and Port Numbers

SERVICES PORT NUMBER ECHO 7 FTP (File Transfer Protocol) 21 SMTP (Simple Mail Transfer Protocol) 25 DNS (Domain Name System) 53 Finger 79 HTTP (Hyper Text Transfer protocol or WWW, Web) 80 POP3 (Post Office Protocol) 110 NNTP (Network News Transport Protocol) 119 SNMP (Simple Network Management Protocol) 161 SNMP trap 162 PPTP (Point-to-Point Tunneling Protocol) 1723

12.5.3 Configuring Servers Behind Port Forwarding (Example)

Let's say you want to assign ports 21-25 to one FTP, Telnet and SMTP server (A in the example), port 80 to another (B in the example) and assign a default server IP address of 192.168.1.35 to a third (C in the example). You assign the LAN IP addresses and the ISP assigns the WAN IP address. The NAT network appears as a single host on the Internet.

IP Address assigned by ISP

12.5.4 NAT and Multiple WAN The ZyXEL Device has two WAN interfaces. You can configure port forwarding and trigger port rule sets for the first WAN interface and separate sets of rules for the second WAN interface.

12.5.5 Port Translation

The ZyXEL Device can translate the destination port number or a range of port numbers of packets coming from the WAN to another destination port number or range of port numbers on the local network. When you use port forwarding without port translation, a single server on the local network can use a specific port number and be accessible to the outside world through a single WAN IP address. When you use port translation with port forwarding, multiple servers on the local network can use the same port number and still be accessible to the outside world through a single WAN IP address.

The following example has two web servers on a LAN. Server A uses IP address 192.168.1.33 and server B uses 192.168.1.34. Both servers use port 80. The letters a.b.c.d represent the WAN ports IP address. The ZyXEL Device translates port 8080 of traffic received on the WAN port (IP address a.b.c.d) to port 80 and sends it to server A (IP address 192.168.1.33). The ZyXEL Device also translates port 8100 of traffic received on the WAN port (also IP address a.b.c.d) to port 80, but sends it to server B (IP address 192.168.1.34).

paf In this example, anyone wanting to access server A from the Internet must use port 8080. Anyone wanting to access server B from the Internet must use port 8100.

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12.6 Port Forwarding Screen

Click ADVANCED > NAT > Port Forwarding to open the Port Forwarding screen.

If you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup.

Refer to Figure 70 on page 236 for port numbers commonly used for particular services.

The last port forwarding rule is reserved for Roadrunner services. The rule is activated only when you set the WAN Encapsulation to Ethernet and the Service Type to something other than Standard.

NAT Overview _ Address Mapping DPortForwa

ing} Port Triggering

The following table describes the labels in this screen.

Table 71 ADVANCED > NAT > Port Forwarding

LABEL DESCRIPTION WAN Interface | Select the WAN interface for which you want to view or configure address mapping

Default Server | In addition to the servers for specified services, NAT supports a default server. A default server receives packets from ports that are not specified in this screen. lf you do not assign a Default Server IP address, the ZyXEL Device discards all packets received for ports that are not specified here or in the remote management setup.

Go To Page Choose a page from the drop-down list box to display the corresponding summary page of the port forwarding servers.

# This is the number of an individual port forwarding server entry.

Active Select this check box to enable the port forwarding server entry. Clear this check box to disallow forwarding of these ports to an inside server without having to delete the entry.

Name Enter a name to identify this port-forwarding rule.

Incoming Enter a port number here. To forward only one port, enter it again in the second field.

Port(s) To specify a range of ports, enter the last port to be forwarded in the second field.

Port Translation | Enter the port number here to which you want the ZyXEL Device to translate the incoming port. For a range of ports, you only need to enter the first number of the range to which you want the incoming ports translated, the ZyXEL Device automatically calculates the last port of the translated port range.

Server IP Enter the inside IP address of the server here. Address

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

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Some services use a dedicated range of ports on the client side and a dedicated range of ports on the server side. With regular port forwarding you set a forwarding port in NAT to forward a service (coming in from the server on the WAN) to the IP address of a computer on the client side (LAN). The problem is that port forwarding only forwards a service to a single LAN IP address. In order to use the same service on a different LAN computer, you have to manually replace the LAN computer's IP address in the forwarding port with another LAN computer's IP address.

Trigger port forwarding solves this problem by allowing computers on the LAN to dynamically take turns using the service. The ZyXEL Device records the IP address of a LAN computer that sends traffic to the WAN to request a service with a specific port number and protocol (a "trigger" port). When the ZyXEL Device's WAN port receives a response with a specific port number and protocol ("incoming" port), the ZyXEL Device forwards the traffic to the LAN IP address of the computer that sent the request. After that computer’s connection for that service closes, another computer on the LAN can use the service in the same manner. This way you do not need to configure a new IP address each time you want a different LAN computer to use the application.

Figure 145 Trigger Port Forwarding Process: Example

1 Jane (A) requests a file from the Real Audio server (port 7070).

2 Port 7070 is a “trigger” port and causes the ZyXEL Device to record Jane’s computer IP address. The ZyXEL Device associates Jane's computer IP address with the "incoming" port range of 6970-7170.

3 The Real Audio server responds using a port number ranging between 6970-7170.

The ZyXEL Device forwards the traffic to Jane’s computer IP address.

5 Only Jane can connect to the Real Audio server until the connection is closed or times out. The ZyXEL Device times out in three minutes with UDP (User Datagram Protocol) or two hours with TCP/IP (Transfer Control Protocol/Internet Protocol).

EN Click ADVANCED > NAT > Port Triggering to open the following screen. Use this screen to change your ZyXEL Device’s trigger port settings.

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WT You may also need to create à Firewall rule,

The following table describes the labels in this screen. Table 72 ADVANCED > NAT > Port Triggering

LABEL DESCRIPTION WAN Interface

Select the WAN interface for which you want to view or configure address mapping rules.

This is the rule index number (read-only).

Type a unique name (up to 15 characters) for identification purposes. AIl characters are permitted - including spaces.

Incoming is a port (or a range of ports) that a server on the WAN uses when it sends out a particular service. The ZyXEL Device forwards the traffic with this port (or range of ports) to the client computer on the LAN that requested the service.

Type a port number or the starting port number in a range of port numbers.

Type a port number or the ending port number in a range of port numbers.

The trigger port is a port (or a range of ports) that causes (or triggers) the ZyXEL Device to record the IP address of the LAN computer that sent the traffic to a server on the WAN.

Type a port number or the starting port number in a range of port numbers.

Type a port number or the ending port number in a range of port numbers.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

This chapter shows you how to configure static routes for your ZyXEL Device.

13.1 IP Static Route

The ZyXEL Device usually uses the default gateway to route outbound traffic from local computers to the Internet. To have the ZyXEL Device send data to devices not reachable through the default gateway, use static routes.

For example, the next figure shows a computer (A) connected to the ZyXEL Device’s LAN interface. The ZyXEL Device routes most traffic from A to the Internet through the default gateway (R1). You create one static route to connect to services offered by your ISP behind router R2. You create another static route to communicate with a separate network behind a router (R3) connected to the LAN.

Figure 147 Example of Static Routing Topology

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13.2 IP Static Route

Click ADVANCED > STATIC ROUTE to open the IP Static Route screen.

The first two static route entries are for default WAN 1 and WAN 2 routes on a ZyXEL Device with multiple WAN interfaces. You cannot modify or delete a static default route.

The default route is disabled after you change the static WAN IP address to a dynamic WAN IP address.

Figure 148 ADVANCED > STATIC ROUTE > IP Static Route

STATIC ROUTE Static Route Setup

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The following table describes the labels in this screen. Table 73 ADVANCED > STATIC ROUTE > IP Static Route

# This is the number of an individual static route.

Name This is the name that describes or identifies this route.

Active This field shows whether this static route is active (Yes) or not (No).

Destination This parameter specifies the IP network address of the final destination. Routing is always based on network number.

Gateway This is the IP address of the gateway. The gateway is a router or switch on the same network segment as the ZyXEL Devices interface. The gateway helps forward packets to their destinations.

Modify Click the edit icon to go to the screen where you can set up a static route on the ZyXEL Device.

Click the delete icon to remove a static route from the ZyXEL Device. A window displays asking you to confirm that you want to delete the route.

13.2.1 IP Static Route Edit

Click the edit icon in the IP Static Route screen. The screen shown next appears. Use this screen to configure the required information for a static route.

Figure 149 ADVANCED > STATIC ROUTE > IP Static Route > Edit

The following table describes the labels in this screen. Table 74 ADVANCED > STATIC ROUTE > IP Static Route > Edit

LABEL DESCRIPTION Route Name Enter the name of the IP static route. Leave this field blank to delete this static route. Active This field allows you to activate/deactivate this static route.

Destination IP Address

This parameter specifies the IP network address of the final destination. Routing is always based on network number. If you need to specify a route to a single host, use a subnet mask of 255.255.255.255 in the subnet mask field to force the network number to be identical to the host ID.

Enter the IP subnet mask here.

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Table 74 ADVANCED > STATIC ROUTE > IP Static Route > Edit

LABEL DESCRIPTION Gateway IP Enter the IP address of the gateway. The gateway is a router or switch on the same

Address network segment as the device's LAN or WAN port. The gateway helps forward packets to their destinations.

Metric Metric represents the “cost” of transmission for routing purposes. IP routing uses hop count as the measurement of cost, with a minimum of 1 for directly connected networks. Enter a number that approximates the cost for this link. The number need not be precise, but it must be between 1 and 15. In practice, 2 or 3 is usually a good number.

Private This parameter determines if the ZyXEL Device will include this route to a remote node in its RIP broadcasts.

Select this check box to keep this route private and not included in RIP broadcasts. Clear this check box to propagate this route to other hosts through RIP broadcasts. Apply Click Apply to save your changes. Cancel Click Cancel to exit this screen without saving.

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DNS This chapter shows you how to configure the DNS screens.

DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and vice versa. The DNS server is extremely important because without it, you must know the IP address of a machine before you can access it. The ZyXEL Device uses a system DNS server (in the order you specify in the DNS System screen) to resolve domain names, for example, DDNS and the time server.

142 DNS Server Address Assignment

The ZyXEL Device can get the DNS server addresses in the following ways.

1 TheISP tells you the DNS server addresses, usually in the form of an information sheet, when you sign up. If your ISP gives you DNS server addresses, manually enter them in the DNS server fields.

2 If your ISP dynamically assigns the DNS server IP addresses (along with the ZyXEL Device’s WAN IP address), set the DNS server fields to get the DNS server address from the ISP.

3 You can manually enter the IP addresses of other DNS servers. These servers can be public or private. A DNS server could even be behind a remote IPSec router (see Section 14.5.1 on page 248).

There are three places where you can configure DNS setup on the ZyXEL Device.

1 Use the DNS System screen to configure the ZyXEL Device to use a DNS server to resolve domain names for ZyXEL Device system features such as DDNS and the time server.

2 Use the DNS DHCP screen to configure the DNS server information that the ZyXEL Device sends to the DHCP client devices on the LAN or DMZ.

3 Use the REMOTE MGMT DNS screen to configure the ZyXEL Device to accept or discard DNS queries.

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An address record contains the mapping of a fully qualified domain name (FQDN) to an IP address. An FQDN consists of a host and domain name and includes the top-level domain. For example, www.zyxel.com.tw is a fully qualified domain name, where “www” is the host, “zyxel” is the second-level domain, and “com.tw” is the top level domain. mail.myZyXEL.com.tw is also a FQDN, where "mail" is the host, "myZyXEL" is the second- level domain, and "com.tw" is the top level domain.

The ZyXEL Device allows you to configure address records about the ZyXEL Device itself or another device. This way you can keep a record of DNS names and addresses that people on your network may use frequently. If the ZyXEL Device receives a DNS query for an FQDN for which the ZyXEL Device has an address record, the ZyXEL Device can send the IP address in a DNS response without having to query a DNS name server.

Enabling the wildcard feature for your host causes *.yourhost.com to be aliased to the same IP address as yourhost.com. This feature is useful if you want to be able to use, for example, www.yourhost.com and still reach your hostname.

14.5 Name Server Record

À name server record contains a DNS server”’s IP address. The ZyXEL Device can query the DNS server to resolve domain names for features such as DDNS and the time server. A domain zone may also be included. A domain zone is a fully qualified domain name without the host. For example, zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified domain name.

14.5.1 Private DNS Server

In cases where you want to use domain names to access Intranet servers on a remote private network that has a DNS server, you must identify that DNS server. You cannot use DNS servers on the LAN or from the ISP since these DNS servers cannot resolve domain names to private IP addresses on the remote private network.

Click ADVANCED > DNS to display the following screen. Use this screen to configure your ZyXEL Device’s DNS address and name server records.

| | WANL1 ( 123.23.23.36 ) | Hot | 1vFG [1 » | Default ES Wa

new record before recor

The following table describes the labels in this screen.

LABEL DESCRIPTION Address Record An address record specifies the mapping of a fully qualified domain name (FQDN) to an IP address. An FQDN consists of a host and domain name and includes the top-level domain. For example, www.zyxel.com.tw is a fully qualified domain name, where “www” is the host, “zyxel” is the second-level domain, and “com.tw” is the top level domain.

# This is the index number of the address record.

FQDN This is a host's fully qualified domain name.

Wildcard This column displays whether or not the DNS wildcard feature is enabled for this domain name.

IP Address This is the IP address of a host.

Modify Click the edit icon to go to the screen where you can edit the record.

Click the delete icon to remove an existing record. À window display asking you to confirm that you want to delete the record. Note that subsequent records move up by one when you take this action.

Add Click Add to open a screen where you can add a new address record. Refer to Table 75 on page 251 for information on the fields.

Name Server A name server record contains a DNS server's IP address. The ZyXEL Device

Record can query the DNS server to resolve domain names for features such as DDNS

and the time server.

When the ZyXEL Device needs to resolve a domain name, it checks it against the name server record entries in the order that they appear in this list.

A‘ indicates a name server record without a domain zone. The default record is grayed out. The ZyXEL Device uses this default record if the domain name that needs to be resolved does not match any of the other name server records. A name server record with a domain zone is always put before a record without a domain zone.

# This is the index number of the name server record.

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Chapter 14 DNS LABEL DESCRIPTION Domain Zone A domain zone is a fully qualified domain name without the host. For example, zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified domain name.

From This field displays whether the IP address of a DNS server is from a WAN interface (and which it is) or specified by the user.

DNS Server This is the IP address of a DNS server.

Modify Click a triangle icon to move the record up or down in the list.

Click the edit icon to go to the screen where you can edit the record.

Click the delete icon to remove an existing record. À window display asking you to confirm that you want to delete the record. Note that subsequent records move up by one when you take this action.

Insert Click Insert to open a screen where you can insert a new name server record. Refer to Table 76 on page 252 for information on the fields.

14.6.1 Adding an Address Record

Click Add in the System screen to open this screen. Use this screen to add an address record.

An address record contains the mapping of a fully qualified domain name (FQDN) to an IP address. Configure address records about the ZyXEL Device itself or another device to keep a record of DNS names and addresses that people on your network may use frequently. If the ZyXEL Device receives a DNS query for an FQDN for which the ZyXEL Device has an address record, the ZyXEL Device can send the IP address in a DNS response without having to query a DNS name server. See Section 14.4 on page 248 for more on address records.

Figure 151 ADVANCED > DNS > Add (Address Record)

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Chapter 14 DNS The following table describes the labels in this screen. Table 75 ADVANCED > DNS > Add (Address Record)

LABEL DESCRIPTION FQDN Type a fully qualified domain name (FQDN) of a server. An FQDN starts with a host name and continues all the way up to the top-level domain name. For example, www.zyxel.com.tw is a fully qualified domain name, where “www” is the host, “zyxel” is the second-level domain, and “com.tw” is the top level domain.

IP Address If this entry is for one of the WAN ports on a ZyXEL Device with multiple WAN

ports, select WAN Interface and select WAN 1 or WAN 2 from the drop-down list box.

If this entry is for the WAN port on a ZyXEL Device with a single WAN port, select WAN Interface.

For entries that are not for the WAN port(s), select Custom and enter the IP address of the host in dotted decimal notation.

Select the check box to enable DNS wildcard.

Click Apply to save your changes.

Click Cancel to exit this screen without saving.

14.6.2 Inserting a Name Server Record

Click Insert in the System screen to open this screen. Use this screen to insert a name server record. À name server record contains a DNS server”’s IP address. The ZyXEL Device can query the DNS server to resolve domain names for features such as DDNS and the time server. À domain zone may also be included. À domain zone is a fully qualified domain name without the host. For example, zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified domain name.

Figure 152 ADVANCED > DNS > Insert (Name Server Record)

* Optional. Leave this field blank if all domain zones are served by the specified DNS sarver(s). DNS Server

DNS Server(s) from ISP wa 1 2) First DNS Server[Second DNS Server/Third DNS Serve N/A

1232352 | 123.23,5.1 [

Public DNS Server C 0 û (Private DNS Server E ]

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The following table describes the labels in this screen.

LABEL DESCRIPTION Domain Zone

This field is optional.

A domain zone is a fully qualified domain name without the host. For example, zyxel.com.tw is the domain zone for the www.zyxel.com.tw fully qualified domain name. For example, whenever the ZyXEL Device receives needs to resolve a zyxel.com.tw domain name, it can send a query to the recorded name server IP address.

Leave this field blank if all domain zones are served by the specified DNS server(s).

Select the DNS Server(s) from ISP radio button if your ISP dynamically assigns DNS server information. You also need to select an interface through which the ISP provides the DNS server IP address(es). The interface should be activated and set as a DHCP client.The fields below display the (read-only) DNS server IP address(es) that the ISP assigns. N/A displays for any DNS server IP address fields for which the ISP does not assign an IP address. N/A displays for all of the DNS server IP address fields if the ZyXEL Device has a fixed WAN IP address.

Select Public DNS Server if you have the IP address of a DNS server. The IP address must be public or a private address on your local LAN. Enter the DNS server's IP address in the field to the right.

Public DNS Server entries with the IP address set to 0.0.0.0 are not allowed. Select Private DNS Server if the DNS server has a private IP address and is located in a local network. Enter the DNS server's IP address in the field to the right.

With a private DNS server, you must also configure the first DNS server entry for the LAN or DMZ in the DNS DHCP screen to use DNS Relay.

Private DNS Server entries with the IP address set to 0.0.0.0 are not allowed.

Click Apply to save your changes.

Click Cancel to exit this screen without saving.

DNS cache is the temporary storage area where a router stores responses from DNS servers. When the ZyXEL Device receives a positive or negative response for a DNS query, it records the response in the DNS cache. A positive response means that the ZyXEL Device received the IP address for a domain name that it checked with a DNS server within the five second DNS timeout period. A negative response means that the ZyXEL Device did not receive a response for a query it sent to a DNS server within the five second DNS timeout period.

When the ZyXEL Device receives DNS queries, it compares them against the DNS cache before querying a DNS server. If the DNS query matches a positive entry, the ZyXEL Device responses with the IP address from the entry. If the DNS query matches a negative entry, the ZyXEL Device replies that the DNS query failed.

14.8 Configure DNS Cache

To configure your ZyXEL Device’s DNS caching, click ADVANCED > DNS > Cache. The screen appears as shown.

The following table describes the labels in this screen.

LABEL DESCRIPTION DNS Cache Setup

Cache Positive DNS Select the check box to record the positive DNS resolutions in the cache.

Resolutions Caching positive DNS resolutions helps speed up the ZyXEL Device's processing of commonly queried domain names and reduces the amount of traffic that the ZyXEL Device sends out to the WAN.

Maximum TTL Type the maximum time to live (TTL) (60 to 3600 seconds). This sets how long

the ZyXEL Device is to allow a positive resolution entry to remain in the DNS cache before discarding it.

Cache Negative DNS Resolutions

Caching negative DNS resolutions helps speed up the ZyXEL Device's processing of commonly queried domain names (for which DNS resolution has failed) and reduces the amount of traffic that the ZyXEL Device sends out to the WAN.

Type the time (60 to 3600 seconds) that the ZyXEL Device is to allow a negative

Period resolution entry to remain in the DNS cache before discarding it.

Apply Click Apply to save your changes back to the ZyXEL Device.

Reset Click Reset to begin configuring this screen afresh.

Flush Click this button to clear the cache manually. After you flush the cache, the ZyXEL Device must query the DNS servers again for any domain names that had been previously resolved.

Refresh Click this button to reload the cache.

# This is the index number of a record.

Cache Type This displays whether the response for the DNS request is positive or negative.

This is the domain name of a host.

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Chapter 14 DNS LABEL DESCRIPTION IP Address This is the (resolved) IP address of a host. This field displays 0.0.0.0 for negative DNS resolution entries.

Remaining Time This is the number of seconds left before the DNS resolution entry is discarded

(sec) from the cache.

Modify Click the delete icon to remove the DNS resolution entry from the cache.

149 Configuring DNS DHCP

Click ADVANCED > DNS > DHCP to open the DNS DHCP screen shown next. Use this screen to configure the DNS server information that the ZyXEL Device sends to its LAN or DMZ DHCP clients.

Selected Interface LAN » 1

Er+ DNS Server [From sp 2] [nant tstpns 1232351 x] Esecond DNS Server [FromisP 2] fwan_1 2n4 DNS: 12323.52 x] Errie DNS Server [Fromise x] [nant ra DNS: na xl

Reset The following table describes the labels in this screen. LABEL DESCRIPTION DNS Servers The ZyXEL Device passes a DNS (Domain Name System) server IP address to Assigned by DHCP | the DHCP clients. Server

Selected Interface Select an interface from the drop-down list box to configure the DNS servers for the specified interface.

DNS These read-only labels represent the DNS servers.

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Chapter 14 DNS LABEL DESCRIPTION IP Select From ISP if your ISP dynamically assigns DNS server information (and the ZyXEL Device's WAN IP address). Use the drop-down list box to select a DNS server IP address that the ISP assigns in the field to the right.

Select User-Defined if you have the IP address of a DNS server. Enter the DNS server's IP address in the field to the right. If you chose User-Defined, but leave the IP address set to 0.0.0.0, User-Defined changes to None after you click Apply. If you set a second choice to User-Defined, and enter the same IP address, the second User-Defined changes to None after you click Apply. Select DNS Relay to have the ZyXEL Device act as a DNS proxy. The ZyXEL Device's LAN or DMZ IP address displays in the field to the right (read-only). The ZyXEL Device tells the DHCP clients on the LAN or DMZ that the ZyXEL Device itself is the DNS server. When a computer on the LAN or DMZ sends a DNS query to the ZyXEL Device, the ZyXEL Device forwards the query to the ZyXEL Device's system DNS server (configured in the DNS System screen) and relays the response back to the computer. You can only select DNS Relay for one of the three servers:; if you select DNS Relay for a second or third DNS server, that choice changes to None after you click Apply.

Select None if you do not want to configure DNS servers. You must have another DHCP sever on your LAN, or else the computers must have their DNS server addresses manually configured. If you do not configure a DNS server, you must know the IP address of a computer in order to access it.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic DNS services so that anyone can contact you (in NetMeeting, CU-SeeMe, etc.). You can also access your FTP server or Web site on your own computer using a domain name (for instance myhost.dhs.org, where myhost is a name of your choice) that will never change instead of using an IP address that changes each time you reconnect. Your friends or relatives will always be able to call you even if they don't know your IP address.

First of all, you need to have registered a dynamic DNS account with www.dyndns.org. This is for people with a dynamic IP from their ISP or DHCP server that would still like to have a domain name. The Dynamic DNS service provider will give you a password or key.

You must go to the Dynamic DNS service provider’s website and register a user account and a domain name before you can use the Dynamic DNS service with your ZyXEL Device.

Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the same IP address as yourhost.dyndns.org. This feature is useful if you want to be able to use, for example, www.yourhost.dyndns.org and still reach your hostname.

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Æ If you have a private WAN IP address, then you cannot use Dynamic DNS.

14.10.2 High Availability

À DNS server maps a domain name to a port's IP address. If that WAN port loses its connection, high availability allows the router to substitute another port's IP address for the

domain name mapping.

14.11 Configuring Dynamic DNS To change your ZyXEL Device’s DDNS, click ADVANCED > DNS > DDNS. The screen appears as shown.

Figure 155 ADVANCED > DNS > DDNS System Cache DHCP _DDNS F Active Service Provider Username Password

Domain Name ES 1P Address Update Policy |H ES NTI | LEE 1 Torre >] r ir Wan 1 æ] [use waniP Address - [ml

*HA: High Availability, Enable this option to bind with another WAN interface when the specified WAN interface is not available.

The following table describes the labels in this screen.

LABEL DESCRIPTION Account Setup

Select this check box to use dynamic DNS.

This is the name of your Dynamic DNS service provider.

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Chapter 14 DNS LABEL DESCRIPTION Username Enter your user name. You can use up to 31 alphanumeric characters (and the underscore). Spaces are not allowed.

Password Enter the password associated with the user name above. You can use up to 31

alphanumeric characters (and the underscore). Spaces are not allowed.

Enter the host names in these fields.

Select the type of service that you are registered for from your Dynamic DNS service provider.

Select Dynamic if you have the Dynamic DNS service. Select Static if you have the Static DNS service. Select Custom if you have the Custom DNS service.

This option is available when Custom is selected in the DDNS Type field. Check with your Dynamic DNS service provider to have traffic redirected to a URL (that you can specify) while you are off line.

Select the check box to enable DYNDNS Wildcard.

Select the WAN interface to use for updating the IP address of the domain name.

IP Address Update Policy

Select Use WAN IP Address to have the ZyXEL Device update the domain name with the WAN interface's IP address.

Select Use User-Defined and enter the IP address if you have a static IP address.

Select Let DDNS Server Auto Detect only when there are one or more NAT routers between the ZyXEL Device and the DDNS server. This feature has the DDNS server automatically detect and use the IP address of the NAT router that has a public IP address.

Note: The DDNS server may not be able to detect the proper IP address if there is an HTTP proxy server between the ZyXEL Device and the DDNS server.

HA Select this check box to enable the high availability (HA) feature. High availability has the ZyXEL Device update a domain name with another interfaces IP address when the normal WAN interface does not have a connection.

The ZyXEL Device will update the domain name with the IP address of whichever WAN interface has a connection, regardiess of the setting in the WAN Interface field.

Disable this feature and the ZyXEL Device will only update the domain name with an IP address of the WAN interface specified in the WAN Interface field. If that WAN interface does not have a connection, the ZyXEL Device will not update the domain name with another port's IP address.

Note: DDNS does not function when the ZyXEL Device uses traffic redirect.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

This chapter provides information on the Remote Management screens.

15.1 Remote Management Overview Remote management allows you to determine which services/protocols can access which ZyXEL Device interface (if any) from which computers. The following figure shows secure and insecure management of the ZyXEL Device coming in from the WAN. HTTPS and SSH access are secure. HTTP and Telnet access are not secure.

Figure 156 Secure and Insecure Remote Management From the WAN LAN WAN Telnet

paf When you configure remote management to allow management from any network except the LAN, you still need to configure a firewall rule to allow access. See Chapter 9 on page 167 for details on configuring firewall rules.

You can also disable a service on the ZyXEL Device by not allowing access for the service/ protocol through any of the ZyXEL Device interfaces.

You may only have one remote management session running at a time. The ZyXEL Device automatically disconnects a remote management session of lower priority when another remote management session of higher priority starts. The priorities for the different types of remote management ions are as follows.

1 Console port 2 SSH

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3 Telnet 4 HTTPS and HTTP

15.1.1 Remote Management Limitations

Remote management does not work when:

1 You have not enabled that service on the interface in the corresponding remote management screen.

2 You have disabled that service in one of the remote management screens.

3 The IP address in the Secure Client IP Address field does not match the client IP address. If it does not match, the ZyXEL Device will disconnect the si immediately.

4 There is already another remote management session with an equal or higher priority running. You may only have one remote management session running at one time.

5 There is a firewall rule that blocks it.

6 A filter is applied (through the commands) to block a Telnet, FTP or Web service.

15.1.2 System Timeout

There is a default system management idle timeout of five minutes (three hundred seconds). The ZyXEL Device automatically logs you out if the management session remains idle for longer than this timeout period. The management session does not time out when a statistics screen is polling. You can change the timeout period in the MAINTENANCE > General screen.

15.2 WWW (HTTP and HTTPS)

HTTPS (HyperText Transfer Protocol over Secure Socket Layer, or HTTP over SSL) is a web protocol that encrypts and decrypts web pages. Secure Socket Layer (SSL) is an application- level protocol that enables secure transactions of data by ensuring confidentiality (an unauthorized party cannot read the transferred data), authentication (one party can identify the other party) and data integrity (you know if data has been changed).

It relies upon certificates, public keys, and private keys (see Chapter 11 on page 195 for more information).

HTTPS on the ZyXEL Device is used so that you may securely access the ZyXEL Device using the web configurator. The SSL protocol specifies that the SSL server (the ZyXEL Device) must always authenticate itself to the SSL client (the computer which requests the HTTPS connection with the ZyXEL Device), whereas the SSL client only should authenticate itself when the SSL server requires it to do so (select Authenticate Client Certificates in the REMOTE MGMT > WWW screen). Authenticate Client Certificates is optional and if selected means the SSL-client must send the ZyXEL Device a certificate. You must apply for a certificate for the browser from a CA that is a trusted CA on the ZyXEL Device.

Please refer to the following figure.

1 HTTPS connection requests from an SSL-aware web browser go to port 443 (by default) on the ZyXEL Device’s WS (web server).

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2 HTTP connection requests from a web browser go to port 80 (by default) on the ZyXEL Device’s WS (web server).

Figure 157 HTTPS Implementation

at If you disable the HTTP service in the REMOTE MGMT > WWW screen, then

the ZyXEL Device blocks all HTTP connection attempts.

15.3 WWW Click ADVANCED > REMOTE MGMT to open the WWW screen. Use this screen to configure the ZyXEL Device’s HTTP and HTTPS management settings.

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Figure 158 ADVANCED > REMOTE MGMT > WWW

www ssH TELNET FTP SNMP. DNS CNM Server Certificate auto_generated_setf_signec_cert L» | {See My Certificates)

T° Authenticate Client Certificates (See Trusted CAs)

Secure Client IP Address fall (Selected … 0 0 o U Server Port fo

Note 1: For UPnP to function normally, the HTTP service must be available for LAN computers using UPnP. Note 2: You may also need to create à Firewall rule,

The following table describes the labels in this screen.

Table 76 ADVANCED > REMOTE MGMT > WWW LABEL DESCRIPTION HTTPS Server Select the Server Certificate that the ZyXEL Device will use to identify itself. The

Certificate ZyXEL Device is the SSL server and must always authenticate itself to the SSL client (the computer which requests the HTTPS connection with the ZyXEL Device).

Authenticate Select Authenticate Client Certificates (optional) to require the SSL client to

Client authenticate itself to the ZyXEL Device by sending the ZyXEL Device a certificate.

Certificates To do that the SSL client must have a CA-signed certificate from a CA that has been

imported as a trusted CA on the ZyXEL Device (see Appendix F on page 403 on importing certificates for details).

Server Port The HTTPS proxy server listens on port 443 by default. If you change the HTTPS proxy server port to a different number on the ZyXEL Device, for example 8443, then you must notify people who need to access the ZyXEL Device web configurator to use “https://ZyXEL Device IP Address:8443” as the URL.

Server Access | Select the interface(s) through which a computer may access the ZyXEL Device using this service.

You can allow only secure web configurator access by clearing all of the interface check boxes in the HTTP Server Access field and setting the HTTPS Server Access field to an interface(s).

Secure Client IP | A secure client is a “trusted” computer that is allowed to communicate with the Address ZyXEL Device using this service.

Select All to allow any computer to access the ZyXEL Device using this service.

Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service.

HTTP Server Port You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.

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Table 76 ADVANCED > REMOTE MGMT > WWW (continued)

LABEL DESCRIPTION Server Access | Select the interface(s) through which a computer may access the ZyXEL Device using this service.

Secure Client IP | A secure client is a “trusted” computer that is allowed to communicate with the Address ZyXEL Device using this service.

Select All to allow any computer to access the ZyXEL Device using this service.

Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service.

Apply Click Apply to save your customized settings and exit this screen.

Reset Click Reset to begin configuring this screen afresh.

If you haven’t changed the default HTTPS port on the ZyXEL Device, then in your browser enter “https://ZyXEL Device IP Address/” as the web site address where “ZyXEL Device IP Address” is the IP address or domain name of the ZyXEL Device you wish to access.

15.4.1 Internet Explorer Warning Messages

When you attempt to access the ZyXEL Device HTTPS server, a Windows dialog box pops up asking if you trust the server certificate. Click View Certificate if you want to verify that the certificate is from the ZyXEL Device.

You see the following Security Alert screen in Internet Explorer. Select Yes to proceed to the web configurator login screen; if you select No, then web configurator access is blocked.

Figure 159 Security Alert Dialog Box (Internet Explorer)

Information you exchange with his site cannot be viewed or ST changed by others. However, there is a problem with the sites security ceriicate.

A The security certficate was issued by à company you have not chosen to trust. View the certificate to determine whether you want ta trust the certifsing authority.

© The security certificate date is valid.

4 The name on the security certificate is invalid or does not match the name of the site

Do you want ta proceed?

15.4.2 Netscape Navigator Warning Messages

When you attempt to access the ZyXEL Device HTTPS server, a Website Certified by an Unknown Authority screen pops up asking if you trust the server certificate. Click Examine Certificate if you want to verify that the certificate is from the ZyXEL Device.

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If Accept this certificate temporarily for this session is selected, then click OK to continue in Netscape.

Select Accept this certificate permanently to import the ZyXEL Device’s certificate into the SSL client.

Figure 160 Security Certificate 1 (Netscape)

Unable to very the ident (RAM PER) es atrusted te.

Possible reasons for this error - Your browser does not recognize the Certificate Authority that issued the sites certificate. The sites certificate is incomplete due to à server misconfiguration.

- You are connected to a ste pretending to be ZyWALL 1WG 0019CB32FF7A, possibly to obtain your canfidential information.

Please notify the site's webmaster about this problem. Before accepting this certificate, you should examine this ste's certiic

wiling to to accept this certificate For the purpose of identfying the wel O019CES2FF7A?

°° accept this certificate permanentiy _ Accept this certificate temporariy for this session °° Do not accept this certificate and do not connect to this web ste

Figure 161 Security Certificate 2 (Netscape)

You have attempted to establish a connection w) However, the security certificate presented bel 1WG 0019CB32FF7A". It is possible, though unlte 4 may be trying to intercept your communication with his web site,

1f you suspect the certificate shown does not belong to "192.168.1.1", please cancel the connection and notify the site administrator.

15.4.3 Avoiding the Browser Warning Messages

The following describes the main reasons that your browser displays warnings about the ZyXEL Device’s HTTPS server certificate and what you can do to avoid seeing the warnings.

+ Theissuing certificate authority of the ZyXEL Device’s HTTPS server certificate is not one of the browser’s trusted certificate authorities. The issuing certificate authority of the ZyXEL Device's factory default certificate is the ZyXEL Device itself since the certificate is a self-signed certificate.

+ For the browser to trust a self-signed certificate, import the self-signed certificate into your operating system as a trusted certificate.

+ _To have the browser trust the certificates issued by a certificate authority, import the certificate authority’s certificate into your operating system as a trusted certificate. Refer to Appendix F on page 403 for details.

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+ The actual IP address of the HTTPS server (the IP address of the ZyXEL Device’s port that you are trying to access) does not match the common name specified in the ZyXEL Device’s HTTPS server certificate that your browser received. Do the following to check the common name specified in the certificate that your ZyXEL Device sends to HTTPS clients.

2a Click REMOTE MGMT. Write down the name of the certificate displayed in the Server Certificate field.

2b Click CERTIFICATES. Find the certificate and check its Subject column. CN stands for certificate’s common name (see Figure 164 on page 266 for an example).

Use this procedure to have the ZyXEL Device use a certificate with a common name that matches the ZyXEL Device’s actual IP address. You cannot use this procedure if you need to access the WAN port and it uses a dynamically assigned IP address.

2a Create a new certificate for the ZyXEL Device that uses the IP address (of the ZyXEL Device’s port that you are trying to access) as the certificate’s common name. For example, to use HTTPS to access a LAN port with IP address 192.168.1.1, create a certificate that uses 192.168.1.1 as the common name. 2b Go to the remote management WWW screen and select the newly created certificate in the Server Certificate field. Click Apply.

After you accept the certificate, the ZyXEL Device login screen appears. The lock displayed in the bottom right of the browser status bar denotes a secure connection.

Figure 162 Example: Lock Denoting a Secure Connection

ZyXEL 7 NBG410W3G Enter Password and click Login. Password: SN El fEïvone L TUS 2 niene 2

Click Login and you then see the next screen. The factory default certificate is a common default certificate for all ZyXEL Device models.

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Figure 163 Replace Certificate Replace Factory Default Certificate

The factory default certificate is common to NBG410W36G devices.

Click Apply to create a cer ate using your NBG410W3G's MAC address that will be specific to this device.

Click Apply in the Replace Certificate screen to create a certificate using your ZyXEL Device’s MAC address that will be specific to this device. Click CERTIFICATES to open the My Certificates screen. You will see information similar to that shown in the following figure.

Figure 164 Device-specific Certificate

MyCertifiestes | Trustedcas Trusted Remote bictory Servers

Click Ignore in the Replace Certificate screen to use the common ZyXEL Device certificate. You will then see this information in the My Certificates screen.

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Figure 165 Common ZyXEL Device Certificate

CERTIFICATES Trusted cas Trusted Remote Directory Servers

Replace Factory Default Certificate

15.5 SSH You can use SSH (Secure SHell) to securely access the ZyXEL Device’s command line interface. Specify which interfaces allow SSH access and from which IP address the access can come.

Unlike Telnet or FTP, which transmit data in plaintext (clear or unencrypted text), SSH is a secure communication protocol that combines authentication and data encryption to provide secure encrypted communication between two hosts over an unsecured network. In the following figure, computer A on the Internet uses SSH to securely connect to the WAN port of the ZyXEL Device for a management session.

Figure 166 SSH Communication Over the WAN Example

The following table summarizes how a secure connection is established between two remote hosts.

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Figure 167 How SSH Works

| Se Internet me) (EE Encryption method to use < Ld

Password / User name

1 Host Identification The SSH client sends a connection request to the SSH server. The server identifies itself with a host key. The client encrypts a randomly generated session key with the host key and server key and sends the result back to the server. The client automatically saves any new server public keys. In subsequent connections, the server public key is checked against the saved version on the client computer.

2 Encryption Method Once the identification is verified, both the client and server must agree on the type of encryption method to use.

3 Authentication and Data Transmission Afier the identification is verified and data encryption activated, a secure tunnel is established between the client and the server. The client then sends its authentication information (user name and password) to the server to log in to the server.

15.7 SSH Implementation on the ZyXEL Device

Your ZyXEL Device supports SSH version 1.5 using RSA authentication and three encryption methods (DES, 3DES and Blowfish). The SSH server is implemented on the ZyXEL Device for remote management and file transfer on port 22. Only one SSH connection is allowed at a time.

15.7.1 Requirements for Using SSH

You must install an SSH client program on a client computer (Windows or Linux operating system) that is used to connect to the ZyXEL Device over SSH.

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15.8 Configuring SSH Click ADVANCED > REMOTE MGMT > SSH to change your ZyXEL Device’s Secure

for secure connections.

EE It is recommended that you disable Telnet and FTP when you configure SSH Figure 168 ADVANCED > REMOTE MGMT > SSH

www ssh TELNET FTP SNMP. DNS CNM Server Host Key auto_generated_self_signed_cert _v |(see My Certificates) Server Port F2

Server Access F Lan waniF wan2zF omz Secure Client IP Address Cha Mselected 0 0 ]

Note: You may also need to create a Firewall rule.

The following table describes the labels in this screen.

Table 77 ADVANCED > REMOTE MGMT > SSH LABEL DESCRIPTION

Server Host Key | Select the certificate whose corresponding private key is to be used to identify the ZyXEL Device for SSH connections. You must have certificates already configured in the My Certificates screen (Click My Certificates and see Chapter 11 on page

Server Port You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.

Server Access Select the interface(s) through which a computer may access the ZyXEL Device

Address ZyXEL Device using this service.

access the ZyXEL Device using this service.

Secure Client IP | A secure client is a “trusted” computer that is allowed to communicate with the

Select All to allow any computer to access the ZyXEL Device using this service. Choose Selected to just allow the computer with the IP address that you specify to

Apply Click Apply to save your customized settings and exit this screen.

Reset Click Reset to begin configuring this screen afresh.

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15.9 Secure Telnet Using SSH Examples

This section shows two examples using a command interface and a graphical interface SSH client program to remotely access the ZyXEL Device. The configuration and connection steps are similar for most SSH client programs. Refer to your SSH client program user’s guide.

15.9.1 Example 1: Microsoft Windows

This section describes how to access the ZyXEL Device using the Secure Shell Client

1 Launch the SSH client and specify the connection information (IP address, port number

or device name) for the ZyXEL Device.

2 Configure the SSH client to accept connection using SSH version 1. 3 A window displays prompting you to store the host key in you computer. Click Yes to

The host has provided you its identification, a host public key.

The fingerprint of the host public key is: “sudi-felasJhum-naln-nozob-digyk-1otuk-rofac-bozab-teme-vupnt"

You can save he host key ta the local database by clicking Ves. You can continue without saving the host key by clicking No. You can also cancel the connection by clicking Cancel.

Do you want ta save the new host key ta the local database?

Enter the password to log in to the ZyXEL Device. The CLI main menu displays next.

15.9.2 Example 2: Linux

This section describes how to access the ZyXEL Device using the OpenSSH client program

that comes with most Linux distributions.

1 Test whether the SSH service is available on the ZyXEL Device.

Enter “telnet 192.168.1.1 22” at a terminal prompt and press [ENTER]. The computer attempts to connect to port 22 on the ZyXEL Device (using the default IP

address of 192.168.1.1).

A message displays indicating the SSH protocol version supported by the ZyXEL Device.

$ telnet 192.168.1.1 22 Trying 192.168.1.1... Connected to 192.168.1.1. Escape character is ‘]J'. SSH-1.5-1.0.0

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2 Enter“ssh -1 192.168.1.1°. This command forces your computer to connect to the ZyXEL Device using SSH version 1. If this is the first time you are connecting to the ZyXEL Device using SSH, a message displays prompting you to save the host information of the ZyXEL Device. Type “yes” and press [ENTER].

Then enter the password to log in to the ZyXEL Device.

Figure 171 SSH Example 2: Login

$ ssh -1 192.168.1.1

The authenticity of host '192.168.1.1 (192.168.1.1)' can't be established.

RSA key fingerprint is 21:6c:07:25:7e:f4:75:80:ec:af:bd:d4:3d:80:53:d1.

Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.1.1' (RSAl) to the list of known hosts.

3 The CLI main menu displays next.

15.10 Secure FTP Using SSH Example

This section shows an example on file transfer using the OpenSSH client program. The configuration and connection steps are similar for other SSH client programs. Refer to your SSH client program user’s guide.

1 Enter“sftp -1 192.168.1.1”. This command forces your computer to connect to the ZyXEL Device for secure file transfer using SSH version 1. If this is the first time you are connecting to the ZyXEL Device using SSH, a message displays prompting you to save the host information of the ZyXEL Device. Type “yes” and press [ENTER].

2 Enter the password to login to the ZyXEL Device.

3 Use the “put” command to upload a new firmware to the ZyXEL Device.

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The authenticity of host '192.168.1.1 (192.168.1.1)' can't be established.

RSA key fingerprint is 21:6c:07:25:7e:f4:75:80:ec:af:bd:d4:3d:80:53:d1.

Are you sure you want to continue connecting (yes/no)? yes Warning: Permanently added '192.168.1.1' (RSAl) to the list of known hosts.

Administrator@192.168.1.1's password:

sftp> put firmuare.bin ras

Uploading firmware.bin to /ras

Read from remote host 192.168.1.1: Connection reset by peer Connection closed

You can use Telnet to access the ZyXEL Device’s command line interface. Specify which interfaces allow Telnet access and from which IP address the access can come.

Configuring TELNET Click ADVANCED > REMOTE MGMT > TELNET to open the following screen. Use this screen to specify which interfaces allow Telnet access and from which IP address the access can come.

It is recommended that you disable Telnet and FTP when you configure SSH for secure connections.

Figure 173 ADVANCED > REMOTE MGMT > Telnet

Server Access F LanF wañF wan2F omz

Secure Client IP Address FAIT Selected © 0 ] 0

Note: You may also need to create à Firewall rule,

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The following table describes the labels in this screen. Table 78 ADVANCED > REMOTE MGMT > Telnet

LABEL DESCRIPTION Server Port You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.

Server Access Select the interface(s) through which a computer may access the ZyXEL Device using this service.

Secure Client IP | A secure client is a “trusted” computer that is allowed to communicate with the Address ZyXEL Device using this service.

Select All to allow any computer to access the ZyXEL Device using this service.

Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service.

Apply Click Apply to save your customized settings and exit this screen. Reset Click Reset to begin configuring this screen afresh.

You can use FTP (File Transfer Protocol) to upload and download the ZyXEL Device’s firmware and configuration files, please see the User’s Guide chapter on firmware and configuration file maintenance for details. To use this feature, your computer must have an FTP client.

To change your ZyXEL Device’s FTP settings, click ADVANCED > REMOTE MGMT > FTP. The screen appears as shown. Use this screen to specify which interfaces allow FTP and from which IP address the access can come.

Æ It is recommended that you disable Telnet and FTP when you configure SSH for secure connections.

Figure 174 ADVANCED > REMOTE MGMT > FTP Www SSH TELNET FTP SNMP DNS CNM CE CO Server Port 21 Server Access F LanF waniF wanF omz Secure Client IP Address ® AlT Selected © © ]

Note: You may also need to create a Firewall rule.

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Address ZyXEL Device using this service. Select AI to allow any computer to access the ZyXEL Device using this service. Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service.

Apply Click Apply to save your customized settings.

Reset Click Reset to begin configuring this screen afresh.

The following table describes the labels in this screen.

Table 79 ADVANCED > REMOTE MGMT > FTP LABEL DESCRIPTION Server Port You may change the server port number for a service if needed, however you must use the same port number in order to use that service for remote management.

Server Access Select the interface(s) through which a computer may access the ZyXEL Device

Secure Client IP A secure client is a “trusted” computer that is allowed to communicate with the

Simple Network Management Protocol is a protocol used for exchanging management information between network devices. SNMP is a member of the TCP/IP protocol suite. Your ZyXEL Device supports SNMP agent functionality, which allows a manager station to manage and monitor the ZyXEL Device through the network. The ZyXEL Device supports SNMP version one (SNMPv1). The next figure illustrates an SNMP management operation.

SNMP is only available if TCP/IP is configured.

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Figure 175 SNMP Management Model

MANAGER SNMP w Y X AGENT AGENT AGENT Managed Device Managed Device Managed Device

An SNMP managed network consists of two main types of component: agents and a manager.

An agent is a management software module that resides in a managed device (the ZyXEL Device). An agent translates the local management information from the managed device into a form compatible with SNMP. The manager is the console through which network administrators perform network management functions. It executes applications that control and monitor managed devices.

The managed devices contain object variables/managed objects that define each piece of information to be collected about a device. Examples of variables include such as number of packets received, node port status etc. A Management Information Base (MIB) is a collection of managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing these objects.

SNMP itself is a simple request/response protocol based on the manager/agent model. The manager issues a request and the agent returns responses using the following protocol operations:

+ Get - Allows the manager to retrieve an object variable from the agent.

+ _GetNext - Allows the manager to retrieve the next object variable from a table or list within an agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it initiates a Get operation, followed by a series of GetNext operations.

+ Set - Allows the manager to set values for object variables within an agent. + _Trap - Used by the agent to inform the manager of some events.

15.141 Supported MIBs

The ZyXEL Device supports MIB II that is defined in RFC-1213 and RFC-1215. The focus of the MIBs is to let administrators collect statistical data and monitor status and performance.

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The ZyXEL Device will send traps to the SNMP manager when any one of the following

events occurs: Table 80 SNMP Traps

TRAP # | TRAP NAME DESCRIPTION 0 coldStart (defined in RFC-1215) | A trap is sent after booting (power on). 1 warmStart (defined in RFC- A trap is sent after booting (software reboot). 1215) 4 authenticationFailure (defined in | A trap is sent to the manager when receiving any SNMP RFC-1215) get or set requirements with the wrong community (password). 6 whyReboot (defined in ZYXEL- | A trap is sent with the reason of restart before rebooting MIB) when the system is going to restart (warm start). 6a For intentional reboot : A trap is sent with the message "System reboot by user!" if reboot is done intentionally, (for example, download new files, CI command "sys reboot", etc.). 6b For fatal error : A trap is sent with the message of the fatal code if the system reboots because of fatal errors.

REMOTE MANAGEMENT: SNMP To change your ZyXEL Device’s SNMP settings, click ADVANCED > REMOTE MGMT >

SNMP. The screen appears as shown.

Figure 176 ADVANCED > REMOTE MGMT > SNMP

www ssH TELNET SNMP Configuration

Get Community [public Set Community [public

Destination 0 . 0 . 0

Service Port fe Service Access F LanF waniF wanzF omz Secure Client IP Address FAI Selected | © 0 ] 0

Note: You may also need to create a Firewall rule.

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The following table describes the labels in this screen.

Table 81 ADVANCED > REMOTE MGMT > SNMP LABEL DESCRIPTION SNMP Configuration

Get Community | Enter the Get Community, which is the password for the incoming Get and GetNext requests from the management station. The default is public and allows all requests.

Set Community | Enter the Set community, which is the password for incoming Set requests from the management station. The default is public and allows all requests.

Community Type the trap community, which is the password sent with each trap to the SNMP manager. The default is public and allows all requests.

Destination Type the IP address of the station to send your SNMP traps to.

SNMP Service Port You may change the server port number for a service if needed, however you must

use the same port number in order to use that service for remote management.

Service Access | Select the interface(s) through which a computer may access the ZyXEL Device using this service.

Secure Client IP | A secure client is a “trusted” computer that is allowed to communicate with the Address ZyXEL Device using this service.

Select All to allow any computer to access the ZyXEL Device using this service.

Choose Selected to just allow the computer with the IP address that you specify to access the ZyXEL Device using this service.

Apply Click Apply to save your customized settings.

Reset Click Reset to begin configuring this screen afresh.

15.15 DNS Use DNS (Domain Name System) to map a domain name to its corresponding IP address and vice versa. Refer to Chapter 6 on page 111 for more information.

Click ADVANCED > REMOTE MGMT > DNS to change your ZyXEL Device’s DNS settings. Use this screen to set from which IP address the ZyXEL Device will accept DNS queries and on which interface it can send them your ZyXEL Device’s DNS settings.

Figure 177 ADVANCED > REMOTE MGMT > DNS

www ssH TELNET FTP SNMP DNS CNM Service Port S Service Access F LanF wanF wanzF omz Secure Client IP Address Cha selected" 0 0 ] ]

Note: You may also need to create à Firewall rule.

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The following table describes the labels in this screen.

Table 82 ADVANCED > REMOTE MGMT > DNS LABEL DESCRIPTION Server Port

The DNS service port number is 53 and cannot be changed here.

Select the interface(s) through which a computer may send DNS queries to the ZyXEL Device.

Secure Client IP A secure client is a “trusted” computer that is allowed to send DNS queries to the

Address ZyXEL Device. Select All to allow any computer to send DNS queries to the ZyXEL Device. Choose Selected to just allow the computer with the IP address that you specify to send DNS queries to the ZyXEL Device.

Apply Click Apply to save your customized settings.

Reset Click Reset to begin configuring this screen afresh.

15.16 Introducing Vantage CNM Vantage CNM (Centralized Network Management) is a browser-based global management solution that allows an administrator from any location to easily configure, manage, monitor and troubleshoot ZyXEL devices located worldwide. See the Vantage CNM User's Guide for

If you allow your ZyXEL Device to be managed by the Vantage CNM server, then you should not do any configurations directly to the ZyXEL Device (using either the web configurator or commands) without notifying the Vantage CNM administrator.

15.17 Configuring CNM Vantage CNM is disabled on the device by default. Click ADVANCED > REMOTE MGMT > CNM to configure your device’s Vantage CNM settings.

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Figure 178 ADVANCED > REMOTE MGMT > CNM WWW ssH Registration Information

Last Registration Time

RTE The following table describes the labels in this screen.

Table 83 ADVANCED > REMOTE MGMT > CNM LABEL DESCRIPTION Registration Information

This read only field displays Not Registered when Enable is not selected. It displays Registering when the ZyXEL Device first connects with the Vantage CNM server and then Registered after it has been successfully registered with the Vantage CNM server. It will continue to display Registering until it successfully registers with the Vantage CNM server. It will not be able to register with the Vantage CNM server if:

The Vantage CNM server is down.

The Vantage CNM server IP address is incorrect.

The Vantage CNM server is behind a NAT router or firewall that does not forward packets through to the Vantage CNM server.

The encryption algorithms and/or encryption keys do not match between the ZyXEL Device and the Vantage CNM server.

Last Registration Time

This field displays the last date (year-month-date) and time (hours-minutes- seconds) that the ZyXEL Device registered with the Vantage CNM server. It displays all zeroes if it has not yet registered with the Vantage CNM server.

Refresh Click Refresh to update the registration status and last registration time. Vantage CNM Setup

Enable Select this check box to allow Vantage CNM to manage your ZyXEL Device. Vantage CNM Server | If the Vantage server is on the same subnet as the ZyXEL Device, enter the Address private or public IP address of the Vantage server.

Ifthe Vantage CNM server is on a different subnet to the ZyXEL Device, enter the public IP address of the Vantage server.

Ifthe Vantage CNM server is on a different subnet to the ZyXEL Device and is behind a NAT router, enter the WAN IP address of the NAT router here.

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Table 83 ADVANCED > REMOTE MGMT > CNM (continued)

LABEL DESCRIPTION Encryption Algorithm

The Encryption Algorithm field is used to encrypt communications between the ZyXEL Device and the Vantage CNM server. Choose from None (no encryption), DES or 3DES. The Encryption Key field appears when you select DES or 3DES. The ZyXEL Device must use the same encryption algorithm as the Vantage CNM server.

Type eight alphanumeric characters ("0" to "9", "a" to "z" or "A" to "Z") when you choose the DES encryption algorithm and 24 alphanumeric characters ("0" to "9", "a" to "z" or "A" to "Z") when you choose the 3DES encryption algorithm. The ZyXEL Device must use the same encryption key as the Vantage CNM server.

Click Apply to save your changes.

Click Reset to begin configuring this screen afresh.

15.17.1 Additional Configuration for Vantage CNM

If you have NAT routers or firewalls between the ZyXEL Device and the Vantage CNM server, you must configure them to forward TCP ports 8080 (HTTP), 443 (HTTPS) and 20 and 21 (FTP). They must also forward UDP ports 1864 and 1865.

UPnP This chapter introduces the Universal Plug and Play feature.

Universal Plug and Play (UPnP) is a distributed, open networking standard that uses TCP/IP for simple peer-to-peer network connectivity between devices. A UPnP device can dynamically join a network, obtain an IP address, convey its capabilities and learn about other devices on the network. In turn, a device can leave a network smoothly and automatically when it is no longer in use.

16.1.1 How Do I Know ff l'm Using UPnP?

UPnP hardware is identified as an icon in the Network Connections folder (Windows XP). Each UPnP compatible device installed on your network will appear as a separate icon. Selecting the icon of a UPnP device will allow you to access the information and properties of that device.

16.1.2 NAT Traversal

UPnP NAT traversal automates the process of allowing an application to operate through NAT. UPnP network devices can automatically configure network addressing, announce their presence in the network to other UPnP devices and enable exchange of simple product and service descriptions. NAT traversal allows the following:

+ Dynamic port mapping

+ Learning public IP addresses

+ Assigning lease times to mappings Windows Messenger is an example of an application that supports NAT traversal and UPnP.

See Chapter 12 on page 225 for further information about NAT.

16.1.3 Cautions with UPnP The automated nature of NAT traversal applications in establishing their own services and opening firewall ports may present network security issues. Network information and configuration may also be obtained and modified by users in some network environments.

When a UPnP device joins a network, it announces its presence with a multicast message. For security reasons, the ZyXEL Device allows multicast messages on the LAN only.

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Chapter 16 UPnP All UPnP-enabled devices may communicate freely with each other without additional configuration. Disable UPnP if this is not your intention.

16.1.4 UPnP and ZyXEL ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum UPnPTM Implementers Corp. (UIC). ZyXEL's UPnP implementation supports IGD 1.0 (Internet Gateway Device).

See the following sections for examples of installing and using UPnP.

16.2 Configuring UPnP Click ADVANCED > UPnP to display the UPnP screen.

Figure 179 ADVANCED > UPnP Device Name: ZyXEL NBG410W36G Internet Security Appliance T° Enable the Universal Plug and Play (UPnP) feature

Note: For UPnP to function normally, the HTTP service must be available for LAN computers using UPnP.

T° allow users to make configuration changes through UPnP T° Allow UPnP to pass through Firewall Outgoing WAN Interface [11

The following table describes the fields in this screen.

Table 84 ADVANCED > UPnP LABEL DESCRIPTION UPnP Setup

Device Name This identifies the ZyXEL device in UPnP applications.

Enable the Universal Select this check box to activate UPnP. Be aware that anyone could use a Plug and Play (UPnP) UPnP application to open the web configurator's login screen without feature entering the ZyXEL Device's IP address (although you must still enter the

password to access the web configurator).

Allow users to make | Select this check box to allow UPnP-enabled applications to automatically configuration configure the ZyXEL Device so that they can communicate through the cpanges through ZyXEL Device, for example by using NAT traversal, UPnP applications UPnI automatically reserve a NAT forwarding port in order to communicate with another UPnP enabled device; this eliminates the need to manually configure port forwarding for the UPnP enabled application.

Allow UPnP to pass Select this check box to allow traffic from UPnP-enabled applications to through Firewall bypass the firewall. Clear this check box to have the firewall block all UPnP application packets

(for example, MSN packets).

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Chapter 16 UPnP Table 84 ADVANCED > UPnP LABEL DESCRIPTION Outgoing WAN Select through which WAN port you want to send out traffic from UPnP- Interface enabled applications. If the WAN port you select loses its connection, the

ZyXEL Device attempts to use the other WAN port. If the other WAN port also does not work, the ZyXEL Device drops outgoing packets from UPnP- enabled applications.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

16.3 Displaying UPnP Port Mapping

Click ADVANCED > UPnP > Ports to display the UPnP Ports screen. Use this screen to view the NAT port mapping rules that UPnP creates on the ZyXEL Device.

Figure 180 ADVANCED > UPnP > Ports

1 Reserve UPnP NAT rules in flash after system bootup

WAN Interface in Use: WAN 1

External Internal Leas | DEN EN ERRNEE EE ES Appiy Refresh

The following table describes the labels in this screen. Table 85 ADVANCED > UPnP > Ports

LABEL DESCRIPTION Reserve UPnP Select this check box to have the ZyXEL Device retain UPnP created NAT rules NAT rules in flash | even after restarting. If you use UPnP and you set a port on your computer to be after system fixed for a specific service (for example FTP for file transfers), this option allows bootup the ZyXEL Device to keep a record when your computer uses UPnP to create a NAT forwarding rule for that service.

WAN Interface in | This field displays through which WAN interface the ZyXEL Device is currently Use sending out traffic from UPnP-enabled applications. This field displays None when UPnP is disabled or neither of the WAN ports has a connection.

The following read-only table displays information about the UPnP-created NAT mapping rule entries in the ZyXEL Device's NAT routing table.

# This is the index number of the UPnP-created NAT mapping rule entry.

Remote Host This field displays the source IP address (on the WAN) of inbound IP packets. Since this is often a wildcard, the field may be blank. When the field is blank, the ZyXEL Device forwards all traffic sent to the External Port on the WAN interface to the Internal Client on the Internal Port. When this field displays an external IP address, the NAT rule has the ZyXEL Device forward inbound packets to the Internal Client from that IP address only.

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Chapter 16 UPnP Table 85 ADVANCED > UPnP > Ports (continued)

This field displays the port number that the ZyXEL Device “listens” on (on the WAN port) for connection requests destined for the NAT rules Internal Port and Internal Client. The ZyXEL Device forwards incoming packets (from the WAN) With this port number to the Internal Client on the Internal Port (on the LAN). If the field displays “0”, the ZyXEL Device ignores the Internal Port value and forwards requests on all external port numbers (that are otherwise unmapped) to the Internal Client.

This field displays the protocol of the NAT mapping rule (TCP or UDP).

This field displays the port number on the Internal Client to which the ZyXEL Device should forward incoming connection requests.

This field displays the DNS host name or IP address of a client on the LAN. Multiple NAT clients can use a single port simultaneously if the internal client field is set to 255.255.255.255 for UDP mappings.

Enabled This field displays whether or not this UPnP-created NAT mapping rule is turned on. The UPnP-enabled device that connected to the ZyXEL Device and configured the UPnP-created NAT mapping rule on the ZyXEL Device determines whether or not the rule is enabled.

Description This field displays a text explanation of the NAT mapping rule.

This field displays a dynamic port-mapping rule's time to live (in seconds). It displays “0” if the port mapping is static.

Click Apply to save your changes.

Click Refresh update the screen's table.

16.4 Installing UPnP in Windows Example

This section shows how to install UPnP in Windows Me and Windows XP.

Follow the steps below to install UPnP in Windows Me.

1 Click Start, Settings and Control Panel. Double-click Add/Remove Programs.

2 Click on the Windows Setup tab and select Communication in the Components selection box. Click Details.

Eté eme PrgramsPrneriee NF Inst Wndons Set | Stat Die |

To ad or remove # component, select ex car Ie check box If te check boni shaded, olypat afthe companent vil be intl To see was induced in a component, cick Del.

5 ol 10 compenents selected

3 Inthe Communications window, select x

the Universal Plug and Play check box in the Components selection box.

4 Click OK to go back to the Add/ Remove Programs Properties window and click Next.

5 Restart the computer when prompted.

To install a component, select the check box next to the ‘component name, or clear he check box vou da not want to

instal i À shaded box means that onby part of the component will be instaled. To see what's included in à component, cick Detaik.

Component: A ŒNetMeetng 42ME 2 & &ÿPhone Dialer 02MB © Universal Plug and Play

| (a Vital Pivate Netotking o0ME 4

Space used by installed components: 424M8 Space required O0 Space avaleble on disk: 6058 Desciion

Universal Plug and Play enables seamless connectivily and communication between Windows and inteligent applances.

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16.4.2 Installing UPnP in Windows XP Follow the steps below to install UPnP in Windows XP.

1 Click Start, Settings and Control

‘s Network Connections

Panel. Fe Edt Ven Foie Too Mel ter

Operatar-Asssted Dslna DiaupPrefererces.

2 Double-click Network Connections. @x - O5 Ps 3 Inthe Network Connections window, (© tetuork Conretiens click Advanced in the main menu and select Optional Networking Components The Windows Optional Networking

à sets ahomeoe srl 2 office network

Components Wizard window displays. 4 Select Networking Service in the

16.5 Using UPnP in Windows XP Example

This section shows you how to use the UPnP feature in Windows XP. You must already have UPnP installed in Windows XP and UPnP activated on the ZyXEL device.

Make sure the computer is connected to a LAN port of the ZyXEL device. Turn on your

computer and the ZyXEL device.

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1 Click Start and Control Panel. Double-click Network Connections.

An icon displays under Internet Gateway.

2 Right-click the icon and select Properties.

3 Inthe Internet Connection Properties

window, click Settings to see the port mappings that were automatically created.

LS] cast avan arreter

You may edit or delete the port mappings or click Add to manually add port mappings.

Éelectthe services running on vour netwerk thaï Internet users can sa | |

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Chapter 16 UPnP Service Settings.

Desciplion of servie: Frost

Name or IP address for example 192.168.0.12) of the computer hosting this service on your network:

EAU Extemal Poit number for this service:

Intemal Port number for His service:

Æ When the UPnP-enabled device is disconnected from your computer, all port mappings will be deleted automatically.

4 Select the Show icon in notification

area when connected check box and 4? Local Area Connection is now connected | X click OK. An icon displays in the SERRE system tray.

5 Double-click the icon to display your current Internet connection status.

Status: Connected Duration: 00:14:38 Speed: 10.0 Mbps Packets:

16.5.2 Web Configurator Easy Access

With UPnP, you can access the web-based configurator on the ZyXEL device without finding

out the IP address of the ZyXEL device first. This is helpful if you do not know the IP address of the ZyXEL device.

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Chapter 16 UPnP Follow the steps below to access the web configurator.

1 Click Start and then Control Panel. ‘s Network Connections

2 Double-click Network Connections. GE Co Gus Ds AE (Ep

3 Select My Network Places under Os - Q D Ps Dre M Other Places. Aires [@ etat Comectie

Local Area Connection Encbled

4 Anicon with the description for each UPnP-enabled device displays under Local Network.

6 Right-click the icon for your ZyXEL device and select Properties. A properties window displays with basic information about the ZyXEL device.

This chapter covers how to set the ZyXEL Device’s to monitor custom port numbers for specific applications.

17.1 Custom Application

Use custom application to have the ZyXEL Device’s ALG feature monitor traffic on custom ports, in addition to the default ports.

By default, these ZyXEL Device features monitor traffic for the following protocols on these port numbers.

Changes in the Custom APP screen do not apply to the firewall.

17.2 Custom Application Configuration

Click ADVANCED > Custom APP to open the Custom Application screen.

EE This screen only specifies what port numbers the ZyXEL Device checks for specific protocol traffic. Use other screens to enable or disable the monitoring of the protocol traffic.

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Figure 181 ADVANCED > Custom APP Custom Application

Custom Application Settings

0 10 Select a Type-—

Co RE The following table describes the labels in this screen.

Table 86 ADVANCED > Custom APP LABEL DESCRIPTION Application Select the application for which you want the ZyXEL Device to monitor specific ports. You can use the same application in more than one entry. To remove an entry, select Select a Type.

Description Enter information about the reason for monitoring custom port numbers for this protocol.

Start Port Enter the starting port for the range that the ZyXEL Device is to monitor for this application. If you are only entering a single port number, enter it here.

End Port Enter the ending port for the range that the ZyXEL Device is to monitor for this application.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

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This chapter covers how to use the ZyXEL Device’s ALG feature to allow certain applications to pass through the ZyXEL Device.

18.1 ALG Introduction

An Application Layer Gateway (ALG) manages a specific protocol (such as SIP, H.323 or FTP) at the application layer. The ZyXEL Device can function as an ALG to allow certain NAT un-friendly applications (such as SIP) to operate properly through the ZyXEL Device.

Some applications cannot operate through NAT (are NAT un-friendly) because they embed IP addresses and port numbers in their packets’ data payload. The ZyXEL Device examines and uses IP address and port number information embedded in the data stream. When a device behind the ZyXEL Device uses an application for which the ZyXEL Device has ALG service enabled, the ZyXEL Device translates the device’s private IP address inside the data stream to a public IP address. It also records session port numbers and dynamically creates implicit NAT port forwarding and firewall rules for the application’s traffic to come in from the WAN to the LAN.

18.1.1 ALG and NAT The ZyXEL Device dynamically creates an implicit NAT session for the application’s traffic from the WAN to the LAN.

The ALG on the ZyXEL Device supports all NAT mapping types, including One to One, Many to One, Many to Many Overload and Many One to One.

18.1.2 ALG and the Firewall

The ZyXEL Device uses the dynamic port that the session uses for data transfer in creating an implicit temporary firewall rule for the sessions traffic. The firewall rule only allows the session's traffic to go through in the direction that the ZyXEL Device determines from its inspection of the data payload of the application’s packets. The firewall rule is automatically deleted after the application’s traffic has gone through.

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Chapter 18 ALG Screen

18.1.3 ALG and Multiple WAN When the ZyXEL Device has two WAN interfaces and uses the second highest priority WAN interfaces as a back up, traffic cannot pass through when the primary WAN connection fails. The ZyXEL Device does not automatically change the connection to the secondary WAN interfaces.

If the primary WAN connection fails, the client needs to re-initialize the connection through the secondary WAN interfaces to have the connection go through the secondary WAN interfaces.

18.2 FTP File Transfer Protocol (FTP) is an Internet file transfer service that operates on the Internet and over TCP/IP networks. A system running the FTP server accepts commands from a system running an FTP client. The service allows users to send commands to the server for uploading and downloading files. The FTP ALG allows TCP packets with a port 21 destination to pass through. If the FTP server is located on the LAN, you must also configure NAT port forwarding and firewall rules if you want to allow access to the server from the WAN.

H.323 is a standard teleconferencing protocol suite that provides audio, data and video conferencing. It allows for real-time point-to-point and multipoint communication between client computers over a packet-based network that does not provide a guaranteed quality of service. NetMeeting uses H.323.

18.4 RTP When you make a VoIP call using H.323 or SIP, the RTP (Real time Transport Protocol) is used to handle voice data transfer. See RFC 1889 for details on RTP.

18.4.1 H.323 ALG Details

+ The H.323 ALG supports peer-to-peer H.323 calls.

+ The H.323 ALG handles H.323 calls that go through NAT or that the ZyXEL Device routes. You can also make other H.323 calls that do not go through NAT or routing. Examples would be calls between LAN IP addresses that are on the same subnet.

+ The H.323 ALG allows calls to go out through NAT. For example, you could make a call from a private IP address on the LAN to a peer device on the WAN.

+ You must configure the firewall and port forwarding to allow incoming (peer-to-peer) calls from the WAN to a private IP address on the LAN or DMZ. The following example shows H.323 signaling (1) and audio (2) sessions between H.323 devices A and B.

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| > D VS —( internet }—& js = ù A 3

+ With multiple WAN IP addresses on the ZyXEL Device, you can configure different firewall and port forwarding rules to allow incoming calls from each WAN IP address to go to a specific IP address on the LAN or DMZ.

For example, you configure firewall and port forwarding rules to allow LAN IP address A to receive calls through public WAN IP address 1. You configure different firewall and port forwarding rules to allow LAN IP address B to receive calls through public WAN IP address 2.

Figure 183 H.323 with Multiple WAN IP Addresses

S, _ | a + \ (Internet ) &

? ee] + The H.323 ALG operates on TCP packets with a port 1720 destination. + The ZyXEL Device allows H.323 audio connections.

18.5 SIP The Session Initiation Protocol (SIP) is an application-layer control (signaling) protocol that handles the setting up, altering and tearing down of voice and multimedia sessions over the Internet. SIP is used in VoIP (Voice over IP), the sending of voice signals over the Internet Protocol.

SIP signaling is separate from the media for which it handles sessions. The media that is exchanged during the session can use a different path from that of the signaling. SIP handles telephone calls and can interface with traditional circuit-switched telephone networks.

18.5.1 STUN STUN (Simple Traversal of User Datagram Protocol (UDP) through Network Address Translators) allows the VoIP device to find the presence and types of NAT routers and/or firewalls between it and the public Internet. STUN also allows the VoIP device to find the public IP address that NAT assigned, so the VoIP device can embed it in the SIP data stream. See RFC 3489 for details on STUN. You do not need to use STUN for devices behind the ZyXEL Device if you enable the SIP ALG.

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Chapter 18 ALG Screen

18.5.2 SIP ALG Details

+ SIP clients can be connected to the LAN or DMZ. A SIP server must be on the WAN.

+ You can make and receive calls between the LAN and the WAN, between the DMZ and the WAN. You cannot make a call between the LAN and the LAN, between the LAN and the DMZ, between the DMZ and the DMZ, and so on.

+ The SIP ALG allows UDP packets with a port 5060 destination to pass through. + The ZyXEL Device allows SIP audio connections.

The following example shows SIP signaling (1) and audio (2) sessions between SIP clients A and B and the SIP server.

Figure 184 SIP ALG Example

18.5.3 SIP Signaling Session Timeout

Most SIP clients have an “expire” mechanism indicating the lifetime of signaling sessions. The SIP user agent sends registration packets to the SIP server periodically and keeps the session alive in the ZyXEL Device.

If the SIP client does not have this mechanism and makes no calls during the ZyXEL Device SIP timeout default (60 minutes), the ZyXEL Device SIP ALG drops any incoming calls after the timeout period.

18.5.4 SIP Audio Session Timeout

If no voice packets go through the SIP ALG before the timeout period (default 5 minutes) expires, the SIP ALG does not drop the call but blocks all voice traffic and deletes the audio session. You cannot hear anything and you will need to make a new call to continue your conversation.

Click ADVANCED > ALG to open the ALG screen. Use the ALG screen to turn individual ALGs off or on and set the SIP timeout.

The following table describes the labels in this screen.

Table 87 ADVANCED > ALG LABEL DESCRIPTION Enable FTP Select this check box to allow FTP sessions to pass through the ZyXEL Device. FTP ALG (File Transfer Program) is a program that enables fast transfer of files, including

large files that may not be possible by e-mail.

Enable H.323 Select this check box to allow H.323 sessions to pass through the ZyXEL Device.

ALG H.323 is a protocol used for audio communications over networks. Enable SIP Select this check box to allow SIP sessions to pass through the ZyXEL Device. SIP ALG is a signaling protocol used in VolP (Voice over IP), the sending of voice signals over

SIP Timeout Most SIP clients have an “expire” mechanism indicating the lifetime of signaling sessions. The SIP user agent sends registration packets to the SIP server periodically and keeps the session alive in the ZyXEL Device.

Ifthe SIP client does not have this mechanism and makes no calls during the ZyXEL Device SIP timeout (default 60 minutes), the ZyXEL Device SIP ALG drops any incoming calls after the timeout period. Enter the SIP signaling session timeout

value. Apply Click Apply to save your changes. Reset Click Reset to begin configuring this screen afresh.

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PART VI Logs and Maintenance

This chapter contains information about configuring general log settings and viewing the

The web configurator allows you to look at all of the ZyXEL Devices logs in one location.

Click LOGS to open the View Log screen. Use the View Log screen to see the logs for the categories that you selected in the Log Settings screen (see Section 19.3 on page 304). Options include logs about system maintenance, system errors, access control, allowed or blocked web sites, blocked web features (such as ActiveX controls, java and cookies), attacks (such as DoS) and IPSec.

Log entries in red indicate system error logs. The log wraps around and deletes the old entries after it fills. Click a column heading to sort the entries. A triangle indicates ascending or descending sort order.

Figure 186 LOGS > View Log

Display{ Al Logs EI Email Log Now | _Retresh

Firewall default policy: UDP (W1 to W1/ZW) 172.22100.104:54930472.23.37.20:137 PEGEreD : ; ya ACCESS Firewall default policy: UDP (W1 to W1/ZW) 172,22.100.104:51930172.23.37.20:137 DROPPED igns 1P:192.168.1,33 to tw11 +80). IWAN1 connection is up. Iran IWAN interface gets 1P:172.23.37.20 WANL

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The following table describes the labels in this screen. Table 88 LOGS > View Log

LABEL DESCRIPTION Display The categories that you select in the Log Settings page (see Section 19.3 on page 304) display in the drop-down list box.

Select a category of logs to view: select AII Logs to view logs from all of the log categories that you selected in the Log Settings page.

# This field displays the log number.

Time This field displays the time the log was recorded. See Section 20.4 on page 327 to configure the ZyXEL Device's time and date.

Message This field states the reason for the log.

Source This field lists the source IP address and the port number of the incoming packet.

Destination This field lists the destination IP address and the port number of the incoming packet.

Note This field displays additional information about the log entry.

Email Log Now | Click Email Log Now to send the log screen to the e-mail address specified in the Log Settings page (make sure that you have first filled in the E-mail Log Settings fields in Log Settings, see Section 19.3 on page 304).

Refresh Click Refresh to renew the log screen.

Clear Log Click Clear Log to delete all the logs.

19.2 Log Description Example

The following is an example of how a log displays in the command line interpreter and a description of the sample log. Refer to the Section 19.5 on page 312 for more log message descriptions and the appendix for details on using the command line interpreter to display logs.

ACCESS BLOCK Firewall default policy: UDP (NW to W/ZW)

Table 89 Log Description Example LABEL DESCRIPTION

# This is log number five.

time The log was generated on June 8, 2004 at 5:58 and 20 seconds AM.

source The log was generated due to a NetBlOS packet sent from IP address 172.21.4.187 port 137.

destination | The NetBIOS packet was sent to the 172.21.255.255 subnet port 137. This was a NetBlOS UDP broadcast packet meant to discover devices on the network.

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Table 89 Log Description Example LABEL DESCRIPTION

notes The ZyXEL Device blocked the packet.

message | The ZyXEL Device blocked the packet in accordance with the firewall's default policy of blocking sessions that are initiated from the WAN. “UDP" means that this was a User Datagram Protocol packet. “W to W/ZW” indicates that the packet was traveling from the WAN to the WAN or the ZyXEL Device.

myZyXEL.com and the update server use certificates signed by VeriSign to identify themselves. If the ZyXEL Device does not have a CA certificate signed by VeriSign as a trusted CA, the ZyXEL Device will not trust the certificate from myZyXEL.com and the update server. The ZyXEL Device will generate a log like "Due to error code(11), cert not trusted: SSL/TLS peer certif..." for every time it attempt to establish a (HTTPS) connection with myZyXEL.com and the update server. The V4.00 default configuration file includes a trusted CA certificate signed by VeriSign. If you upgraded to ZyNOS V4.00 firmware without uploading the V4.00 default configuration file, you can download a CA certificate signed by VeriSign from myZyXEL.com and import it into the ZyXEL Device as a trusted CA. This will stop the ZyXEL Device from generating this log every time it attempts to connect with myzyxel.com and the update server.

cate Not Trusted Log

Follow the steps below to download the certificate from myZyXEL.com.

1 Gotohttp://www.myZyXEL.com and log in with your account. 2 Click Download Center and then Certificate Download.

Figure 187 myZyXEL.com: Download Center

3 Click the link in the Certificate Download screen.

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Figure 188 myZyXEL.com: Certificate Download

ZyXEL Vieicome | MyAceount | MyProdust | Downiosd Center |

Devrlosd Center / Certificate Download

Certificate Download

8 40 (5,64,3,63..); please dounload ts cartcate and RENTE

To change your ZyXEL Devices log settings, click LOGS > Log Settings. The screen appears as shown.

Use the Log Settings screen to configure to where the ZyXEL Device is to send logs; the schedule for when the ZyXEL Device is to send the logs and which logs and/or immediate alerts the ZyXEL Device is to send.

An alert is a type of log that warrants more serious attention. They include system errors, attacks (access control) and attempted access to blocked web sites or web sites with restricted web features such as cookies, active X and so on. Some categories such as System Errors consist of both logs and alerts. You may differentiate them by their color in the View Log screen. Alerts display in red and logs display in black.

Alerts are e-mailed as soon as they happen. Logs may be e-mailed as soon as the log is full (see Log Schedule). Selecting many alert and/or log categories (especially Access Control) may result in many e-mails being sent.

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Figure 189 LOGS > Log Settings

Li Active Log and Alert

Li Li Fr FM Fr Fr. Li Fr F. M F. FF.

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The following table describes the labels in this screen. Table 90 LOGS > Log Settings

LABEL DESCRIPTION E-mail Log Settings

Enter the server name or the IP address of the mail server for the e-mail addresses specified below. If this field is left blank, logs and alert messages will not be sent via e-mail.

Type a title that you want to be in the subject line of the log e-mail message that the ZyXEL Device sends.

Enter the e-mail address that you want to be in the from/sender line of the log e-mail message that the ZyXEL Device sends. If you activate SMTP authentication, the e-mail address must be able to be authenticated by the mail server as well.

Logs are sent to the e-mail address specified in this field. If this field is left blank, logs will not be sent via e-mail.

Alerts are sent to the e-mail address specified in this field. If this field is left blank, alerts will not be sent via e-mail.

This drop-down menu is used to configure the frequency of log messages being sent as E-mail:

If you select Weekly or Daily, specify a time of day when the E-mail should be sent. If you select Weekly, then also specify which day of the week the E-mail should be sent. If you select When Log is Full, an alert is sent when the log fills up. If you select None, no log messages are sent.

Use the drop down list box to select which day of the week to send the logs.

Time for Sending Log

Enter the time of the day in 24-hour format (for example 23:00 equals 11:00 pm) to send the logs.

SMTP Authentication | SMTP (Simple Mail Transfer Protocol) is the message-exchange standard for the Internet. SMTP enables you to move messages from one e-mail server to another.

Select the check box to activate SMTP authentication. lf mail server authentication is needed but this feature is disabled, you will not receive the e- mail logs.

User Name Enter the user name (up to 31 characters) (usually the user name of a mail account).

Password Enter the password associated with the user name above.

Syslog allows you to send system logs to a server. Syslog logging sends a log to an external syslog server.

Click Active to enable syslog logging.

Enter the server name or IP address of the syslog server that will log the selected categories of logs.

Select a location from the drop down list box. The log facility allows you to log the messages to different files in the syslog server. Refer to the documentation of your syslog program for more details.

Active Log and Alert

Select the categories of logs that you want to record. Logs include alerts.

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Table 90 LOGS > Log Settings (continued)

LABEL DESCRIPTION Send Immediate Alert | Select the categories of alerts for which you want the ZyXEL Device to instantly e-mail alerts to the e-mail address specified in the Send Alerts To field.

Active Some logs (such as the Attacks logs) may be so numerous that it becomes easy to ignore other important log messages. Select this check box to merge logs with identical messages into one log.

You can use the sys log consolidate msglist command to see what log messages will be consolidated.

Log Consolidation Specify the time interval during which the ZyXEL Device merges logs with

Period identical messages into one log. Apply Click Apply to save your changes. Reset Click Reset to begin configuring this screen afresh.

19.4 Configuring Reports

The Reports screen displays which computers on the LAN or DMZ send and receive the most traffic, what kinds of traffic are used the most and which web sites are visited the most often. The ZyXEL Device can record and display the following network usage details:

+ Web sites visited the most often

+ Number of times the most visited web sites were visited

+ The most-used protocols or service ports

+ The amount of traffic for the most used protocols or service ports

+ The LAN or DMZ IP addresses to and/or from which the most traffic has been sent

+ How much traffic has been sent to and from the LAN or DMZ IP addresses to and/or from which the most traffic has been sent

Æ The web site hit count may not be 100% accurate because sometimes when an individual web page loads, it may contain references to other web sites that also get counted as hits.

The ZyXEL Device records web site hits by counting the HTTP GET packets. Many web sites include HTTP GET references to other web sites and the ZyXEL Device may count these as hits, thus the web hit count is not (yet) 100% accurate.

Click LOGS > Reports to display the following screen.

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Figure 190 LOGS > Reports

1 Gollect Statistics 1 Send Raw Traffic Statistics to Syslog Server for Analysis

pen | Statisties Report Interface LAN dl Report Type fwenstemts xl _Retresh_| Fush

Log Settings Reports

Enabling the ZyXEL Device's reporting function decreases the overall throughput by about 1 Mbps.

The following table describes the labels in this screen. Table 91 LOGS > Reports

LABEL DESCRIPTION Collect Select the check box and click Apply to have the ZyXEL Device record report data.

Send Raw Select the check box and click Apply to have the ZyXEL Device send unprocessed

Traffic Statistics | traffic statistics to a syslog server for analysis.

to Syslog You must have the syslog server already configured in the Log Settings screen.

Apply Click Apply to save your changes to the ZyXEL Device.

Reset Click Reset to begin configuring this screen afresh.

Interface Select on which interface (LAN or DMZ) the logs will be collected. The logs on the DMZ or LAN [P alias 1 and 2 are also recorded.

Report Type Use the drop-down list box to select the type of reports to display. Web Site Hits displays the web sites that have been visited the most often from the LAN and how many times they have been visited. Protocol/Port displays the protocols or service ports that have been used the most and the amount of traffic for the most used protocols or service ports. Host IP Address displays the LAN or DMZ IP addresses to and /or from which the most traffic has been sent and how much traffic has been sent to and from those IP addresses.

Refresh Click Refresh to update the report display. The report also refreshes automatically when you close and reopen the screen.

Flush Click Flush to discard the old report data and update the report display.

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Æ All of the recorded reports data is erased when you turn off the ZyXEL Device.

19.4.1 Viewing Web Site Hits

In the Reports screen, select Web Site Hits from the Report Type drop-down list box to have the ZyXEL Device record and display which web sites have been visited the most often and how many times they have been visited.

Figure 191 LOGS > Reports: Web Site Hits Example

View Log Log Settings Reports

Report Type enSteHis x Retresh_|__ Push EL te | | 1 lwwwayxel.com 9 2 (mwzyxel.comitw jm:

The following table describes the label in this screen. Table 92 LOGS > Reports: Web Site Hits Report

LABEL DESCRIPTION Web Site This column lists the domain names of the web sites visited most often from computers on the LAN or DMZ. The names are ranked by the number of visits to each web site and listed in descending order with the most visited web site listed first. The ZyXEL Device counts each page viewed in a web site as another hit on the web site.

Hits This column lists how many times each web site has been visited. The count starts over at 0 if a web site passes the hit count limit (see Table 95 on page 312).

19.4.2 Viewing Host IP Address

In the Reports screen, select Host IP Address from the Report Type drop-down list box to have the ZyXEL Device record and display the LAN or DMZ IP addresses that the most traffic has been sent to and/or from and how much traffic has been sent to and/or from those IP addresses.

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Computers take turns using dynamically assigned LAN or DMZ IP addresses. The ZyXEL Device continues recording the bytes sent to or from a LAN or DMZ IP address when it is assigned to a different computer.

Figure 192 LOGS > Reports: Host IP Address Example

View Log Log Settings _ DNReports.

D M Collect Statistics 1 Send Raw Traffic Statistics to Syslog Server for Analysis

App Reset Statistics Report Interface LAN Report Type Host Adresse otesh_| Push |__| ip address _| Direction] _____________nmount | 1 (172,23. 37.202 incoming 456319 (bytes) 2 f172.23.97.202 loutgoing mm 121679 (bytes) |

The following table describes the labels in this screen. Table 93 LOGS > Reports: Host IP Address

LABEL DESCRIPTION IP Address This column lists the LAN or DMZ IP addresses to and/or from which the most traffic has been sent. The LAN or DMZ IP addresses are listed in descending order with the LAN or DMZ IP address to and/or from which the most traffic was sent listed first.

Direction This field displays Incoming to denote traffic that is coming in from the WAN to the LAN or DMZ. This field displays Outgoing to denote traffic that is going out from the LAN or DMZ to the WAN.

Amount This column displays how much traffic has gone to and from the listed LAN or DMZ IP addresses. The measurement unit shown (bytes, Kbytes, Mbytes or Gbytes) varies with the amount of traffic sent to and from the LAN or DMZ IP address. The count starts over at 0 if the total traffic sent to and from a LAN or DMZ |P passes the bytes count limit (see Table 95 on page 312).

19.4.3 Viewing Protocol/Port

In the Reports screen, select Protocol/Port from the Report Type drop-down list box to have the ZyXEL Device record and display which protocols or service ports have been used the most and the amount of traffic for the most used protocols or service ports.

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Figure 193 LOGS > Reports: Protocol/Port Example LOGS view Log Log Settings | Reports | |

The following table describes the labels in this screen. Table 94 LOGS > Reports: Protocol/ Port

LABEL DESCRIPTION Protocol/Port | This column lists the protocols or service ports for which the most traffic has gone through the ZyXEL Device. The protocols or service ports are listed in descending order with the most used protocol or service port listed first.

Direction This field displays Incoming to denote traffic that is coming in from the WAN to the LAN or DMZ. This field displays Outgoing to denote traffic that is going out from the LAN or DMZ to the WAN.

Amount This column lists how much traffic has been sent and/or received for each protocol or service port. The measurement unit shown (bytes, Kbytes, Mbytes or Gbytes) varies with the amount of traffic for the particular protocol or service port. The count starts over at 0 if a protocol or port passes the bytes count limit (see

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19.4.4 System Reports Specifications

The following table lists detailed specifications on the reports feature. Table 95 Report Specifications

LABEL DESCRIPTION Number ofweb | 20 sites/protocols

Hit count limit: Up to 2%2 hits can be counted per web site. The count starts over at 0 if it passes four billion.

Bytes count Up to 264 bytes can be counted per protocol/port or LAN IP address. The count

limit: starts over at 0 if it passes 2°" bytes.

19.5 Log Descriptions

This section provides descriptions of example log messages. Table 96 System Maintenance Logs

LOG MESSAGE DESCRIPTION Time calibration is successful

The router has adjusted its time based on information from the time server.

Time calibration failed

The router failed to get information from the time server.

WAN interface gets IP: %s

A WAN interface got a new IP address from the DHCP, PPP0E, PPTP or dial-up server.

DHCP client IP expired

A DHCP clients IP address has expired.

DHCP server assigns %s

The DHCP server assigned an IP address to a client.

Successful WEB login

Someone has logged on to the router's web configurator interface.

Someone has failed to log on to the router's web configurator interface.

Someone has logged on to the router via telnet.

Someone has failed to log on to the router via telnet.

Successful FTP login

Someone has logged on to the router via FTP.

Someone has failed to log on to the router via FTP.

NAT Session Table is Full!

The maximum number of NAT session table entries has been exceeded and the table is full.

Starting Connectivity Monitor

Starting Connectivity Monitor.

Time initialized by Daytime Server

The router got the time and date from the Daytime server.

Time initialized by Time server

The router got the time and date from the time server.

Time initialized by NTP server

The router got the time and date from the NTP server.

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Table 96 System Maintenance Logs (continued)

LOG MESSAGE DESCRIPTION Connect to Daytime server fail

The router was not able to connect to the Daytime server.

Connect to Time server fail

The router was not able to connect to the Time server.

Connect to NTP server fail

The router was not able to connect to the NTP server.

Too large ICMP packet has been dropped

The router dropped an ICMP packet that was too large.

Configuration Change: PC Ox®x, Task ID = 0x3x

= The router is saving configuration changes.

Successful SSH login

Someone has logged on to the router's SSH server.

Someone has failed to log on to the router's SSH server.

Successful HTTPS login

Someone has logged on to the router's web configurator interface using HTTPS protocol.

Someone has failed to log on to the router's web configurator interface using HTTPS protocol.

DNS server %s was not responding to last 32

consecutive queries.

The specified DNS server did not respond to the last 32 consecutive queries.

DDNS update IP:%s successfully

d) The device updated the IP address of the specified DDNS

The device sent an e-mail.

LOG MESSAGE DESCRIPTION

This attempt to create a NAT session exceeds the maximum number of NAT session table entries allowed to be created per host.

setNetBlOSFilter: error

The router failed to allocate memory for the NetBIOS filter settings.

readNetBlOSFilter: calloc error

The router failed to allocate memory for the NetBIOS filter settings.

WAN connection is down.

A WAN connection is down. You cannot access the network through this interface.

DHCP Server cannot assign the static IP %S (out of range).

The LAN subnet, LAN alias 1, or LAN alias 2 was changed and the specified static DHCP IP addresses are no longer valid.

The DHCP static IP conflict.

The static DHCP IP address conflicts with another host.

The device failed to send an e-mail (error message included).

SMTP authentication fail

The device failed to authenticate with the SMTP server (error message included).

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Attempted TCP/UDP/IGMP/ESP/GRE/OSPF access matched the default policy and was blocked or forwarded according to the default policy's setting.

| UDP | IGMP | ESP | GRE Firewall rule [NOT] match:[ | OSPF ] <Packet Direction>, <rule:%d>

TCP | Attempted TCP/UDP/IGMP/ESP/GRE/OSPF access matched (or did not match) a configured firewall rule (denoted by its number) and was blocked or forwarded according to the rule.

Triangle route packet forwarded: { TCP | UDP | IGMP | ESP | GRE |

The firewall allowed a triangle route session to pass through.

Packet without a NAT table entry | The router blocked a packet that didn't have a blocked: [ TCP | UDP | IGMP |

corresponding NAT table entry.

message: TCP Router sent blocked web site

The router sent a message to notify a user that the router blocked access to a web site that the user requested.

Exceed maximum sessions per host |The device blocked a session because the host's

connections exceeded the maximum sessions per host.

Firewall allowed a packet that

A packet from the WAN (TCP or UDP) matched a cone

matched a NAT session: [ TCP | NAT session and the device forwarded it to the LAN. UDP ]

Table 99 TCP Reset Logs

LOG MESSAGE DESCRIPTION Under SYN flood attack,

sent TCP RST The router sent a TCP reset packet when a host was under a SYN flood attack (the TCP incomplete count is per destination host.)

incomplete, sent TCP RST The router sent a TCP reset packet when the number of TCP incomplete connections exceeded the user configured threshold. (the TCP incomplete count is per destination host.) Note: Refer to TCP Maximum Incomplete in the Firewall Attack Alerts screen.

Peer TCP state out of

order, sent TCP RST The router sent a TCP reset packet when a TCP connection state was out of order.Note: The firewall refers to RFC793 Figure 6 to check the TCP state.

Firewall session time

out, sent TCP RST The router sent a TCP reset packet when a dynamic firewall session timed out.

The default timeout values are as follows:

ICMP idle timeout: 3 minutes

UDP idle timeout: 3 minutes

TCP idle (established) timeout (s): 150 minutes

TCP reset timeout: 10 seconds

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sent TCP RST The router sent a TCP reset packet when the number of incomplete connections (TCP and UDP) exceeded the user- configured threshold. (Incomplete count is for all TCP and UDP connections through the firewall. )Note: When the number of incomplete connections (TCP + UDP) > “Maximum Incomplete High”, the router sends TCP RST packets for TCP connections and destroys TOS (firewall dynamic sessions) until incomplete connections < “Maximum Incomplete Low”.

sent TCP The router sends a TCP RST packet and generates this log if you turn on the firewall TCP reset mechanism (via CI command: "sys firewall tcprst").

Table 100 Packet Filter Logs

LOG MESSAGE DESCRIPTION

{ TCP | UDP | ICMP | IGMP | Generic ] packet filter matched (set: %d, rule: %d)

Attempted access matched a configured filter rule (denoted by its set and rule number) and was blocked or forwarded according to the rule.

For type and code details, see Table 110 on page 321.

LOG MESSAGE DESCRIPTION Firewall default policy: ICMP <Packet Direction>, <type:%d>,

ICMP access matched the default policy and was blocked or forwarded according to the user's setting.

<code : %d> Firewall rule [NOT] match: ICMP <Packet Direction>, <rule:%d>,

<type:%d>, <code:#d>

ICMP access matched (or didn't match) a firewall rule (denoted by its number) and was blocked or forwarded according to the rule.

Triangle route packet forwarded:

ICMP The firewall allowed a triangle route session to pass through.

acket without a NAT table entry

blocked: ICMP The router blocked a packet that didn't have a corresponding NAT table entry.

Unsupported/out-of-order ICMP:

ICMP The firewall does not support this kind of ICMP packets or the ICMP packets are out of order.

Router reply ICMP packet: ICMP The router sent an ICMP reply packet to the sender.

Table 102 Remote Management Logs

LOG MESSAGE DESCRIPTION Remote Management: FTP denied

Attempted use of FTP service was blocked according to remote management settings.

Remote Management: TELNET denied | Attempted use of TELNET service was blocked according to remote management settings.

Remote Management: HTTP or UPnP Attempted use of HTTP or UPnP service was blocked

denied according to remote management settings.

Remote Management: WWW denied Attempted use of WWW service was blocked according

to remote management settings.

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Table 102 Remote Management Logs

LOG MESSAGE DESCRIPTION Remote Management: HTTPS denied

Attempted use of HTTPS service was blocked according to remote management settings.

Remote Management: SSH denied

Attempted use of SSH service was blocked according to remote management settings.

Remote Management: ICMP Ping response denied

Attempted use of ICMP service was blocked according to remote management settings.

Remote Management: SNMP denied

Attempted use of SNMP service was blocked according to remote management settings.

Remote Management: DNS denied

Attempted use of DNS service was blocked according to remote management settings.

LOG MESSAGE DESCRIPTION

board $%d line $%d channel %d,

The router received the setup requirements for a call. “call” is call %d, %s C01 Outgoing Call |the reference (count) number of the call. “dev” is the device type (3 is for dial-up, 6 is for PPPOE, 10 is for PPTP). “channel” or “ch” is the call channel ID. For example, "board O0 line 0 channel 0, call 3, C01 Outgoing Call dev=6 ch=0 "Means the router has dialed to the PPPOE server 3 times.

board $%d line $%d channel %d, call $d, %s C02 OutCall Connected %d %s

The PPPOE, PPTP or dial-up call is connected.

board $%d line $%d channel %d, call $d, %s C02 Call Terminated

The PPPOE, PPTP or dial-up call was disconnected.

LOG MESSAGE DESCRIPTION

ppp:LCP Starting |The PPP connection's Link Control Protocol stage has started.

The PPP connection's Link Control Protocol stage is opening.

ppp:CHAP Opening |The PPP connection's Challenge Handshake Authentication Protocol stage is

The PPP connection's Internet Protocol Control Protocol stage is starting.

ppp:IPCP Opening |The PPP connection's Internet Protocol Control Protocol stage is opening.

The PPP connection's Link Control Protocol stage is closing.

ppp:IPCP Closing |The PPP connection's Internet Protocol Control Protocol stage is closing.

LOG MESSAGE DESCRIPTION UPnP pass through Firewall

UPnP packets can pass through the firewall.

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For type and code details, see Table 110 on page 321.

Table 106 Attack Logs

LOG MESSAGE DESCRIPTION

attack [| TCP | UDP | IGMP | The firewall detected a TCP/UDP/IGMP/ESP/GRE/OSPF attack. | ESP | GRE | OSPF |]

attack ICMP (type:®%d, The firewall detected an ICMP attack.

land [ TCP | UDP | 1GMP | | The firewall detected a TCP/UDP/IGMP/ESP/GRE/OSPF land ESP | GRE | OSPF | attack.

land ICMP (type:%d, The firewall detected an ICMP land attack.

ip spoofing - WAN [ TCP | | The firewall detected an IP spoofing attack on the WAN port. UDP | IGMP | ESP | GRE |

ip spoofing - WAN ICMP The firewall detected an ICMP IP spoofing attack on the WAN

(type:%d, code:%d) port. icmp echo ICMP The firewall detected an ICMP echo attack. (type:%d, code:%d)

syn flood TCP The firewall detected a TCP syn flood attack.

ports scan TCP The firewall detected a TCP port scan attack.

teardrop TCP The firewall detected a TCP teardrop attack.

teardrop UDP The firewall detected an UDP teardrop attack.

teardrop ICMP (type: code : %d)

The firewall detected an ICMP teardrop attack.

illegal command TCP The firewall detected a TCP illegal command attack.

NetBIOS TCP The firewall detected a TCP NetBlOS attack.

ip spoofing - entry [ TCP | | ESP | GRE |

no routing UDP | IGMP OSPF ]

The firewall classified a packet with no source routing entry as an IP spoofing attack.

ip spoofing entry ICMP code : %d)

- no routing (type:%d,

The firewall classified an ICMP packet with no source routing entry as an IP spoofing attack.

vulnerability ICMP (type:%d, code: #d)

The firewall detected an ICMP vulnerability attack.

traceroute ICMP (type:%d, code : %d)

The firewall detected an ICMP traceroute attack.

ports scan UDP The firewall detected a UDP port scan attack.

Firewall sent TCP packet in response to DoS attack

TCP The firewall sent TCP packet in response to a Dos attack

ICMP Source Quench ICMP The firewall detected an ICMP Source Quench attack.

ICMP Time Exceed ICMP The firewall detected an ICMP Time Exceed attack.

Unreachable ICMP The firewall detected an ICMP Destination Unreachable attack.

ping of death. ICMP The firewall detected an ICMP ping of death attack.

smurf ICMP The firewall detected an ICMP smurf attack.

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Table 106 Attack Logs (continued)

LOG MESSAGE DESCRIPTION IP address in FTP port command is different from the client IP address. It maybe a bounce attack.

The IP address in an FTP port command is different from the client IP address. It may be a bounce attack.

Fragment packet size is

The fragment packet size is smaller than the MTU size of output

smaller than the MTU size |interface.

of output interface. Table 107 3G Logs

LOG MESSAGE DESCRIPTION S1M/3G interface mismatch:

The ID number of the currently selected interface or SIM card is different from the previous one configured for budget control.

Preconfigured SIM card/3G interface doesn’t match inserted card. Might need to reconfigure budget control settings.

The 3G interface is different from the previous one configured for budget control. You may need to reconfigure budget control settings specific to the current user account.

Budget counters are reset, budget control is resumed.

The ZyXEL Device restarted budget calculation from 0 after resetting the existing statistics.

Budget control is resumed.

The ZyXEL Device kept the existing budget control statistics and continue a counting.

Budget control is disabled.

Budget control is deactivated for the user account of the 3G interface on the ZyXEL Device.

Skip 3G SIM authentication because 36 configuration is not set.

The ZyXEL Device skipped SIM card authentication because the PIN code is not specified or SIM card authentication is disabled.

3G SIM authentication failed because of no response from SIM card.

SIM card authentication failed because the ZyXEL Device received a SIM busy message three times when querying for the card status.

3G SIM card PIN code is incorrect.

The specified PIN code does not match the 3G interface.

SIM card not inserted or damaged.

There is no SIM card inserted or the SIM card is damaged.

3G connection has been dropped - %s.

The 3G connection has been dropped due to the specific reason, such as idle timeout, manual disconnection, failure to get an IP address, switching to WAN 1, ping check failure, connection reset, and so on.

Warning: $IMSI$ or $ESN#) Over time budget! (budget = $CONFIGURED BUDGETS$ hours, used = $USED VOLUMES (2 decimals) hours).

This shows that the preconfigured time budget was exceeded. This also displays the ID number of the selected 3G interface or SIM card and the 3G connection's usage time in hours.

Warning: (%IMSI$ or $ESN#) Over %THRESHOLD#$ of time budget (%REMAIN_ BUDGETS (2 decimals) hours remain in

%CONFIGURED BUDGETS hours

This shows that the specified percentage of the time budget was exceeded. This also displays the ID number of the selected 3G interface or SIM card and the amount of time (in hours) the 3G connection can still be used.

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Table 107 3G Logs (continued)

LOG MESSAGE DESCRIPTION Warning: (%ESN% or %IMSI$) This shows that the preconfigured data limit was exceeded. Over data budget! (budget The ID number of the selected 3G interface or SIM card is

=$CONFIGURED_BUDGETS (2 decimals Mbytes, used = $USED_VOLUME® (2 decimals)

displayed. The amount of data (in Mbytes) sent and/or received (depending on your configuration) through the 3G connection is also displayed.

Mbytes). Warning: ($ESN% or %IMSI$) This shows that the specified percentage of data limit was Over % ESHOLD3% of data exceeded. This also displays the ID number of the selected 3G

budget (%REMAIN BUDGETS (2 interface or SIM card and how much data (in Mbytes) can still

decimals) Mbytes remain in $CONFIGURED BUDGETS Mbytes

be transmitted through the 3G connection.

LOG MESSAGE DESCRIPTION Enrollment successful

The SCEP online certificate enrollment was successful. The Destination field records the certification authority server IP address and port.

The SCEP online certificate enrollment failed. The Destination field records the certification authority server's IP address and port.

Failed to resolve <SCEP CA server url>

The SCEP online certificate enrollment failed because the certification authority server's address cannot be resolved.

Enrollment successful

The CMP online certificate enrollment was successful. The Destination field records the certification authority server's IP address and port.

The CMP online certificate enrollment failed. The Destination field records the certification authority server's IP address and port.

Failed to resolve <CMP CA server url>

The CMP online certificate enrollment failed because the certification authority server's IP address cannot be resolved.

Revd ca cert: <subject name>

The router received a certification authority certificate, with subject name as recorded, from the LDAP server whose IP address and port are recorded in the Source field.

Revd user cert: <subject name>

The router received a user certificate, with subject name as recorded, from the LDAP server whose IP address and port are recorded in the Source field.

Revd CRL <size>: <issuer name>

The router received a CRL (Certificate Revocation List), with size and issuer name as recorded, from the LDAP server whose IP address and port are recorded in the Source field.

Revd ARL <size>: <issuer name>

The router received an ARL (Authority Revocation List), with size and issuer name as recorded, from the LDAP server whose address and port are recorded in the Source field.

Failed to decode the received ca cert

The router received a corrupted certification authority certificate from the LDAP server whose address and port are recorded in the Source field.

Failed to decode the received user cert

The router received a corrupted user certificate from the LDAP server whose address and port are recorded in the Source field.

Failed to decode the

received CRL The router received a corrupted CRL (Certificate Revocation List) from the LDAP server whose address and port are recorded in the Source field.

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Table 108 PKI Logs (continued)

LOG MESSAGE DESCRIPTION Failed to decode the The router received a corrupted ARL (Authority Revocation List) from

received ARL era server whose address and port are recorded in the Source

Revd data <size> too The router received directory data that was too large (the size is listed)

large! Max size from the LDAP server whose address and port are recorded in the

allowed: <max size> Source field. The maximum size of directory data that the router allows is also recorded.

Cert trusted: <subject |The router has verified the path of the certificate with the listed subject

Due to <reason codes>, | Due to the reasons listed, the certificate with the listed subject name

cert not trusted: has not passed the path verification. The recorded reason codes are

<subject name> only approximate reasons for not trusting the certificate. Please see Table 113 on page 320 for the corresponding descriptions of the codes.

1 Algorithm mismatch between the certificate and the search constraints.

2 Key usage mismatch between the certificate and the search constraints.

3 Certificate was not valid in the time interval.

5 Certificate is not valid.

6 Certificate signature was not verified correctly.

7 Certificate was revoked by a CRL.

8 Certificate was not added to the cache.

9 Certificate decoding failed.

10 Certificate was not found (anywhere).

11 Certificate chain looped (did not find trusted root).

12 Certificate contains critical extension that was not handled.

13 Certificate issuer was not valid (CA specific information missing).

16 CRL is not valid.

17 CRL signature was not verified correctly.

18 CRL was not found (anywhere).

19 CRL was not added to the cache.

20 CRL decoding failed.

21 CRLis not currently valid, but in the future.

22 CRL contains duplicate serial numbers.

23 Time interval is not continuous.

24 Time information not available.

25 Database method failed due to timeout.

26 Database method failed.

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27 Path was not verified.

28 Maximum path length reached.

Table 109 ACL Setting Notes

PACKET DIRECTION | DIRECTION DESCRIPTION

(L to W) LAN to WAN ACL set for packets traveling from the LAN to the WAN.

(W to L) WAN to LAN ACL set for packets traveling from the WAN to the LAN.

(DtoL) DMZ to LAN ACL set for packets traveling from the DMZ to the LAN.

(D to W) DMZ to WAN ACL set for packets traveling from the DMZ to the WAN.

(W to D) WAN to DMZ ACL set for packets traveling from the WAN to the DMZ.

(Lto D) LAN to DMZ ACL set for packets traveling from the LAN to the DMZ.

(L to L/ZW) LAN to LAN/ ACL set for packets traveling from the LAN to the LAN or ZyXEL Device the ZyXEL Device.

(W to W/ZW) WAN to WAN/ ACL set for packets traveling from the WAN to the WAN ZyXEL Device or the ZyXEL Device.

(D to D/ZW) DMZ to DMZ/ ACL set for packets traveling from the DMZ to the DM or ZyXEL Device the ZyXEL Device.

Table 110 CMP Notes TYPE CODE DESCRIPTION

0 Echo Reply 0 Echo reply message 3 Destination Unreachable 0 Net unreachable 1 Host unreachable 2 Protocol unreachable 3 Port unreachable 4 A packet that needed fragmentation was dropped because it was set to Don't

0 A gateway may discard internet datagrams if it does not have the buffer space needed to queue the datagrams for output to the next network on the route to the destination network.

5 Redirect 0 Redirect datagrams for the Network 1 Redirect datagrams for the Host

D Redirect datagrams for the Type of Service and Network

Redirect datagrams for the Type of Service and Host 8 Echo

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There are two types of syslog: event logs and traffic logs. The device generates an event log when a system event occurs, for example, when a user logs in or the device is under attack. The device generates a traffic log when a "session" is terminated. A traffic log summarizes the session's type, when it started and stopped the amount of traffic that was sent and received and so on. An external log analyzer can reconstruct and analyze the traffic flowing through the

device after collecting the traffic logs.

Table 111 Syslog Logs

This message is sent by the system ("RAS" displays as the system name if you haven't configured one) when the router generates a syslog. The facility is defined in the web MAIN MENU > LOGS > Log Settings page. The severity is the log's syslog class. The definition of messages and notes are defined in the other log tables. The “deviD” is the MAC address of the router's LAN port. The “cat” is the same as the category in the router's logs.

duration=seconds sent-sentBytes revd=receiveBytes dir="<fromito>" protoID=IPProtocolID proto="serviceName" trans="IPSec/Normal"

Traffic Log: <Facility*8 + Severity>Mon dd hr:mmiss hostname src="<srclP:srePort>"

note="Traffic Log" devID="<mac address>" cat="Traffic Log"

This message is sent by the device when the connection (session) is closed. The facility is defined in the Log Settings screen. The severity is the traffic log type. The message and note always display “Traffic Log". The "proto" field lists the service name. The "dir" field lists the incoming and outgoing interfaces ("LAN:LAN", "LAN:WAN", "LAN:DMZ", "LAN:DEV/" for example).

Severity>Mon dd hr: hostname sre="<srcl dst="<dstIP:dstPort>"

This message is sent by the device ("RAS" displays as the system name if you haven't configured one) at the time when this syslog is generated. The facility is defined in the web MAIN MENU > LOGS > Log Settings page. The severity is the log's syslog class. The definition of messages and notes are defined in the other log tables. OB is the Out Break flag and the mac address of the Out Break PC.

note="<note>" devID="<mac address>" cat="Anti Virus"

This message is sent by the device ("RAS" displays as the system name if you haven't configured one) at the time when this syslog is generated. The facility is defined in the web MAIN MENU > LOGS > Log Settings page. The severity is the log's syslog class. The "encode" message indicates the mail attachments encoding method. The definition of messages and notes are defined in the Anti- Virus log descriptions.

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Table 111 Syslog Logs (continued)

LOG MESSAGE DESCRIPTION Event Log: <Facility*8 + Severity>Mon dd hr:mmiss hostname src="<srclP:srePort>" dst="<dstIP:dstPort>" ob="<0|1>" ob_mac="<mac address>" msg="<msg>" note="<note>" devID="<mac address>" cat="IDP" class="<idp class>" sid="<idp sid> act="<idp action>" count="1"

This message is sent by the device ("RAS" displays as the system name if you haven't configured one) at the time when this syslog is generated. The facility is defined in the web MAIN MENU > LOGS > Log Settings page. The severity is the log's syslog class. The definition of messages and notes are defined in the IDP log descriptions.

Event Log: <Facility*8 + Severity>Mon dd hr:mm:s5 hostname sre="<srclP:srePort>" dst="<dstIP:dstPort>" ob="<0|1>" ob_mac="<mac address>" msg="<msg>" note="<note>" devID="<mac address>" cat="Anti Spam" 1stReIP="<IP>"

This message is sent by the device ("RAS" displays as the system name if you haven't configured one) at the time when this syslog is generated. The facility is defined in the web MAIN MENU > LOGS > Log Settings page. The severity is the log's syslog class. 1stRelP is the IP address of the first mail relay server. The definition of messages and notes are defined in the Anti-Spam log descriptions.

The following table shows RFC-2408 ISAKMP payload types that the log displays. Please refer to the RFC for detailed information on each type.

Table 112 RFC-2408 ISAKMP Payload Types

LOG DISPLAY PAYLOAD TYPE SA Security Association PROP Proposal

20.1 Maintenance Overview

The maintenance screens can help you view system information, upload new firmware, manage configuration and restart your ZyXEL Device.

20.2 General Setup and System Name

General Setup contains administrative and system-related information. System Name is for identification purposes. However, because some ISPs check this name you should enter your computer's "Computer Name".

In Windows 95/98 click Start, Settings, Control Panel, Network. Click the Identification tab, note the entry for the Computer Name field and enter it as the System Name.

*_In Windows 2000, click Start, Settings, Control Panel and then double-click System. Click the Network Identification tab and then the Properties button. Note the entry for the Computer name field and enter it as the System Name.

+ In Windows XP, click Start, My Computer, View system information and then click the Computer Name tab. Note the entry in the Full computer name field and enter it as the ZyXEL Device System Name.

20.2.1 General Setup

Click MAINTENANCE to open the General screen. Use this screen to configure administrative and system-related information.

System Name Domain Name i 0 (minutes, D means no timeout)

The following table describes the labels in this screen. Table 113 MAINTENANCE > General Setup

LABEL DESCRIPTION General Setup

System Name Choose a descriptive name for identification purposes. It is recommended you enter your computer's “Computer name” in this field. This name can be up to 30

alphanumeric characters long. Spaces are not allowed, but dashes “-” and underscores "_" are accepted.

Domain Name The Domain Name entry is what is propagated to the DHCP clients on the LAN. If you leave this blank, the domain name obtained by DHCP from the ISP is used. While you must enter the host name (System Name), the domain name can be assigned from the ZyXEL Device via DHCP.

Enter the domain name (if you know it) here. If you leave this field blank, the ISP may assign a domain name via DHCP.

The domain name entered by you is given priority over the ISP assigned domain name.

Administrator Type how many minutes a management session (via the web configurator) can be Inactivity Timer | left idle before the session times out. The default is 5 minutes. After it times out you have to log in with your password again. Very long idle timeouts may have security risks. A value of "0" means a management session never times out, no matter how long it has been left idle (not recommended).

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

20.3 Configuring Password

Click MAINTENANCE > Password to open the following screen. Use this screen to change the ZyXEL Device’s management password.

Chapter 20 Maintenance

General | Password Time and Date ___F/W Upload _ Backup&Restore Restart Password Setul Old Password New Password

se | ET The following table describes the labels in this screen. Table 114 MAINTENANCE > Password

LABEL DESCRIPTION Old Password Type the default password or the existing password you use to access the system in this field. If you forget the password, you may have to use the hardware RESET button. This restores the default password of 1234.

New Password Type your new system password (up to 30 characters). Note that as you type a password, the screen displays a (*) for each character you type.

Retype to Confirm | Type the new password again for confirmation.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

The ZyXEL Device’s Real Time Chip (RTC) keeps track of the time and date. There is also a software mechanism to set the time manually or get the current time and date from an external server when you turn on your ZyXEL Device.

To change your ZyXEL Device’s time and date, click MAINTENANCE > Time and Date. The screen appears as shown. Use this screen to configure the ZyXEL Device’s time based on your local time zone.

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Current Time and Date

The following table describes the labels in this screen. Table 115 MAINTENANCE > Time and Date

LABEL DESCRIPTION Current Time and

Current Time This field displays the ZyXEL Devices present time.

Current Date This field displays the ZyXEL Device’s present date.

Manual Select this radio button to enter the time and date manually. If you configure a new time and date, Time Zone and Daylight Saving at the same time, the new time and date you entered has priority and the Time Zone and Daylight Saving settings do not affect it.

New Time This field displays the last updated time from the time server or the last time

(hh:mmiss) configured manually. When you set Time and Date Setup to Manual, enter the new time in this field and then click Apply.

New Date This field displays the last updated date from the time server or the last date

(yyy-mm-dd) configured manually. When you set Time and Date Setup to Manual, enter the new date in this field and then click Apply.

Get from Time Select this radio button to have the ZyXEL Device get the time and date from the

Server time server you specified below.

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Table 115 MAINTENANCE > Time and Date (continued)

LABEL DESCRIPTION Time Protocol Select the time service protocol that your time server uses. Not all time servers support all protocols, so you may have to check with your ISP/network administrator or use trial and error to find a protocol that works.

The main difference between them is the format.

Daytime (RFC 867) format is day/month/year/time zone of the server.

Time (RFC 868) format displays a 4-byte integer giving the total number of seconds since 1970/1/1 at 0:0:0.

The default, NTP (RFC 1305), is similar to Time (RFC 868).

Time Server Enter the IP address or URL of your time server. Check with your ISP/network Address administrator if you are unsure of this information.

Synchronize Now Click this button to have the ZyXEL Device get the time and date from a time server (see the Time Server Address field). This also saves your changes (including the time server address).

Time Zone Choose the time zone of your location. This will set the time difference between your time zone and Greenwich Mean Time (GMT).

Enable Daylight Daylight saving is a period from late spring to early fall when many countries set

Saving their clocks ahead of normal local time by one hour to give more daytime light in the evening. Select this option if you use Daylight Saving Time.

Start Date Configure the day and time when Daylight Saving Time starts if you selected

Enable Daylight Saving. The o'clock field uses the 24 hour format. Here are a couple of examples:

Daylight Saving Time starts in most parts of the United States on the second Sunday of March. Each time zone in the United States starts using Daylight Saving Time at 2 A.M. local time. So in the United States you would select Second, Sunday, March and type 2 in the o'clock field.

Daylight Saving Time starts in the European Union on the last Sunday of March. All of the time zones in the European Union start using Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So in the European Union you would select Last, Sunday, March. The time you type in the o'clock field depends on your time zone. In Germany for instance, you would type 2 because Germany's time zone is one hour ahead of GMT or UTC (GMT+1).

End Date Configure the day and time when Daylight Saving Time endbs if you selected Enable Daylight Saving. The o'clock field uses the 24 hour format. Here are a couple of examples:

Daylight Saving Time ends in the United States on the first Sunday of November. Each time zone in the United States stops using Daylight Saving Time at 2 A.M. local time. So in the United States you would select First, Sunday, November and type 2 in the o'clock field.

Daylight Saving Time ends in the European Union on the last Sunday of October. All of the time zones in the European Union stop using Daylight Saving Time at the same moment (1 A.M. GMT or UTC). So in the European Union you would select Last, Sunday, October. The time you type in the o'clock field depends on your time zone. In Germany for instance, you would type 2 because Germany's time zone is one hour ahead of GMT or UTC (GMT+1).

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh.

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When you turn on the ZyXEL Device for the first time, the date and time start at 2000-01-01 00:00:00. The ZyXEL Device then attempts to synchronize with an NTP time server from one of the 0.pool.ntp.org, L.pool.ntp.org or 2.pool.ntp.org NTP time server pools. These are virtual clusters of time servers that use a round robin method to provide different NTP servers to clients.

The ZyXEL Device continues to use the NTP time server pools if you do not specify a time server or it cannot synchronize with the time server you specified.

The ZyXEL Device can use the NTP time server pools regardless of the time protocol you select.

When the ZyXEL Device uses the NTP time server pools, it randomly selects one pool and tries to synchronize with a server in it. If the synchronization fails, then the ZyXEL Device goes through the rest of the list in order from the first one tried until either it is successful or all the pre-defined NTP time server pools have been tried.

The ZyXEL Device resets the time in the following instances: + When you click Synchronize Now. + On saving your changes. + When the ZyXEL Device starts up. + 24-hour intervals after starting.

20.5.2 Time Server Synchronization

Click the Synchronize Now button to get the time and date from the predefined time server or the time server you specified in the Time Server Address field.

When the System Time and Date Synchronization in Process screen appears, wait up to one minute.

Figure 197 Synchronization in Process

System Time and Date Synchronization in Progress

The ZyWALL is attempting to synchronize with a time server! This may take up to one minute. Please wait.

Click the Return button to go back to the Time and Date screen after the time and date is updated successfully.

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Figure 198 Synchronization is Successful Time and Date

If the update was not successful, the following screen appears. Click Return to go back to the Time and Date screen.

Figure 199 Synchronization Fail Time and Date

20.6 F/W Upload Screen

Find firmware at www.zyxel.com in a file that (usually) uses the system model name with a bin extension, for example, "NBG410W3G.bin". The upload process uses HTTP (Hypertext Transfer Protocol) and may take up to two minutes. After a successful upload, the system will reboot.

Click MAINTENANCE > F/W UPLOAD. Follow the instructions in this screen to upload firmware to your ZyXEL Device.

© Only upload firmware for your specific model!

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The following table describes the labels in this screen. Table 116 MAINTENANCE > Firmware Upload

LABEL DESCRIPTION File Path | Type in the location of the file you want to upload in this field or click Browse … to find it.

Browse. | Click Browse... to find the .bin file you want to upload. Remember that you must decompress compressed (.zip) files before you can upload them.

Upload Click Upload to begin the upload process. This process may take up to two minutes.

Do not turn off the ZyXEL Device while firmware upload is in progress!

After you see the Firmware Upload in Process screen, wait two minutes before logging into the ZyXEL Device again.

Figure 201 Firmware Upload In Process

FIRMWARE UPLOAD The ZyXEL Device automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop.

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Figure 202 Network Temporarily Disconnected

After two minutes, log in again and check your new firmware version in the HOME screen. Ifthe upload was not successful, the following screen will appear. Click Return to go back to the F/W Upload screen.

Figure 203 Firmware Upload Error FIRMWARE UPLOAD

20.7 Backup and Restore

Click MAINTENANCE > Backup & Restore. Information related to factory defaults, backup configuration, and restoring configuration appears as shown next.

Password Time and Date F/W Upload

20.7.1 Backup Configuration

Backup configuration allows you to back up (save) the ZyXEL Devices current configuration to a file on your computer. Once your ZyXEL Device is configured and functioning properly, itis highly recommended that you back up your configuration file before making configuration changes. The backup configuration file will be useful in case you need to return to your previous settings.

Click Backup to save the ZyXEL Device’s current configuration to your computer.

20.7.2 Restore Configuration

Load a configuration file from your computer to your ZyXEL Device. Table 117 Restore Configuration

LABEL DESCRIPTION File Path Type in the location of the file you want to upload in this field or click Browse … to find it.

Browse... Click Browse... to find the file you want to upload. Remember that you must decompress compressed (.ZIP) files before you can upload them.

Upload Click Upload to begin the upload process.

off the ZyXEL Device while configuration file upload is in progress.

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After you see a “restore configuration successful” screen, you must then wait one minute before logging into the ZyXEL Device again.

Figure 205 Configuration Upload Successful

RESTORE CONFIGURATION The ZyXEL Device automatically restarts in this time causing a temporary network disconnect. In some operating systems, you may see the following icon on your desktop.

Figure 206 Network Temporarily Disconnected

o) Local Area Connection FH Network cable unplugged

If you uploaded the default configuration file you may need to change the IP address of your computer to be in the same subnet as that of the default device IP address (192.168.1.1). See your Quick Start Guide for details on how to set up your computer”’s IP address.

Ifthe upload was not successful, the following screen will appear. Click Return to go back to

the Configuration screen.

Figure 207 Configuration Upload Error RESTORE CONFIGURATION

Click the Reset button to clear all user-entered configuration information and return the ZyXEL Device to its factory defaults as shown on the screen. The following warning screen appears.

Chapter 20 Maintenance

CONFIGURATION You can also press the hardware RESET button to reset the factory defaults of your ZyXEL Device. Refer to Section 2.3 on page 45 for more information on the RESET button.

System restart allows you to reboot the ZyXEL Device without turning the power off.

Click MAINTENANCE > Restart. Click Restart to have the ZyXEL Device reboot. Restart is different to reset; (see Section 20.7.3 on page 335) reset returns the device to its default

PART VII Troubleshooting and Specifications

This chapter offers some suggestions to solve problems you might encounter. The potential problems are divided into the following categories.

+ Power, Hardware Connections, and LEDs + ZyXEL Device Access and Login

21.1 Power, Hardware Connections, and LEDs

e. The ZyXEL Device does not turn on. None of the LEDs turn on.

1 Make sure the ZyXEL Device is turned on. 2 Make sure you are using the power adaptor or cord included with the ZyXEL Device.

3 Make sure the power adaptor is connected to the ZyXEL Device and plugged in to an appropriate power source. Make sure the power source is turned on.

4 Turn the ZyXEL Device off and on or disconnect and re-connect the power adaptor to the ZyXEL Device.

5 Ifthe problem continues, contact the vendor.

e. One of the LEDs does not behave as expected.

1 Make sure you understand the normal behavior of the LED. See Section 1.5.1 on page 39.

2 Check the hardware connections. See the Quick Start Guide. 3 Inspect your cables for damage. Contact the vendor to replace any damaged cables.

4 Turn the ZyXEL Device off and on or disconnect and re-connect the power adaptor to the ZyXEL Device.

5 Ifthe problem continues, contact the vendor.

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e. l forgot the LAN IP address for the ZyXEL Device.

1 The default LAN IP address is 192.168.1.1.

2 Use the console port to log in to the ZyXEL Device.

3 If you changed the IP address and have forgotten it, you might get the IP address of the ZyXEL Device by looking up the IP address of the default gateway for your computer. To do this in most Windows computers, click Start > Run, enter emd, and then enter ipconfig. The IP address of the Default Gateway might be the IP address of the ZyXEL Device (it depends on the network), so enter this IP address in your Internet browser.

4 Ifthis does not work, you have to reset the device to its factory defaults. See Section 2.3 on page 45.

e. l forgot the password.

1 The default password is 1234.

2 Ifthis does not work, you have to reset the device to its factory defaults. See Section 2.3 on page 45.

e. | cannot see or access the Login screen in the web configurator.

1 Make sure you are using the correct IP address. + The default LAN IP address is 192.168.1.1. + Use the ZyXEL Device’s LAN IP address when configuring from the LAN. + Use the ZyXEL Device’s WAN IP address when configuring from the WAN. +_If you changed the LAN IP address (Section 5.7 on page 104), use the new IP address.

+ _If you changed the LAN IP address and have forgotten it, see the troubleshooting suggestions for I forgot the LAN IP address for the ZyXEL Device.

2 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide and Section 1.5.1 on page 39.

3 Make sure your Internet browser does not block pop-up windows and has JavaScripts and Java enabled. See Appendix A on page 353.

4 Make sure your computer's Ethernet adapter is installed and functioning properly.

5 Make sure your computer is in the same subnet as the ZyXEL Device. (If you know that there are routers between your computer and the ZyXEL Device, skip this step.)

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+ _Ifthere is a DHCP server on your network, make sure your computer is using a dynamic IP address. See Appendix B on page 361. Your ZyXEL Device is a DHCP server by default.

6 Reset the device to its factory defaults, and try to access the ZyXEL Device with the

default IP address. See Section 2.3 on page 45.

7 _Ifthe problem continues, contact the network administrator or vendor, or try one of the advanced suggestions.

Advanced Suggestions

+ Try to access the ZyXEL Device using another service, such as Telnet. If you can access the ZyXEL Device, check the remote management settings, and firewall rules to find out why the ZyXEL Device does not respond to HTTP.

*_If your computer is connected to the WAN port or is connected wirelessly, use a computer that is connected to a LAN port.

+ You may also need to clear your Internet browser”’s cache.

In Internet Explorer, click Tools and then Internet Options to open the Internet Options screen.

In the General tab, click Delete Files. In the pop-up window, select the Delete all offline content check box and click OK. Click OK in the Internet Options screen to close it.

+ _If you disconnect your computer from one device and connect it to another device that has the same IP address, your computer’s ARP (Address Resolution Protocol) table may contain an entry that maps the management IP address to the previous device’s MAC address).

In Windows, use arp -d at the command prompt to delete all entries in your computer’s ARP table.

e. | can see the Login screen, but | cannot log in to the ZyXEL Device.

1 Make sure you have entered the password correctly. The default password is 1234. These fields are case-sensitive, so make sure [Caps Lock] is not on.

2 You cannot log in to the web configurator while someone is using Telnet, or the console port to access the ZyXEL Device. Log out of the ZyXEL Device in the other session, or ask the person who is logged in to log out.

3 Turn the ZyXEL Device off and on or disconnect and re-connect the power adaptor or cord to the ZyXEL Device.

4 Ifthis does not work, you have to reset the device to its factory defaults. See Section 2.3 on page 45.

e. | cannot Telnet to the ZyXEL Device.

See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator. Ignore the suggestions about your browser.

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Chapter 21 Troubleshooting

l cannot use FTP to upload / download the configuration file. / | cannot use FTP to upload new firmware.

See the troubleshooting suggestions for I cannot see or access the Login screen in the web configurator. Ignore the suggestions about your browser.

21.3 Internet Access

I cannot get a WAN IP address from the ISP.

1 The ISP provides the WAN IP address after authenticating you. Authentication may be through the user name and password, the MAC address or the host name. The username and password apply to PPPOE and PPPoA encapsulation only. Make sure that you have entered the correct Service Type, User Name and Password (be sure to use the correct casing). Refer to the WAN setup chapter (web configurator).

2 Disconnect all the cables from your device, and follow the directions in the Quick Start Guide again.

3 Ifthe problem continues, contact your ISP.

I cannot access the Internet.

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide and Section 1.5.1 on page 39.

2 Make sure you entered your ISP account information correctly in the wizard, or WAN screen. These fields are case-sensitive, so make sure [Caps Lock] is not on.

3 If you are trying to access the Internet wirelessly, make sure the wireless settings in the wireless client are the same as the settings in the AP.

4 Disconnect all the cables from your device, and follow the directions in the Quick Start Guide again.

5 Ifthe problem continues, contact your ISP.

| cannot access the Internet anymore. | had access to the Internet (with the ZyXEL Device), but my Internet connection is not available anymore.

NBG410W36G Series Users Guide

Chapter 21 Troubleshooting

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick Start Guide and Section 1.5.1 on page 39.

2 If you use PPPoA or PPPOE encapsulation, check the idle time-out setting. Refer to the Chapter 6 on page 111.

3 Reboot the ZyXEL Device. 4 Ifthe problem continues, contact your ISP.

e. The Internet connection is slow or intermittent.

1 There might be a lot of traffic on the network. Look at the LEDs, and check Section 1.5.1 on page 39. Ifthe ZyXEL Device is sending or receiving a lot of information, try closing some programs that use the Internet, especially peer-to-peer applications.

2 Check the signal strength. If the signal strength is low, try moving the ZyXEL Device closer to the AP if possible, and look around to see if there are any devices that might be interfering with the wireless network (for example, microwaves, other wireless networks, and so on).

3 Reboot the ZyXEL Device.

4 Ifthe problem continues, contact the network administrator or vendor, or try one of the advanced suggestions.

e. The 3G OPERATION LED is off.

+ Check the 3G SIM card is correctly inserted. See the Quick Start Guide for instructions.

+ Check your 3G settings are correctly configured in the 3G screen, including your PIN, user name and password (if required) and telephone number (required). Use the information provided by your 3G ISP for your 3G user account.

+_If you have used a different 3G SIM card with this device previously, the 3G card may have stored the settings for your previous SIM card. Ensure you have entered the correct settings for your current SIM card and click Apply.

+ Check that you have selected the correct 3G interface in the 3G (WAND2) screen.

+ Check the HOME screen. An error message displays in the HOME screen if you have entered the incorrect PIN in the 3G (WAND2) screen.

+ Check your 3G connection status in the HOME screen. If WAN2 has no IP address, click Dial to request your 3G ISP for an IP address.

+_If you are using an external 3G USB module, check that it is correctly attached. + Check your 3G account status with your 3G service provider.

NBG410W3G Series Users Guide 343

The 3G SIGNAL STRENGTH LED shows the 3G signal is weak or not available.

Check that your 3G service provider has coverage in your area.

Check that in the 3G (WAND) screen you have selected the correct 3G service for your area. In some areas certain kinds of 3G may not be available.

Move the ZyXEL Device away from any structures such as large buildings or tunnels that may be blocking the 3G signal.

Move the ZyXEL Device away from devices that cause radio signal interference, such as microwave ovens and high voltage power lines.

Check that the ZyXEL Device’s antenna is fully extended and is pointing upwards.

The 3G OPERATION LED is on but my 3G connection is slow or non-existent.

Check that WAN2 has an IP address in the HOME page. Click Dial (several times if necessary) to obtain a WAN2 IP address.

Try moving to an area with better reception. If the signal quality is poor, the 3G modem will time out before obtaining an IP address.

Check that you have enabled NAT in the 3G (WAND2) screen.

Actual download speeds usually differ from maximum advertised speeds. Typical data rates are as follows. If your average download speeds are much lower then the typical data rates given below, check the 3G SIGNAL STRENGTH LED.

-+_Ifthe 3G SIGNAL STRENGTH LED shows a weak signal, follows\ the suggestions given in The 3G SIGNAL STRENGTH LED shows the 3G signal is weak or not available.

+_Ifit shows a strong signal, contact your 3G service provider for more help.

Table 118 Typical 3G transmission speeds

PACKET DATA SERVICE RETIRE are | TYPICAL DATA RATE EDGE Upload 236 kbps 100-130 kbps Download 236 kbps 100-130 kbps

NBG410W36G Series Users Guide

Product Specifications

This chapter gives details about your ZyXEL Device’s hardware and firmware features.

22.1 General ZyXEL Device Specifications

The following tables summarize the ZyXEL Devices hardware and firmware features.

Table 119 Hardware Specifications

SierraWireless MC8775 (NBG410W3G only)

USB slot For installation of a 3G USB dongle.

Supported models include: Huawei E220/E270 SIM Card Slot For installing a 3G SIM card (NBG410W3G only). Antenna NBG410W3G:

One internal 3.6 dBi antenna

One external 850/900/1800/1900/2100 MHz 3G antenna NBG412W3G:

Distance between the centers of the holes (for wall mounting) on the device's back.

Screw size for wall- mounting

M 4*10 Tap Screw, see Figure 210 on page 348.

Operation Environment

Temperature: 0° C - 40° C Humidity: 20% — 95% (non-condensing)

Temperature: -30° — 60° C Humidity: 20% - 95% RH (non-condensing)

EMC: FCC Part 15 Class B, CE-EMC Class B, C-Tick Class B Safety: CSA International, (UL60950-1, CSA60950-1, EN60950-1, IEC60950-1)

NBG410W3G Series User's Guide

Chapter 22 Product Specifications

Use the web configurator to easily configure the rich range of features on the ZyXEL Device.

3G (2.5G) Functionality

Supports UMTS, HSDPA, UMTS, EDGE 3G and GPRS 2.5G standards.

Allows the IEEE 802.11b and/or IEEE 802.11g wireless clients to connect to the ZyXEL Device wirelessly. Enable wireless security (WEP, WPA(2), WPA(2)-PSK) and/or MAC filtering to protect your wireless network.

Download new firmware (when available) from the ZyXEL web site and use the web configurator, an FTP or a TFTP tool to put it on the ZyXEL Device.

Note: Only upload firmware for your specific model!

Configuration Backup & Restoration

Make a copy of the ZyXEL Device's configuration. You can put it back on the ZyXEL Device later if you decide to revert back to an earlier configuration.

Network Address Translation (NAT)

Each computer on your network must have its own unique IP address. Use NAT to convert your public IP address(es) to multiple private IP addresses for the computers on your network.

If you have a server (mail or web server for example) on your network, you can use this feature to let people access it from the Internet.

DHCP (Dynamic Host Configuration Protocol)

Use this feature to have the ZyXEL Device assign IP addresses, an IP default gateway and DNS servers to computers on your network.

With Dynamic DNS (Domain Name System) support, you can use a fixed URL, www.zyxel.com for example, with a dynamic IP address. You must register for this service with a Dynamic DNS service provider.

IP Multicast IP multicast is used to send traffic to a specific group of computers. The ZyXEL Device supports versions 1 and 2 of IGMP (Internet Group Management Protocol) used to join multicast groups (see RFC 2236).

IP Alias IP alias allows you to subdivide a physical network into logical networks

over the same Ethernet interface with the ZyXEL Device itself as the gateway for each subnet.

Get the current time and date from an external server when you turn on your ZyXEL Device. You can also set the time manually. These dates and times are then used in logs.

Use packet tracing and logs for troubleshooting. You can send logs from the ZyXEL Device to an external syslog server.

PPPOE PPPOE mimics a dial-up Internet access connection.

Point-to-Point Tunneling Protocol (PPTP) enables secure transfer of data through a Virtual Private Network (VPN). The ZyXEL Device supports one PPTP connection at a time.

Universal Plug and Play (UPnP)

A UPnP-enabled device can dynamically join a network, obtain an IP address and convey its capabilities to other devices on the network.

NBG410W36G Series Users Guide

Chapter 22 Product Specifications

Table 120 Firmware Specifications

FEATURE DESCRIPTION RoadRunner Support The ZyXEL Device supports Time Warner's RoadRunner Service in addition to standard cable modem services.

Firewall You can configure firewall on the ZyXEL Device for secure Internet

access. When the firewall is on, by default, all incoming traffic from the Internet to your network is blocked unless it is initiated from your network. This means that probes from the outside to your network are not allowed, but you can safely browse the Internet and download files for example.

This allows you to decide whether a service (HTTP or FTP traffic for example) from a computer on a network (LAN or WAN for example) can access the ZyXEL Device.

Table 121 Feature Specifications

FEATURE SPECIFICATION Local User Database Entries 32

Static DHCP Table Entries 32

Concurrent Sessions (NAT sessions) 3,000

Address Mapping Rules 10

Port Forwarding Rules 20

DNS Address Record Entries 30

DNS Name Server Record Entries 16

Firewall Throughput (with NAT) 12 Mbps

Output Power (Maximum) IEEE 802.11b: 16 dBm at 11 Mbps CCK, QPSK, BPSK IEEE 802.119: 13 dBm at 54 Mbps OFDM

22.2 Wall-mounting Instructions

Complete the following steps to hang your ZyXEL Device on a wall.

Æ See Table 119 on page 345 for the size of screws to use and how far apart to

1 Select a position free of obstructions on a sturdy wall. 2 Drill two holes for the screws.

NBG410W3G Series User's Guide

Chapter 22 Product Specifications

© Be careful to avoid damaging pipes or cables located inside the wall when drilling holes for the screws.

3 Do not insert the screws all the way into the wall. Leave a small gap of about 0.5 cm between the heads of the screws and the wall.

4 Make sure the screws are snugly fastened to the wall. They need to hold the weight of the ZyXEL Device with the connection cables.

5 Align the holes on the back of the ZyXEL Device with the screws on the wall. Hang the ZyXEL Device on the screws.

Figure 210 Wall-mounting Example

The following are dimensions of an M4 tap screw and masonry plug used for wall mounting. All measurements are in millimeters (mm).

Figure 211 Masonry Plug and M4 Tap Screw

4.28+0.1 ER) + 6.0+1.0 2.0#0.2 CS Ÿ Leui-e16 30.0+2,0 30.0+2.0

Chapter 22 Product Specifications

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Chapter 22 Product Specifications

350 NBG410W3G Series Users Guide

PART VIII Appendices and Index

The appendices provide general information. Some details may not apply to your ZyXEL Device.

Pop-up Windows, JavaScripts and Java Permissions (353) Setting up Your Computer’s IP Address (361)

IP Addresses and Subnetting (377)

Common Services (385)

Importing Certificates (403)

Customer Support (419)

Pop-up Windows, JavaScripts and Java Permissions

In order to use the web configurator you need to allow:

*_Web browser pop-up windows from your device. + _JavaScripts (enabled by default). *_ Java permissions (enabled by default).

Æ Internet Explorer 6 screens are used here. Screens for other Internet Explorer versions may vary.

Internet Explorer Pop-up Blockers

You may have to disable pop-up blocking to log into your device.

Either disable pop-up blocking (enabled by default in Windows XP SP (Service Pack) 2) or allow pop-up blocking and create an exception for your device’s IP address.

Disable Pop-up Blockers

You can also check if pop-up blocking is disabled in the Pop-up Blocker section in the Privacy tab. 1 In Internet Explorer, select Tools, Internet Options, Privacy.

NBG410W3G Series Users Guide 353

Appendix À Pop-up Windows, JavaScripts and Java Permissions

2 Clear the Block pop-ups check box in the Pop-up Blocker section of the screen. This disables any web pop-up blockers you may have enabled.

Move the slider to select a privacy setting for the Internet zone

- Blocks third-party cookies that do not have a compact privacy policy - Blocks third-party cookies that use persanally identifiable Li information without your implicit consent - Resticts frst-party cockies that use personal identifiable | information without implci consent

Pop-up Blocker & Prevent most pop-up Windows from appearing

3 Click Apply to save this setting.

Enable Pop-up Blockers with Exceptions

Alternatively, if you only want to allow pop-up windows from your device, see the following

- Blocks third-party cookies that do nat have a compact

= Blacks third-party cookies that use personal identifiable LI information without your implicit consent

- Resticts frstparty cookies that use personal identifiable

information without implicit consent

Pop-up Blocker & Prevent most pop-up windows from appearing.

Cancel 3 Type the IP address of your device (the web page that you do not want to have blocked) with the prefix “http://”. For example, http://192.168.167.1. 4 Click Add to move the IP address to the list of Allowed sites.

Figure 215 Pop-up Blocker Settings

Pop-up Blocker Settings

Pop-ups are currently blocked. You can alow popups from specific Web sites by adding the sie lo the Ist belon.

http://192.168.1.1 | Add

Notfications and Filter Level Play a sound when a pop-up is blocked Show Information Bar when à pop-up is blocked

Pop-up Blocker FAQ NBG410W36G Series Users Guide 355

5 Click Close to return to the Privacy screen. 6 Click Apply to save this setting.

Intemet Localintanet Trustedsites Resticted sites

Internet This zone contains all Web sites you havenit placed in other zones

Fr Security level for this zone Move the slider to set the security level for this zone. " | = Medium - Safe browsing and still functional “= - Prompts before downloading potentially unsafe content - Unsigned ActiveX cantrals will not be downloaded - | = -Approprate for most Intemet sites

Click the Custom Level... button. Scroll down to Scripting.

oO um À & D Click OK to close the window.

Under Active scripting make sure that Enable is selected (the default). Under Scripting of Java applets make sure that Enable is selected (the default).

NBG410W36G Series Users Guide

Appendix À Pop-up Windows, JavaScripts and Java Permissions

Figure 217 Security Settings - Java Scripting lsecurity Settings |

Scripting al Active scripting © Diable

© Prompt [5] Allow paste operations via script © Disable © Enable © Prompt [81 Scripting of Java applets Q Disable

Lien Bi dhantie ation

Reset custom settings — Reset to: [Medium Reset

3 Scroll down to Microsoft VM.

4 Under Java permissions make sure that a safety level is selected.

5 Click OK to close the window.

Figure 218 Security Settings - Java 21x]

Settings: © Disable al © Enable

© Disable © Enable [| © Prompt

[EF Microsoft vm Eù 2ava permissions © custom OH © High safety © Low safety

Reset custom settings

1 From Internet Explorer, click Tools, Internet Options and then the Advanced tab. 2 Make sure that Use Java 2 for <applet> under Java (Sun) is selected.

3 Click OK to close the window.

Figure 219 Java (Sun)

Mozilla Firefox 2.0 screens are used here. Screens for other versions may vary.

You can enable Java, Javascripts and pop-ups in one screen. Click Tools, then click Options in

the screen that appears.

À Session Manager L Click Content.to show the screen below. Select the check boxes as shown in the following screen.

FF Enable JavaScript Advanced. NF Enable Java Fonts & COIDFS Default font: | Times New Roman ] See: [is x] Advanced. Colors.

Setting up Your Computer’s IP Address

All computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed.

Windows 95/98/Me/NT/2000/XP, Macintosh OS 7 and later operating systems and all versions of UNIX/LINUX include the software components you need to install and use TCP/IP on your computer. Windows 3.1 requires the purchase of a third-party TCP/IP application package.

TCP/IP should already be installed on computers using Windows NT/2000/XP, Macintosh OS 7 and later operating systems.

After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order to "communicate" with your network.

If you manually assign IP information instead of using dynamic assignment, make sure that your computers have IP addresses that place them in the same subnet as the ZyXEL Device’s LAN port.

Click Start, Settings, Control Panel and double-click the Network icon to open the Network window.

NBG410W36G Series User's Guide

Appendix B Setting up Your Computer's IP Address

The Network window Configuration tab displays a list of installed components. You need a network adapter, the TCP/IP protocol and Client for Microsoft Networks.

If you need the adapter:

1 Inthe Network window, click Add.

2 Select Adapter and then click Add.

3 Select the manufacturer and model of your network adapter and then click OK. If you need TCP/IP:

1 Inthe Network window, click Add.

2 Select Protocol and then click Add.

3 Select Microsoft from the list of manufacturers.

4 Select TCP/IP from the list of network protocols and then click OK. If you need Client for Microsoft Networks:

Click Add. Select Client and then click Add. Select Microsoft from the list of manufacturers.

Select Client for Microsoft Networks from the list of network clients and then click OK.

Restart your computer so the changes you made take effect.

NBG410W36G Series Users Guide

Appendix B Setting up Your Computer’s IP Address

1 Inthe Network window Configuration tab, select your network adapter's TCP/IP entry and click Properties

2 Click the IP Address tab. +_If your IP address is dynamic, select Obtain an IP address automatically.

+_If you have a static IP address, select Specify an IP address and type your information into the IP Address and Subnet Mask fields.

Figure 223 Windows 95/98/Me: TCP/IP Properties: IP Address

Bindings | Advanced | NetBl0S | DNS Configuration | Gateway | WINS Configuration IP Address

An IP address can be automatically assigned to this computer. If your network does not automatically assign IP addresses, ask your network administretor for an address, and then type it in the space below.

Specify an IP address:

F Detect connection to netwark media

3 Click the DNS Configuration tab. +_If you do not know your DNS information, select Disable DNS.

+_If you know your DNS information, select Enable DNS and type the information in the fields below (you may not need to fill them all in).

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Appendix B Setting up Your Computer's IP Address

Figure 224 Windows 95/98/Me: TCP/IP Properties: DNS Configuration

ÉICPAP Propos ETF DNS Configuration | Gateway | WINS Configuration | 1P Address

Bindings | Advanced | NetBl0S

Click the Gateway tab.

+_If you do not know your gateway’s IP address, remove previously installed gateways. +_If you have a gateway IP address, type it in the New gateway field and click Add. Click OK to save and close the TCP/IP Properties window.

Click OK to close the Network window. Insert the Windows CD if prompted.

Turn on your ZyXEL Device and restart your computer when prompted.

Click Start and then Run. In the Run window, type "winipcfg" and then click OK to open the IP Configuration window.

Select your network adapter. You should see your computer's IP address and default gateway.

Windows 2000/NT/XP The following example figures use the default Windows XP GUI theme.

Click start (Start in Windows 2000/NT), Settings, Control Panel.

2 Inthe Control Panel, double-click Network Connections (Network and Dial-up Connections in Windows 2000/NT).

Address |} Control Panel

Windows Update Contrallers 3 Right-click Local Area Connection and then click Properties.

NBG410W36G Series User's Guide

Appendix B Setting up Your Computer's IP Address

Back ) Search Folders Es (e) Oo à, B

adress [@ network Connections

LAN or High-Speed Internet Network Tasks

Create a new connection:

Set up à home or small

office network Eee © Dissbie this network

À Repair this connection

ΠRename this connection

© view status of this connection

Change settings of this connection

4 Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and then click Properties.

Figure 228 Windows XP: Local Area Connection Properties

Local Area Connection Properties

General | Authentication | Advanced

Connect using 3 Accton EN1207D-TX PCI Fast Ethemet Adapter

This connection uses the folowing items: M (S] Ciient for Microsoft Networks

M JE File and Printer Sharing for Microsoft Networks PackET Sche

Transmission Control Protocol/Intemet Protocol. The default wide area network protocol that provides communication across diverse interconnected networks.

[1 Show icon in notification area when connected

5 The Internet Protocol TCP/IP Properties window opens (the General tab in Windows XP). +_If you have a dynamic IP address click Obtain an IP address automatically. +_If you have a static IP address click Use the following IP Address and fill in the IP address, Subnet mask, and Default gateway fields. + Click Advanced.

NBG410W36G Series Users Guide

General | Altemate Configuration

You can get IP settings assigned automatically if your network supports this capabilty. Dtherwise, you need ta ask your network administrator far the appropriate IP settings.

© Obtain an IP address automatically © Use the following IP address:

© Obtain DNS server address automatically

© Use the following DNS server addresses:

6 If you do not know your gateway's IP address, remove any previously installed gateways in the IP Settings tab and click OK.

Do one or more of the following if you want to configure additional IP addresses:

+ Inthe IP Settings tab, in IP addresses, click Add.

+ In TCP/IP Address, type an IP address in IP address and a subnet mask in Subnet mask, and then click Add.

+ Repeat the above two steps for each IP address you want to add.

+ _Configure additional default gateways in the IP Settings tab by clicking Add in Default gateways.

+_In TCP/IP Gateway Address, type the IP address of the default gateway in Gateway. To manually configure a default metric (the number of transmission hops), clear the Automatic metric check box and type a metric in Metric.

+ Repeat the previous three steps for each default gateway you want to add.

+ Click OK when finished.

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Appendix B Setting up Your Computer's IP Address

Figure 230 Windows XP: Advanced TCP/IP Properties d TCP/IP Settings EE]

IP Settings | DNS | WINS | Options

IP address Subnet mask DHCP Enabled

7 Inthe Internet Protocol TCP/IP Properties window (the General tab in Windows XP): + Click Obtain DNS server address automatically if you do not know your DNS server IP address(es). +_If you know your DNS server IP address(es), click Use the following DNS server addresses, and type them in the Preferred DNS server and Alternate DNS server fields.

If you have previously configured DNS servers, click Advanced and then the DNS tab to order them.

NBG410W36G Series Users Guide

Internet Protocol (TCP/IP) Properties

General | Altemate Configuration You can get IP settings assigned automatically if your network supports

this capabilty. Dtherwise, you need to ask your network administrator for the appropriate IP settings.

© Obtain an IP address automatically © Use the following IP address:

© Obtain DNS server address automatically © Use the following DNS server addresses:

8 Click OK to close the Internet Protocol (TCP/IP) Properties window.

9 Click Close (OK in Windows 2000/NT) to close the Local Area Connection Properties window.

10 Close the Network Connections window (Network and Dial-up Connections in Windows 2000/NT).

11 Turn on your ZyXEL Device and restart your computer (if prompted).

Verifying Settings 1 Click Start, AII Programs, Accessories and then Command Prompt.

2 Inthe Command Prompt window, type "ipconfig" and then press [ENTER]. You can also open Network Connections, right-click a network connection, click Status and

then click the Support tab.

1 Click the Apple menu, Control Panel and double-click TCP/IP to open the TCP/IP Control Panel.

NBG410W36G Series User's Guide

Appendix B Setting up Your Computer's IP Address

ADSL Control and Status Appearance

Location Manager Memory

2 Select Ethernet built-in from the Connect via list.

wi Le supplied by server 2 vil be supplied by server >

< will be supplied by server >

“vil be supplied by server >

3 For dynamically assigned settings, select Using DHCP Server from the Configure: list.

4 For statically assigned settings, do the following: + From the Configure box, select Manually.

NBG410W36G Series Users Guide

Appendix B Setting up Your Computer’s IP Address

+ Type your IP address in the IP Address box.

+ Type your subnet mask in the Subnet mask box.

+ Type the IP address of your ZyXEL Device in the Router address box. 5 Close the TCP/IP Control Panel. 6 Click Save if prompted, to save changes to your configuration. 7 Turn on your ZyXEL Device and restart your computer (if prompted).

Verifying Settings Check your TCP/IP properties in the TCP/IP Control Panel window.

1 Click the Apple menu, and click System Preferences to open the System Preferences window.

About This Mac Get Mac OS X Software.

en — System Preferences

Doc Location 2 Click Network in the icon bar.

+ Select Automatic from the Location list. + Select Built-in Ethernet from the Show list. + Click the TCP/IP tab. 3 For dynamically assigned settings, select Using DHCP from the Configure list.

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Appendix B Setting up Your Computer's IP Address

IP Address: 192.168.11.12 168.95.1.1 (Provided by DHCP Server)

Router: 192.168.10.11 Search Domains {Optional)

DHCP Client ID: (Optional)

Example: apple.com, earthlink.net Ethernet Address: 00:05:02:43:93:ff

O] Click the lock to prevent further changes. Appiy Now

4 For statically assigned settings, do the following:

+ From the Configure box, select Manually.

+ Type your IP address in the IP Address box.

+ Type your subnet mask in the Subnet mask box.

+ Type the IP address of your ZyXEL Device in the Router address box. 5 Click Apply Now and close the window. 6 Turn on your ZyXEL Device and restart your computer (if prompted).

Verifying Settings Check your TCP/IP properties in the Network window.

This section shows you how to configure your computer’s TCP/IP settings in Red Hat Linux 9.0. Procedure, screens and file location may vary depending on your Linux distribution and release version.

372 NBG410W3G Series Users Guide

Appendix B Setting up Your Computer’s IP Address

Æ Make sure you are logged in as the root administrator.

Using the K Desktop Environment (KDE)

Follow the steps below to configure your computer IP address using the KDE.

1 Click the Red Hat button (located on the bottom left corner), select System Setting and click Network.

Figure 236 Red Hat 9.0: KDE: Network Configuration: Devices

New Edt Copy Delete Actvate Deactivate

Devices Hardware |DNS |Hosts

HIT) You may configure network devices associated with 4! LE) physical hardare here. Multiple logcal devices can be F©) associated with a single piece of hardware.

[Protle[status [evice [nickname rype

fs osvice. 2 Double-click on the profile of the network card you wish to configure. The Ethernet Device General screen displays as shown.

Figure 237 Red Hat 9.0: KDE: Ethernet Device: General

[M Ethernet Device CE General |Route | Hardware Device |

ctivate device when computer starts

[] Allow all users to enable and disable the device

© Automatically obtain 1P address settings with:

DHCP Settings Hostname (optional: F1 Automatically obtain DNS information from provider

O Statically set IP addresses: Manual IP Address Setting

NBG410W3G Series Users Guide 373

Appendix B Setting up Your Computer's IP Address

+_If you have a dynamic IP address, click Automatically obtain IP address settings with and select dhcp from the drop down list.

+_If you have a static IP address, click Statically set IP Addresses and fill in the Address, Subnet mask, and Default Gateway Address fields.

3 Click OK to save the changes and close the Ethernet Device General screen.

4 If you know your DNS server IP address(es), click the DNS tab in the Network Configuration screen. Enter the DNS server information in the fields provided.

Figure 238 Red Hat 9.0: KDE: Network Configuration: DNS

ta Configuration BEBE Ele Profile Help B # © ©

New Edit Copy D Devices |Hardware| DNS | Hosts

You may configure the system's hostname, domain, name servers, and search domain. Name servers are used to look up other hosts on the network.

] Secondary DNS: ] Zeriary DNS ]

[Active Profile: Common (modified)

5 Click the Devices tab.

6 Click the Activate button to apply the changes. The following screen displays. Click Yes to save the changes in all screens.

Figure 239 Red Hat 9.0: KDE: Network Configuration: Activate RTE ACE)

(2 redhat-config-network:

You have made some changes in your configuration. To activate the nenwork device eth0, the changes have to be saved.

Do you want to continue?

7 After the network card restart process is complete, make sure the Status is Active in the Network Configuration screen.

Using Configuration Files

Follow the steps below to edit the network configuration files and set your computer IP address.

1 Assuming that you have only one network card on the computer, locate the ifconfig- eth0 configuration file (where eth0 is the name of the Ethernet card). Open the configuration file with any plain text editor. +_If you have a dynamic IP address, enter dhcp in the BOOTPROTO= field. The

following figure shows an example.

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Appendix B Setting up Your Computer’s IP Address

+_If you have a static IP address, enter static in the BOOTPROTO= field. Type IPADDR= followed by the IP address (in dotted decimal notation) and type NETMASK= followed by the subnet mask. The following example shows an example where the static IP address is 192.168.1.10 and the subnet mask is 255.255.255.0.

Figure 241 Red Hat 9.0: Static IP Address Setting in ifconfig-eth0

DEVICE=eth0 ONBOOT-yes BOOTPROTO=static IPADDR=192.168.1.10 NETMASK=255.255.255.0 USERCTL=no PEERDNS=yes TYPE-Ethernet

2 If you know your DNS server IP address(es), enter the DNS server information in the

resolv.conf file in the /etc directory. The following figure shows an example where two DNS server IP addresses are specified.

Figure 242 Red Hat 9.0: DNS Settings in resolv.conf

nameserver 172.23.5.1 nameserver 172.23.5.2

3 After you edit and save the configuration files, you must restart the network card. Enter

./network restart inthe /etc/rc.d/init.d directory. The following figure shows an example.

Figure 243 Red Hat 9.0: Restart Ethernet Card

Appendix B Setting up Your Computer's IP Address

Enter ifconfig in a terminal screen to check your TCP/IP properties.

[root@localhost]# ifconfig eth0 Link encap:Ethernet HWaddr 00:50:BA:72:5B:44 inet addr:172.23.19.129 Bcast:172.23.19.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:717 errors:0 dropped:0 overruns:0 frame:0 TX packets:13 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:100 RX bytes:730412 (713.2 Kb) TX bytes:1570 (1.5 Kb Interrupt:10 Base address :0x1000 [root@localhost]4#

376 NBG410W3G Series Users Guide

IP Addresses and Subnetting

This appendix introduces IP addresses and subnet masks.

IP addresses identify individual devices on a network. Every networking device (including computers, servers, routers, printers, etc.) needs an IP address to communicate across the network. These networking devices are also known as hosts.

Subnet masks determine the maximum number of possible hosts on a network. You can also use subnet masks to divide one network into multiple sub-networks.

Introduction to IP Addresses

One part of the IP address is the network number, and the other part is the host ID. In the same way that houses on a street share a common street name, the hosts on a network share a common network number. Similarly, as each house has its own house number, each host on the network has its own unique identifying number - the host ID. Routers use the network number to send packets to the correct network, while the host ID determines to which host on the network the packets are delivered.

An IP address is made up of four parts, written in dotted decimal notation (for example, 192.168.1.1). Each of these four parts is known as an octet. An octet is an eight-digit binary number (for example 11000000, which is 192 in decimal notation).

Therefore, each octet has a possible range of 00000000 to 11111111 in binary, or 0 to 255 in decimal.

The following figure shows an example IP address in which the first three octets (192.168.1) are the network number, and the fourth octet (16) is the host ID.

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Appendix C IP Addresses and Subnetting

L How much of the IP address is the network number and how much is the host ID varies according to the subnet mask.

À subnet mask is used to determine which bits are part of the network number, and which bits are part of the host ID (using a logical AND operation). The term “subnet” is short for “sub- network”.

À subnet mask has 32 bits. If a bit in the subnet mask is a “1” then the corresponding bit in the IP address is part of the network number. If a bit in the subnet mask is “0” then the corresponding bit in the IP address is part of the host ID.

The following example shows a subnet mask identifying the network number (in bold text) and host ID of an IP address (192.168.1.2 in decimal).

Table 122 IP Address Network Number and Host ID Example

mor (a. (en [amocrer (168) (1)

By convention, subnet masks always consist of a continuous sequence of ones beginning from the leftmost bit of the mask, followed by a continuous sequence of zeros, for a total number of 32 bits.

Subnet masks can be referred to by the size of the network number part (the bits with a “1” value). For example, an “8-bit mask” means that the first 8 bits of the mask are ones and the remaining 24 bits are zeroes.

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Appendix C IP Addresses and Subnetting

Subnet masks are expressed in dotted decimal notation just like IP addresses. The following examples show the binary and decimal notation for 8-bit, 16-bit, 24-bit and 29-bit subnet

masks. Table 123 Subnet Masks BINARY DECIMAL 1ST 2ND 3RD OCTET OCTET OCTET ATH OCTET

8-bit mask 11111111 00000000 00000000 00000000 255.0.0.0

16-bit mask | 11111111 11111111 00000000 00000000 255.255.0.0 24-bit mask | 11111111 11111111 11111111 00000000 255.255.255.0 29-bit mask | 11111111 11111111 11111111 11111000 255.255.255.248

The size of the network number determines the maximum number of possible hosts you can have on your network. The larger the number of network number bits, the smaller the number of remaining host ID bits.

An IP address with host IDs of all zeros is the IP address of the network (192.168.1.0 with a 24-bit subnet mask, for example). An IP address with host IDs of all ones is the broadcast address for that network (192.168.1.255 with a 24-bit subnet mask, for example).

As these two IP addresses cannot be used for individual hosts, calculate the maximum number of possible hosts in a network as follows: Table 124 Maximum Host Numbers

SUBNET MASK HOST ID SIZE MAXIMUM NUMBER OF HOSTS 8bits | 255.0.0.0 24 bits 2242 16777214 16bits | 255.255.0.0 16 bits 216-2 65534 24 bits |255.255.2550 |8bits 2-2 254 29 bits | 255.255.255.248 | 3 bits 2-2 6 Notation

Since the mask is always a continuous number of ones beginning from the left, followed by a continuous number of zeros for the remainder of the 32 bit mask, you can simply specify the

number of ones instead of writing the value of each octet. This is usually specified by writing a “/” followed by the number of bits in the mask after the addres

For example, 192.1.1.0 /25 is equivalent to saying 192.1.1.0 with subnet mask 255.255.255.128.

The following table shows some possible subnet masks using both notations. Table 125 Alternative Subnet Mask Notation

ALTERNATIVE |LASTOCTET |LAST OCTET SUBNET MASK | NOTATION (BINARY) (DECIMAL) 255.255.255.0 124 0000 0000 0 255.255.255.128 |/25 1000 0000 128

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Appendix C IP Addresses and Subnetting

Table 125 Alternative Subnet Mask Notation (continued)

sunermasx [AGEN [tte BR 255.255.255.192 |/26 1100 0000 192 255.255.255.224 |/27 1110 0000 224 255.255.255.240 |/28 1111 0000 240 255.255.255.248 |/29 1111 1000 248 255.255.255.252 |/30 1111 1100 252 Subnetting

You can use subnetting to divide one network into multiple sub-networks. In the following example a network administrator creates two sub-networks to isolate a group of servers from the rest of the company network for security reasons.

In this example, the company network address is 192.168.1.0. The first three octets of the address (192.168.1) are the network number, and the remaining octet is the host ID, allowing a maximum of 28 — 2 or 254 possible hosts.

The following figure shows the company network before subnetting.

Figure 246 Subnetting Example: Before Subnetting

‘ * Ed —— % (BR : __— : | | = Internet RSS 8 ) (5 1 C4

ELLE LLLLLLLLL LS You can “borrow” one of the host ID bits to divide the network 192.168.1.0 into two separate sub-networks. The subnet mask is now 25 bits (255.255.255.128 or /25).

The “borrowed” host ID bit can have a value of either 0 or 1, allowing two subnets; 192.168.1.0 /25 and 192.168.1.128 /25.

The following figure shows the company network after subnetting. There are now two sub- networks, A and B.

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Appendix C IP Addresses and Subnetting

In à 25-bit subnet the host ID has 7 bits, so each sub-network has a maximum of 272 or 126 possible hosts (a host ID of all zeroes is the subnet’s address itself, all ones is the subnet’s broadcast address).

192.168.1.0 with mask 255.255.255.128 is subnet A itself, and 192.168.1.127 with mask 255.255.255.128 is its broadcast address. Therefore, the lowest IP address that can be assigned to an actual host for subnet A is 192.168.1.1 and the highest is 192.168.1.126.

Similarly, the host ID range for subnet B is 192.168.1.129 to 192.168.1.254.

Example: Four Subnets

The previous example illustrated using a 25-bit subnet mask to divide a 24-bit address into two subnets. Similarly, to divide a 24-bit address into four subnets, you need to “borrow” two host 1D bits to give four possible combinations (00, 01, 10 and 11). The subnet mask is 26 bits Q@1111111.11111111.11111111.11000000) or 255.255.255.192.

Each subnet contains 6 host ID bits, giving 26 - 2 or 62 hosts for each subnet (a host ID of all zeroes is the subnet itself, all ones is the subnet’s broadcast address).

LAST OCTET BIT IP/SUBNET MASK NETWORK NUMBER VALUE IP Address (Decimal) 192.168.1. 0 IP Address (Binary) 11000000.10101000.00000001. 00000000 Subnet Mask (Binary) 11111111.11111111.11111111. 11000000 Subnet Address: Lowest Host ID: 192.168.1.1 192.168.1.0 Broadcast Address: Highest Host ID: 192.168.1.62 192.168.1.63

Appendix C IP Addresses and Subnetting

Subnet Address: Lowest Host ID: 192.168.1.65

Broadcast Address: Highest Host ID: 192.168.1.126

Subnet Address: Lowest Host ID: 192.168.1.129

Broadcast Address: Highest Host ID: 192.168.1.190

Subnet Address: Lowest Host ID: 192.168.1.193

Broadcast Address: Highest Host ID: 192.168.1.254

Example: Eight Subnets

Similarly, use a 27-bit mask to create eight subnets (000, 111).

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Appendix C IP Addresses and Subnetting

Table 130 Eight Subnets (continued)

SUBNET | ÂDDRESS FIRSTADDRESS |AôbRess [ADDRESS | 5 128 129 158 159 6 160 161 190 191 7 192 193 222 223 8 224 225 254 255

The following table is a summary for subnet planning on a network with a 24-bit network

Table 132 16-bit Network Number Subnet Planning

The following table is a summary for subnet planning on a network

with a 16-bit network

NO TORROWED” | SUBNET MASK No. SUBNETS | NO-NOSTS PER 1 255.255.128.0 (/17) 32766 2 255.255.192.0 (/18) 16382 3 255.255.224.0 (/19) 8 8190 4 255.255.240.0 (/20) 16 4094 5 255.255.248.0 (/21) 32 2046 6 255.255.252.0 (/22) 64 1022 7 255.255.254.0 (/23) 128 510

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Appendix C IP Addresses and Subnetting

Table 132 16-bit Network Number Subnet Planning (continued)

NO. “BORROWED” NO. HOSTS PER HOST BITS SUBNET MASK NO. SUBNETS | SUBNET

14 255.255.255.252 (/30) 16384 2

15 255.255.255.254 (/31) 32768 1

Configuring IP Addresses

Where you obtain your network number depends on your particular situation. If the ISP or your network administrator assigns you a block of registered IP addresses, follow their instructions in selecting the IP addresses and the subnet mask.

Ifthe ISP did not explicitly give you an IP network number, then most likely you have a single user account and the ISP will assign you a dynamic IP address when the connection is established. If this is the case, it is recommended that you select a network number from 192.168.0.0 to 192.168.255.0. The Internet Assigned Number Authority (ANA) reserved this block of addresses specifically for private use; please do not use any other number unless you are told otherwise. You must also enable Network Address Translation (NAT) on the ZyXEL Device.

Once you have decided on the network number, pick an IP address for your ZyXEL Device that is easy to remember (for instance, 192.168.1.1) but make sure that no other device on your network is using that IP address.

The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device will compute the subnet mask automatically based on the IP address that you entered. You don't need to change the subnet mask computed by the ZyXEL Device unless you are instructed to do otherwise.

Private IP Addresses

Every machine on the Internet must have a unique address. If your networks are isolated from the Internet (running only between two branch offices, for example) you can assign any IP addresses to the hosts without problems. However, the Internet Assigned Numbers Authority (IANA) has reserved the following three blocks of IP addresses specifically for private networks:

+ 10.000 —10.255.255.255 + 172.16.0.0 —172.31.255.255 + _192.168.0.0 — 192.168.255.255

You can obtain your IP address from the IANA, from an ISP, or it can be assigned from a private network. If you belong to a small organization and your Internet access is through an ISP, the ISP can provide you with the Internet addresses for your local networks. On the other hand, if you are part of a much larger organization, you should consult your network administrator for the appropriate IP addres

Regardless of your particular situation, do not create an arbitrary IP address; always follow the guidelines above. For more information on address assignment, please refer to RFC 1597, Address Allocation for Private Internets and RFC 1466, Guidelines for Management of IP Address Space.

NBG410W36G Series Users Guide

The following table lists some commonly-used services and their associated protocols and port numbers. For a comprehensive list of port numbers, ICMP type/code numbers and services, visit the IANA (Internet Assigned Number Authority) web site.

+ Name: This is a short, descriptive name for the service. You can use this one or create a different one, if you like.

+ Protocol: This is the type of IP protocol used by the service. If this is TCP/UDP, then the service uses the same port number with TCP and UDP. If this is USER-DEFINED, the Port(s) is the IP protocol number, not the port number.

+_Port(s): This value depends on the Protocol. Please refer to RFC 1700 for further information about port numbers.

+ _Ifthe Protocol is TCP, UDP, or TCP/UDP, this is the IP port number. + _Ifthe Protocol is USER, this is the IP protocol number.

+ Description: This is a brief explanation of the applications that use this service or the

situations in which this service is used.

Table 133 Commonly Used Services

NAME PROTOCOL PORT(S) |DESCRIPTION User-Defined 51 The IPSEC AH (Authentication Header)

(IPSEC_TUNNEL) tunneling protocol uses this service.

AIM/New-ICQ TCP 5190 AOL's Internet Messenger service. It is also used as a listening port by ICQ.

AUTH TCP 113 Authentication protocol used by some servers.

BGP TCP 179 Border Gateway Protocol.

BOOTP_CLIENT UDP 68 DHCP Client.

CU-SEEME TCP 7648 A popular videoconferencing solution from

UDP 24032 White Pines Software.

DNS TCP/UDP 53 Domain Name Server, a service that matches web names (e.g. www.zyxel.com) to IP numbers.

ESP User-Defined 50 The IPSEC ESP (Encapsulation Security

(IPSEC_TUNNEL) Protocol) tunneling protocol uses this service.

FINGER TCP 79 Finger is a UNIX or Internet related command that can be used to find out if a user is logged on.

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Appendix D Common Services

Table 133 Commonly Used Services (continued)

NAME PROTOCOL PORT(S) |DESCRIPTION FTP TCP 20 File Transfer Program, a program to enable TCP 21 fast transfer of files, including large files that may not be possible by e-mail.

H.323 TCP 1720 NetMeeting uses this protocol.

HTTP TCP 80 Hyper Text Transfer Protocol - a client/ server protocol for the world wide web.

HTTPS TCP 443 HTTPS is a secured http session often used in e-commerce.

ICMP User-Defined 1 Internet Control Message Protocol is often used for diagnostic or routing purposes.

ICQ UDP 4000 This is a popular Internet chat program.

IGMP (MULTICAST) | User-Defined 2 Internet Group Management Protocol is used when sending packets to a specific group of hosts.

IKE UDP 500 The Internet Key Exchange algorithm is used for key distribution and management.

IRC TCP/UDP 6667 This is another popular Internet chat program.

MSN Messenger TCP 1863 Microsoft Networks’ messenger service uses this protocol.

NEW-ICQ TCP 5190 An Internet chat program.

NEWS TCP 144 A protocol for news groups.

NFS UDP 2049 Network File System - NFS is a client/ server distributed file service that provides transparent file sharing for network environments.

NNTP TCP 119 Network News Transport Protocol is the delivery mechanism for the USENET newsgroup service.

PING User-Defined 1 Packet INternet Groper is a protocol that sends out ICMP echo requests to test whether or not a remote host is reachable.

POP3 TCP 110 Post Office Protocol version 3 lets a client computer get e-mail from a POP3 server through a temporary connection (TCP/IP or other).

PPTP TCP 1723 Point-to-Point Tunneling Protocol enables secure transfer of data over public networks. This is the control channel.

PPTP_TUNNEL User-Defined 47 PPTP (Point-to-Point Tunneling Protocol)

(GRE) enables secure transfer of data over public networks. This is the data channel.

RCMD TCP 512 Remote Command Service.

REAL_AUDIO TCP 7070 A streaming audio service that enables real time sound over the web.

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Appendix D Common Services

Table 133 Commonly Used Services (continued)

NAME PROTOCOL PORT(S)

Simple Mail Transfer Protocol is the

message-exchange standard for the Internet. SMTP enables you to move messages from one e-mail server to another.

Traps for use with the SNMP (RFC:1215).

Structured Query Language is an interface to access data on many different types of database systems, including mainframes, midrange systems, UNIX systems and network servers.

Syslog allows you to send system logs to a UNIX server.

Telnet is the login and terminal emulation protocol common on the Internet and in UNIX environments. It operates over TCP/ IP networks. Its primary function is to allow users to log into remote host systems.

Trivial File Transfer Protocol is an Internet file transfer protocol similar to FTP, but uses the UDP (User Datagram Protocol) rather than TCP (Transmission Control Protocol).

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Appendix D Common Services

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Wireless LANS Wireless LAN Topologies

This section discusses ad-hoc and infrastructure wireless LAN topologies.

Ad-hoc Wireless LAN Configuration

The simplest WLAN configuration is an independent (Ad-hoc) WLAN that connects a set of computers with wireless adapters (A, B, C). Any time two or more wireless adapters are within range of each other, they can set up an independent network, which is commonly referred to as an ad-hoc network or Independent Basic Service Set (IBSS). The following diagram shows an example of notebook computers using wireless adapters to form an ad-hoc wireless LAN.

Figure 248 Peer-to-Peer Communication in an Ad-hoc Network

À Basic Service Set (BSS) exists when all communications between wireless clients or between a wireless client and a wired network client go through one access point (AP).

Intra-BSS traffic is traffic between wireless clients in the BSS. When Intra-BSS is enabled, wireless client A and B can access the wired network and communicate with each other. When Intra-BSS is disabled, wireless client A and B can still access the wired network but cannot communicate with each other.

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Appendix E Wireless LANS Figure 249 Basic Service Set

ESS An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an access point, with each access point connected together by a wired network. This wired connection between APs is called a Distribution System (DS).

This type of wireless LAN topology is called an Infrastructure WLAN. The Access Points not only provide communication with the wired network but also mediate wireless network traffic in the immediate neighborhood.

An ESSID (ESS IDentification) uniquely identifies each ESS. AIl access points and their associated wireless clients within the same ESS must have the same ESSID in order to communicate.

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Appendix E Wireless LANs

Figure 250 Infrastructure WLAN Channel

À channel is the radio frequency(ies) used by wireless devices to transmit and receive data. Channels available depend on your geographical area. You may have a choice of channels (for your region) so you should use a channel different from an adjacent AP (access point) to reduce interference. Interference occurs when radio signals from different access points overlap causing interference and degrading performance.

Adjacent channels partially overlap however. To avoid interference due to overlap, your AP should be on a channel at least five channels away from a channel that an adjacent AP is using. For example, if your region has 11 channels and an adjacent AP is using channel 1, then you need to select a channel between 6 or 11.

RTS/CTS A hidden node occurs when two stations are within range of the same access point, but are not within range of each other. The following figure illustrates a hidden node. Both stations (STA) are within range of the access point (AP) or wireless gateway, but out-of-range of each other, so they cannot "hear" each other, that is they do not know if the channel is currently being used. Therefore, they are considered hidden from each other.

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Appendix E Wireless LANS

Figure 251 RTS/CTS CTS Range

Station AP Station B When station A sends data to the AP, it might not know that the station B is already using the channel. If these two stations send data at the same time, collisions may occur when both sets of data arrive at the AP at the same time, resulting in a loss of messages for both stations.

RTS/CTS is designed to prevent collisions due to hidden nodes. An RTS/CTS defines the biggest size data frame you can send before an RTS (Request To Send)/CTS (Clear to Send) handshake is invoked.

When a data frame exceeds the RTS/CTS value you set (between 0 to 2432 bytes), the station that wants to transmit this frame must first send an RTS (Request To Send) message to the AP for permission to send it. The AP then responds with a CTS (Clear to Send) message to all other stations within its range to notify them to defer their transmission. It also reserves and confirms with the requesting station the time frame for the requested transmission.

Stations can send frames smaller than the specified RTS/CTS directly to the AP without the RTS (Request To Send)/CTS (Clear to Send) handshake.

You should only configure RTS/CTS if the possibility of hidden nodes exists on your network and the "cost" of resending large frames is more than the extra network overhead involved in the RTS (Request To Send)/CTS (Clear to Send) handshake.

Ifthe RTS/CTS value is greater than the Fragmentation Threshold value (see next), then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size.

Enabling the RTS Threshold causes redundant network overhead that could negatively affect the throughput performance instead of providing a remedy.

Fragmentation Threshold

À Fragmentation Threshold is the maximum data fragment size (between 256 and 2432 bytes) that can be sent in the wireless network before the AP will fragment the packet into smaller data frames.

À large Fragmentation Threshold is recommended for networks not prone to interference while you should set a smaller threshold for busy networks or networks that are prone to interference.

NBG410W36G Series Users Guide

Ifthe Fragmentation Threshold value is smaller than the RTS/CTS value (see previously) you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will be fragmented before they reach RTS/CTS size.

Preamble is used to signal that data is coming to the receiver. Short and long refer to the length of the synchronization field in a packet.

Short preamble increases performance as less time sending preamble means more time for sending data. All IEEE 802.11 compliant wireless adapters support long preamble, but not all support short preamble.

Use long preamble if you are unsure what preamble mode other wireless devices on the network support, and to provide more reliable communications in busy wireless networks.

Use short preamble if you are sure all wireless devices on the network support it, and to provide more efficient communications.

Use the dynamic setting to automatically use short preamble when all wireless devices on the network support it, otherwise the ZyXEL Device uses long preamble.

EE The wireless devices MUST use the same preamble mode in order to communicate.

IÉËÉE 802.119 Wireless LAN IEEE 802.11g is fully compatible with the IEEE 802.11b standard. This means an IEEE 802.11b adapter can interface directly with an IEEE 802.11g access point (and vice versa) at 11 Mbps or lower depending on range. IEEE 802.11g has several intermediate rate steps between the maximum and minimum data rates. The IEEE 802.11g data rate and modulation are as follows:

Table 134 IEEE 802.11g

DATA RATE (MBPS) | MODULATION

1 DBPSK (Differential Binary Phase Shift Keyed) 2 DQPSK (Differential Quadrature Phase Shift Keying) 5.5/11 CCK (Complementary Code Keying)

6/9/12/18/24/36/48/54 | OFDM (Orthogonal Frequency Division Multiplexing)

Wireless Security Overview

Wireless security is vital to your network to protect wireless communication between wireless clients, access points and the wired network.

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Appendix E Wireless LANS Wireless security methods available on the ZyXEL Device are data encryption, wireless client authentication, restricting access by device MAC address and hiding the ZyXEL Device identity.

The following figure shows the relative effectiveness of these wireless security methods available on your ZyXEL Device.

Table 135 Wireless Security Levels

SECURITY LEVEL SECURITY TYPE Least Unique SSID (Default)

Secure Unique SSID with Hide SSID Enabled

IÈEE802.1x EAP with RADIUS Server Authentication

Wi-Fi Protected Access (WPA) Most Secure WPA2

Æ You must enable the same wireless security settings on the ZyXEL Device and on all wireless clients that you want to associate with it.

In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to support extended authentication as well as providing additional accounting and control features. It is supported by Windows XP and a number of network devices. Some advantages of IEEE 802.1x are:

+ _ User based identification that allows for roaming.

+_ Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for centralized user profile and accounting management on a network RADIUS server.

+ Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional authentication methods to be deployed with no changes to the access point or the wireless clients.

RADIUS RADIUS is based on a client-server model that supports authentication, authorization and accounting. The access point is the client and the server is the RADIUS server. The RADIUS server handles the following tasks:

+ Authentication Determines the identity of the users. + Authorization

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Appendix E Wireless LANs

Determines the network services available to authenticated users once they are connected to the network.

+ Accounting Keeps track of the client’s network activity.

RADIUS is a simple package exchange in which your AP acts as a message relay between the wireless client and the network RADIUS server.

Types of RADIUS Messages

The following types of RADIUS messages are exchanged between the access point and the RADIUS server for user authentication: + Access-Request Sent by an access point requesting authentication. + Access-Reject Sent by a RADIUS server rejecting access. + Access-Accept Sent by a RADIUS server allowing access. + Access-Challenge

Sent by a RADIUS server requesting more information in order to allow access. The access point sends a proper response from the user and then sends another Access-Request message.

The following types of RADIUS messages are exchanged between the access point and the RADIUS server for user accounting: + Accounting-Request Sent by the access point requesting accounting. + Accounting-Response Sent by the RADIUS server to indicate that it has started or stopped accounting. In order to ensure network security, the access point and the RADIUS server use a shared secret key, which is a password, they both know. The key is not sent over the network. In

addition to the shared key, password information exchanged is also encrypted to protect the network from unauthorized access.

Types of EAP Authentication

This section discusses some popular authentication types: EAP-MD5, EAP-TLS, EAP-TTLS, PEAP and LEAP. Your wireless LAN device may not support all authentication types.

EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the IEEE 802.1x transport mechanism in order to support multiple types of user authentication. By using EAP to interact with an EAP-compatible RADIUS server, an access point helps a wireless station and a RADIUS server perform authentication.

The type of authentication you use depends on the RADIUS server and an intermediary AP(s) that supports IEEE 802.1x. .

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Appendix E Wireless LANS For EAP-TLS authentication type, you must first have a wired connection to the network and obtain the certificate(s) from a certificate authority (CA). A certificate (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the identity of each certificate owner.

EAP-MD5 (Message-Digest Algorithm 5)

MDS authentication is the simplest one-way authentication method. The authentication server sends a challenge to the wireless client. The wireless client ‘proves” that it knows the password by encrypting the password with the challenge and sends back the information. Password is not sent in plain text.

However, MD5 authentication has some weaknesses. Since the authentication server needs to get the plaintext passwords, the passwords must be stored. Thus someone other than the authentication server may access the password file. In addition, it is possible to impersonate an authentication server as MDS authentication method does not perform mutual authentication. Finally, MDS authentication method does not support data encryption with dynamic session key. You must configure WEP encryption keys for data encryption.

EAP-TLS (Transport Layer Security)

With EAP-TLS, digital certifications are needed by both the server and the wireless clients for mutual authentication. The server presents a certificate to the client. After validating the identity of the server, the client sends a different certificate to the server. The exchange of certificates is done in the open before a secured tunnel is created. This makes user identity vulnerable to passive attacks. A digital certificate is an electronic ID card that authenticates the sender’s identity. However, to implement EAP-TLS, you need a Certificate Authority (CA) to handle certificates, which imposes a management overhead.

EAP-TTLS (Tunneled Transport Layer Service)

EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for only the server-side authentications to establish a secure connection. Client authentication is then done by sending username and password through the secure connection, thus client identity is protected. For client authentication, EAP-TTLS supports EAP methods and legacy authentication methods such as PAP, CHAP, MS-CHAP and MS-CHAP v2.

PEAP (Protected EAP)

LEAP Like EAP-TTLS, server-side certificate authentication is used to establish a secure connection, then use simple username and password methods through the secured connection to authenticate the clients, thus hiding client identity. However, PEAP only supports EAP methods, such as EAP-MDS5, EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card), for client authentication. EAP-GTC is implemented only by Cisco.

LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE 802.1x.

NBG410W36G Series Users Guide

Appendix E Wireless LANs

Dynamic WEP Key Exchange

The AP maps a unique key that is generated with the RADIUS server. This key expires when the wireless connection times out, disconnects or reauthentication times out. À new WEP key is generated each time reauthentication is performed.

If this feature is enabled, it is not necessary to configure a default encryption key in the wireless security configuration screen. You may still configure and store keys, but they will not be used while dynamic WEP is enabled.

paf EAP-MDS cannot be used with Dynamic WEP Key Exchange

For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and PEAP) use dynamic keys for data encryption. They are often deployed in corporate environments, but for public deployment, a simple user name and password pair is more practical. The following table is a comparison of the features of authentication types.

Table 136 Comparison of EAP Authentication Types

EAP-MD5 EAP-TLS |EAP-TTLS PEAP LEAP Mutual Authentication No Yes Yes Yes Yes Certificate — Client No Yes Optional Optional No Certificate — Server No Yes Yes Yes No Dynamic Key Exchange No Yes Yes Yes Yes Credential Integrity None Strong Strong Strong Moderate Deployment Difficulty Easy Hard Moderate Moderate Moderate Client Identity Protection No No Yes Yes No

Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2 (IEEE 802.11i) is a wireless security standard that defines stronger encryption, authentication and key management than WPA.

Key differences between WPA or WPA2 and WEP are improved data encryption and user authentication.

Ifboth an AP and the wireless clients support WPA2 and you have an external RADIUS server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server, you should use WPA2-PSK (WPA2-Pre-Shared Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a wireless client will be granted access to a WLAN.

If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending on whether you have an external RADIUS server or not.

Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is less secure than WPA or WPA2.

NBG410W3G Series Users Guide 397

Appendix E Wireless LANS Encryption

Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol (TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA and WPA2 use Advanced Encryption Standard (AES) in the Counter mode with Cipher block chaining Message authentication code Protocol (CCMP) to offer stronger encryption than TKIP.

TKIP uses 128-bit keys that are dynamically generated and distributed by the authentication server. AES (Advanced Encryption Standard) is a block cipher that uses a 256-bit mathematical algorithm called Rijndael. They both include a per-packet key mixing function, a Message Integrity Check (MIC) named Michael, an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism.

WPA and WPA2 regularly change and rotate the encryption keys so that the same encryption key is never used twice.

The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the PMK to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients. This all happens in the background automatically.

The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data packets, altering them and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, it is assumed that the data has been tampered with and the packet is dropped.

By generating unique data encryption keys for every data packet and by creating an integrity checking mechanism (MIC), with TKIP and AES it is more difficult to decrypt data on a Wi-Fi network than WEP and difficult for an intruder to break into the network.

The encryption mechanisms used for WPA(2) and WPA(2)-PSK are the same. The only difference between the two is that WPA(2)-PSK uses a simple common password, instead of user-specific credentials. The common-password approach makes WPA(2)-PSK susceptible to brute-force password-guessing attacks but it’s still an improvement over WEP as it employs a consistent, single, alphanumeric password to derive a PMK which is used to generate unique temporal encryption keys. This prevent all wireless devices sharing the same encryption keys. (a weakness of WEP)

WPA and WPA2 apply IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless clients using an external RADIUS database. WPA2 reduces the number of key exchange messages from six to four (CCMP 4-way handshake) and shortens the time required to connect to a network. Other WPA2 authentication features that are different from WPA include key caching and pre-authentication. These two features are optional and may not be supported in all wireless devices.

Key caching allows a wireless client to store the PMK it derived through a successful authentication with an AP. The wireless client uses the PMK when it tries to connect to the same AP and does not need to go with the authentication process again.

Pre-authentication enables fast roaming by allowing the wireless client (already connecting to an AP) to perform IEEE 802.1x authentication with another AP before connecting to it.

NBG410W36G Series Users Guide

Appendix E Wireless LANs

Wireless Client WPA Supplicants

À wireless client supplicant is the software that runs on an operating system instructing the wireless client how to use WPA. At the time of writing, the most widely available supplicant is the WPA patch for Windows XP, Funk Software's Odyssey client.

The Windows XP patch is a free download that adds WPA capability to Windows XP's built-in "Zero Configuration" wireless client. However, you must run Windows XP to use it.

WPA(2) with RADIUS Application Example

To set up WPA(2), you need the IP address of the RADIUS server, its port number (default is 1812), and the RADIUS shared secret. A WPA(2) application example with an external RADIUS server looks as follows. "A" is the RADIUS server. "DS" is the distribution system.

1 The AP passes the wireless client's authentication request to the RADIUS server.

2 The RADIUS server then checks the user's identification against its database and grants or denies network access accordingly.

3 A 256-bit Pairwise Master Key (PMK) is derived from the authentication process by the RADIUS server and the client.

4 The RADIUS server distributes the PMK to the AP. The AP then sets up a key hierarchy and management system, using the PMK to dynamically generate unique data encryption keys. The keys are used to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients.

Figure 252 WPA(2) with RADIUS Application Example

WPA(2)-PSK Application Example A WPA(2)-PSK application looks as follows. 1 First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key (PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters (including spaces and symbols).

2 The AP checks each wireless client's password and allows it to join the network only if the password matches.

NBG410W36G Series Users Guide 399

Appendix E Wireless LANS

3 The AP and wireless clients generate a common PMK (Pairwise Master Key). The key itself is not sent over the network, but is derived from the PSK and the SSID.

4 The AP and wireless clients use the TKIP or AES encryption process, the PMK and information exchanged in a handshake to create temporal encryption keys. They use these keys to encrypt data exchanged between them.

Figure 253 WPA(2)-PSK Authentication

J Refer to this table to see what other security parameters you should configure for each authentication method or key management protocol type. MAC address filters are not dependent on how you configure these security features.

Table 137 Wireless Security Relational Matrix

AUTHENTICATION MARAGEMENT PRoTOGOL [METHOD |MANUAL KEY | IEEE 8021X Open None No Disable Enable without Dynamic WEP Key

Open WEP No Enable with Dynamic WEP Key Yes Enable without Dynamic WEP Key Yes Disable

Shared WEP No Enable with Dynamic WEP Key Yes Enable without Dynamic WEP Key Yes Disable

WPA TKIP/AES No Enable

An antenna couples RF signals onto air. A transmitter within a wireless device sends an RF signal to the antenna, which propagates the signal through the air. The antenna also operates in reverse by capturing RF signals from the air.

Positioning the antennas properly increases the range and coverage area of a wireless LAN.

Antenna Characteristics

An antenna in the frequency of 2.4GHz (IEEE 802.11b and IEEE 802.11g) or 5GHZz (IEEE

802.11a) is needed to communicate efficiently in a wireless LAN Radiation Pattern

A radiation pattern is a diagram that allows you to visualize the shape of the antenna’s coverage area.

Antenna gain, measured in dB (decibel), is the increase in coverage within the RF beam width. Higher antenna gain improves the range of the signal for better communications.

For an indoor site, each 1 dB increase in antenna gain results in a range increase of approximately 2.5%. For an unobstructed outdoor site, each 1dB increase in gain results in a range increase of approximately 5%. Actual results may vary depending on the network environment.

Antenna gain is sometimes specified in dBi, which is how much the antenna increases the signal power compared to using an isotropic antenna. An isotropic antenna is a theoretical perfect antenna that sends out radio signals equally well in all directions. dBi represents the true gain that the antenna provides.

Types of Antennas for WLAN There are two types of antennas used for wireless LAN applications.

+ Omni-directional antennas send the RF signal out in all directions on a horizontal plane. The coverage area is torus-shaped (like a donut) which makes these antennas ideal for a room environment. With a wide coverage area, it is possible to make circular overlapping coverage areas with multiple access points.

+ Directional antennas concentrate the RF signal in a beam, like a flashlight does with the light from its bulb. The angle of the beam determines the width of the coverage pattern. Angles typically range from 20 degrees (very directional) to 120 degrees (less directional). Directional antennas are ideal for hallways and outdoor point-to-point applications.

NBG410W3G Series Users Guide 401

Appendix E Wireless LANS Positioning Antennas

In general, antennas should be mounted as high as practically possible and free of obstructions. In point-to-point application, position both antennas at the same height and in a direct line of sight to each other to attain the best performance.

For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single AP application, place omni-directional antennas as close to the center of the coverage area as possible.

For directional antennas, point the antenna in the direction of the desired coverage area.

NBG410W36G Series Users Guide

Importing Certificates

This appendix shows importing certificates examples using Internet Explorer 5.

Import ZyXEL Device Certificates into Netscape Navigator

In Netscape Navigator, you can permanently trust the ZyXEL Device’s server certificate by importing it into your operating system as a trusted certification authority. Select Accept This Certificate Permanently in the following screen to do this.

Figure 254 Security Certificate Certified by an Unknown Authority

Unable to very the identity of ZyWALL 70 Factory Defaut Certficate as a trusted ste, Possible reasons for this error:

- Your browser does not recognize the Certificate Authority that issued the ske's certificate. - The site's certficate is incomplete due to à server misconfiguration,

- Vou are connected to à site pretendng to be 2yWALL 70 Factory Default Certficate, possibly to obtan your confidential nformtion.

Please notify the sie's webmaster about this problem,

Before sccepting this certficate, you should examine this sie's certificate carefull. Are you wiling to to accept this certficate for the purpose of identfying the Web ste ZyWALL 70 Factory Default Cerbficate?

© accept this certficate permanentiy © accept this certficate temporarily for this session © Do not accept this certficate and do not connect ta this Web se

Importing the ZyXEL Device’s Certi Explorer

For Internet Explorer to trust a self-signed certificate from the ZyXEL Device, simply import the self-signed certificate into your operating system as a trusted certification authority.

To have Internet Explorer trust a ZyXEL Device certificate issued by a certificate authority,

import the certificate authority’s certificate into your operating system as a trusted certification authority.

The following example procedure shows how to import the ZyXEL Device’s (self-signed) server certificate into your operating system as a trusted certification authority.

NBG410W3G Series Users Guide 403

Appendix F Importing Certificates

1 In Internet Explorer, double click the lock shown in the following screen.

Enter Password and click Login.

a 2 Click Install Certificate to open the Install Certificate wizard.

Figure 256 Certificate General Information before Import CEE ‘x

General | Detais | Certification Path |

Certificate Information

This CA Root certificate is not trusted. To enable trust, install this certificate in the Trusted Root Certification Authorities store.

Issued to: ZyWALL 70 ODAOCSS9BS28

Issued by: ZyWALL 70 00AOCS598528

Valid from 12/31/1999 to 12/24/2029

Fi], mrsstensttement

3 Click Next to begin the Install Certificate wizard.

Welcome to the Certificate Import Wizard

This wizerd helps you copy certficates, certificate trust Ists, and certficate revocation ists from your disk to à certficate store.

A certificate, which is issued by à certification authority, is à confirmation of your identity and contains information ‘used to protect data or to establish secure network connections. À certificate store is the system ares where certficates are kept.

‘To continue, chck Next.

4 Select where you would like to store the certificate and then click Next.

Figure 258 Certificate Import Wizard 2 Écertiicote import wo x]

Certificate Store Certificate stores are system areas where certficates are kept.

5 Click Finish to complete the Import Certificate wizard.

FT Completing the Certificate Import Wizard

You have successfully completed the Certificate Import wizard.

You have specified the Folloning settings: Certificate Rore Selected Automaticaly determned by t Content Certificate Fes |

6 Click Yes to add the ZyXEL Device certificate to the root store.

Figure 260 Root Certificate Store

Root Certificate Store

A Da yau want ta ADD the following certificate to the Root Store?

Subject : ZyWALL 70 00A0CSS98528

Issuer : Self Issued

Time Valdity : Friday, December 31, 1999 through Monday, December 24, 2029 Serial Number : 38604386

Thumbprint (shal) : 48D15E93 45778C9F DASFIADS ACDSC1BC 574308CE Thumbprint (mds) : D34S8DBS CC3748BE ABSOCFB1 A79472D2

Appendix F Importing Certificates

Figure 261 Certificate General Information after Import

EE General | Detais | Certification Path |

Certificate Information

This certificate is intended to: +Ensures the identity of a remote computer

Issued to: ZyWALL 70 00AOCS598528

Issued by: ZyWALL 70 0OAOCSS98528

Valid from 12/31/1999 to 12/24/2029

Enrolling and Importing SSL Client Certificates The SSL client needs a certificate if Authenticate Client Certificates is selected on the ZyXEL Device.

You must have imported at least one trusted CA to the ZyXEL Device in order for the Authenticate Client Certificates to be active (see the Certificates chapter for details).

Apply for a certificate from a Certification Authority (CA) that is trusted by the ZyXEL Device (see the ZyXEL Device’s Trusted CA web configurator screen).

NBG410W36G Series User's Guide

Appendix F Importing Certificates

Figure 262 ZyXEL Device Trusted CA Screen

CERTIFICATES Trusted CA Setting

Subject Issuer Valid From

The CA sends you a package containing the CA's trusted certificate(s), your personal certificate(s) and a password to install the personal certificate(s).

Installing the CA's Certificate

1 Double click the CA's trusted certificate to produce a screen similar to the one shown

General | Detais | Certification Path |

Certificate Information

This certificate is intended to:

+Ensures the identity of a remote computer « +Proves your identity to a remote computer

+Ensures software came from software publisher

eProtects software From alteration after publication

+Protects e-mail messages

+Alows data to be signed with the current time [1

Issuedto: CSO-CA Issued by: CSO-CA Valid from 8/30/2003 to 8/30/2005

2 Click Install Certificate and follow the wizard as shown earlier in this appendix.

Installing Your Personal Certificate(s)

You need a password in advance. The CA may issue the password or you may have to specify

it during the enrollment. Double-click the personal certificate given to you by the CA to

produce a screen similar to the one shown next

1 Click Next to begin the wizard.

Figure 264 Personal Certificate Import Wizard 1

Certificate Import Wizard

Welcome to the Certificate Import Wizard

‘This wizard helps you copy certficates, certificate trust lsts, and certficate revocation ksts from your disk to a certficate store.

À certificate, which is issued by à certification authority, is 8 confirmation of your identity and contains information used to protect data or to establsh secure network connections. À certificate store is the system area where certficates are kept.

‘To continue, click Net.

NBG410W36G Series User's Guide

Appendix F Importing Certificates

2 The file name and path of the certificate you double-clicked should automatically appear in the File name text box. Click Browse if you wish to import a different certificate.

3 Enter the password given to you by the CA.

Password ‘To maintain security, the private key was protected with a password.

Type the password for the private key. Password:

1 Enable strong private key protection. You wi be prompted every me the private key is used by an appkcation if you enable thès option.

1 Mark the private key as exportable

< Back Next > Cancel

4 Have the wizard determine where the certificate should be saved on your computer or select Place all certificates in the following store and choose a different location.

410 NBG410W3G Series Users Guide

ertificat ort Wizard

Certificate Store Certificate stores are system areas where certficates are kept.

Windows can automatically select a certificate store, or you can specify a location For © JAytomatically select the certificate store based on the type of certificate) T Blace al certficates in the following store

5 Click Finish to complete the wizard and begin the import process.

Certificate Import Wizard

Completing the Certificate Import Wizard

You have successfully completed the Certificate Import wizard,

You have specified the following settings:

Certificate Store Selected Automaticaly determned by t PFX D:lProjects_2003-10\CPE2\cp

6 You should see the following screen when the certificate is correctly installed on your

Figure 269 Personal Certificate Import Wizard 6

Gi) The import was successful.

NBG410W36G Series User's Guide

Appendix F Importing Certificates

Use the following procedure to access the ZyXEL Device via HTTPS. 1 Enter ‘https://ZyXEL Device IP Address/ in your browser’s web address field.

Figure 270 Access the ZyXEL Device Via HTTPS 4 about:blank - Microsoft Internet Explorer

| Ele Edit Vew Favorites Too Hep leest > + 7 @ 5 | Search GüFavories GHitoy | Er S mi E © | LAddress [81 htips://192.168.1.1

2 When Authenticate Client Certificates is selected on the ZyXEL Device, the following screen asks you to select a personal certificate to send to the ZyXEL Device. This screen displays even if you only have a single certificate as in the example.

Figure 271 SSL Client Authentication (cent Authenticaton FT Identification

The Web site you want to view requests identification. Select the certficate to use when connecting.

Copyright © 2008 by ZyXEL Communications Corporation.

The contents of this publication may not be reproduced in any part or as a whole, transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or otherwise, without the prior written permission of ZyXEL Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

ZyXEL does not assume any liability arising out of the application or use of any products, or software described herein. Neither does it convey any license under its patent rights nor the patent rights of others. ZyXEL further reserves the right to make changes in any products described herein without notice. This publication is subject to change without notice.

Your use of the ZyXEL Device is subject to the terms and conditions of any related service providers.

ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc. Other trademarks mentioned in this publication are used for identification purposes only and may be properties of their respective owners.

Federal Communications Commission (FCC) Interference Statement The device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: + This device may not cause harmful interference.

+ This device must accept any interference received, including interference that may cause undesired operations.

NBG410W3G Series Users Guide 415

Appendix G Legal Information

This device has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.

If this device does cause harmful interference to radio/television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

1 Reorient or relocate the receiving antenna.

2 Increase the separation between the equipment and the receiver.

3 Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

4 Consult the dealer or an experienced radio/TV technician for help.

FCC Radiation Exposure Statement

+_ This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

+ IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to channels 1 through 11.

+ To comply with FCC RF exposure compliance requirements, a separation distance of at least 20 cm must be maintained between the antenna of this device and all persons.

EE TE RÉ ADRESSE TUE RARES ER RIDER RS » SRRSF a > NS] à RER BNC II ATIRREE RER RETIRE °

Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.

This device has been designed for the WLAN 2.4 GHz network throughout the EC region and Switzerland, with restrictions in France.

416 NBG410W3G Series Users Guide

Appendix G Legal Information

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

Viewing Certifications

1 Gotohttp///wvwwzyxel.com. 2 Select your product on the ZyXEL home page to go to that product's page.

3 Select the certification you wish to view from this page.

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or workmanship for a period of up to two years from the date of purchase. During the warranty period, and upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge for either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to proper operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent product of equal or higher value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product has been modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working conditions.

Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This warranty is in lieu of all other warranties, express or implied, including any implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in no event be held liable for indirect or consequential damages of any kind to the purchaser.

To obtain the services of this warranty, contact your vendor. You may also refer to the warranty policy for the region in which you bought the device at http://www.zyxel.com/web/ support_warranty_info.php.

Register your product online to receive e-mail notices of firmware upgrades and information at www.zyxel.com for global products, or at www.us.zyxel.com for North American products.

In the event of problems that cannot be solved by using this manual, you should contact your vendor. If you cannot contact your vendor, then contact a ZyXEL office for the region in which you bought the device. Regional offices are listed below (see also http:// www.zyxel.com/web/contact_us.php). Please have the following information ready when you contact an office.

Required Information

+ Product model and serial number.

+ Warranty Information.

+ Date that you received your device.

+ Brief description of the problem and the steps you took to solve it.

“+? is the (prefix) number you dial to make an international telephone call.

Corporate Headquarters (Worldwide)

+ Support E-mail: support@zyxel.com.tw + Sales E-mail: sales@zyxel.com.tw

+ Regular Mail: ZyXEL Communications Corp., 6 Innovation Road II, Science Park, Hsinchu 300, Taiwan

China - ZyXEL Communications (Shanghai) Corp. + Support E-mail: cso.zyen@zyxel.cn + Sales E-mail: sales@zyxel.en + Telephone: +86-021-61199055 + Fax: +86-021-52069033

Appendix H Customer Support

Appendix H Customer Support

Appendix H Customer Support

Appendix H Customer Support

+ Address: Room B, 21F., No.333, Sec. 2, Dunhua S. Rd., Da-an District, Taipei

Appendix H Customer Support

+ Regular Mail: ZyXEL Communications UK Ltd., 11 The Courtyard, Eastern Road, Bracknell, Berkshire RG12 2XB, United Kingdom (UK)

3G. See third generation 126

access point 147 See also AP.

address assignment 115, 247

Advanced Encryption Standard See AES.

omni-directional 401

anti-probing 180 AP 147 See also access point. AP (access point) 391 APN (Access Point Name) 130 Application Layer Gateway. See ALG.

applications 35, 36 broadband connection 36

asymmetrical routes 173 vs virtual interfaces 173

Certificate Authority See CA.

verifying fingerprints 196 Certification Authority. See CA. certifications 415

cost of transmission 112 CTS (Clear to Send) 392 custom ports 185 customer support 419

Denial of Service. See Dos. device introduction 35

DHCP 56, 102, 104, 255

NBG410W36G Series User's Guide

stateful inspection 167

TCP maximum incomplete 183 three-way handshake 181 threshold 182

firmware upload 331 fragmentation threshold 392

IP address pool 103, 105, 137 private 102

N NAT 101, 225, 235, 237, 384 application 227 default server IP address 235 definitions 225 how NAT works 226 inside global address 225 inside local address 225 many to many no overload 229 many to many overload 229 many to one 229 mapping types 229

port restricted cone 228

single user account 230

what NAT does 226, 232 NAT traversal 281 navigation panel 52 NBNS 104, 106 NetBlOS 106 NetBlOS Name Server. See NBNS. Network Address Translation. See NAT. Network Basic Input/Output System. See NetBlOS. NNTP service 236 NTP time protocol 329

one minute high 183 one minute low 183 operating temperature 345

encapsulation 61, 120

preamble mode 393 pre-shared key 161

private IP address 102, 115 product overview 35 product registration 417

NBG410W36G Series User's Guide

registration product 417

virtual interfaces vs asymmetrical routes 173 vs triangle routes 173

W WAN IP address 115 warranty 417 note 417 web configurator 43 web site hits 308, 309 WEP key 156 Wi-Fi Protected Access (WPA) 397 Windows Internet Naming Service. See WINS. WINS 104, 106 WINS server 106 wireless client 147 wireless client WPA supplicants 399 wireless LAN introduction 147 wireless network basic guidelines 148 channel 148 encryption 149 example 147 MAC address filter 148 overview 147 security 148 SSID 148 wireless security 148, 393 IEEE 802.1x 157 none 156 overview 148 Static WEP 156 type 148 WPA/WPA2 160 WPA-PSK/WPA2-PSK 161 wireless technologies comparison 127 wizard setup 59 WLAN interference 391 security parameters 400 WPA 397 group key update timer 162 key caching 398 pre-authentication 398 user authentication 398 vs WPA-PSK 398 wireless client supplicant 399

NBG410W36G Series User's Guide

with RADIUS application example 399 WPA2 397

user authentication 398

wireless client supplicant 399

with RADIUS application example 399 WPA2-Pre-Shared Key 397 WPA2-PSK 397, 398

application example 399 WPA-PSK 397, 398