NBG6503 - Routeur ZYXEL - Free user manual and instructions

USER MANUAL NBG6503 ZYXEL

Edition 1, 03/2013 Copyright © 2013 ZyXEL Communications Corporation User’s Guide

KEEP THIS GUIDE FOR FUTURE REFERENCE.

Related Documentation

The Quick Start Guide shows how to connect the NBG6503 and access the Web Configurator

wizards. It also contains a connection diagram and package contents list.

Note: It is recommended you use the Web Configurator to configure the NBG6503.Contents Overview

NBG6503 User’s Guide

Getting to Know Your Router15

1.3 Ways to Manage the Router 15

1.4 Good Habits for Managing the Router 16

1.6 The WPS Button 18

1.7 Wall Mounting 18

2.3 Connect to Internet 22

2.5 Wireless Security 27

3.2.3 Home Screen 33Table of Contents

4.2 What You Can Do 37

4.3 The Log Screen 37

4.6 Packet Statistics 40

4.7 WLAN 2.4G Station Status 41

4.8 WLAN 5G Station Status 41

6.2 What You Can Do 46

6.3 What You Need to Know 46

6.4 Navigation Panel 47

7.2 What You Can Do 57

8.2 What You Can Do 65

8.3 What You Need to Know 65

8.3.1 Setting your Router to AP Mode 66

8.3.2 Accessing the Web Configurator in Access Point Mode 66

8.3.3 Configuring your WLAN, Bandwidth Management and Maintenance Settings 67

9.2 Connecting to the Internet from an Access Point 73

9.3 Configuring Wireless Security Using WPS 73

9.3.1 Push Button Configuration (PBC) 74

9.3.2 PIN Configuration 75

9.4 Enabling and Configuring Wireless Security (No WPS) 77

10.2 What You Can Do 83

10.7 Quality of Service (QoS) Screen 93

10.9 WPS Station Screen 95

11.2 What You Can Do 99

12.2 What You Can Do 109

13.2 What You Can Do 113

14.2 What You Can Do 117

15.2 What You Can Do 123

16.2 What You Can Do 125

16.3 IP Static Route Screen 126

17.2 What You Can Do 129

19.2 What You Can Do 137

Remote Management145Table of Contents

20.2 What You Can Do 145

21.2 What You Can Do 147

22.2 What You Can Do 155

23.1 Power, Hardware Connections, and LEDs 165

23.2 Router Access and Login 166

23.3 Internet Access 167

23.4 Resetting the Router to Its Factory Defaults 169

23.5 Wireless Router/AP Troubleshooting 169

Appendix A IP Addresses and Subnetting171

Appendix B Setting Up Your Computer’s IP Address 181Table of Contents

Appendix D Common Services223

Getting to Know Your Router

1.1 Overview This chapter introduces the main features and applications of the Router. The Router upgrades the speed of your existing wireless network, providing faster network access to mobile users. Making use of IEEE 802.11AC technology, it not only upgrades your network to the next level but also eliminates dead spots, while offering backward compatibility with other IEEE 802.11b/g/n compatible devices.A range of services such as a firewall and content filtering are also available for secure Internet computing. You can use media bandwidth management to efficiently manage traffic on your network. Bandwidth management features allow you to prioritize time-sensitive or highly important applications such as Voice over the Internet (VoIP). 1.2 Applications Your can create the following networks using the Router: • Wired. You can connect network devices via the Ethernet ports of the Router so that they can communicate with each other and access the Internet. • Wireless. Wireless clients can connect to the Router to access network resources.

• WAN. Connect to a broadband modem/router for Internet access.

1.3 Ways to Manage the Router Use any of the following methods to manage the Router.• Web Configurator. This is recommended for everyday management of the Router using a (supported) web browser. • Wireless switch. You can use the built-in switch of the Router to turn the wireless function on and off without opening the Web Configurator. • WPS (Wi-Fi Protected Setup) button. You can use the WPS button or the WPS section of the Web Configurator to set up a wireless network with your Router.Chapter 1 Getting to Know Your Router

NBG6503 User’s Guide

1.4 Good Habits for Managing the Router

Do the following things regularly to make the Router more secure and to manage the Router more

• Change the password. Use a password that’s not easy to guess and that consists of different

types of characters, such as numbers and letters.

• Write down the password and put it in a safe place.

• 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 Router to its factory default settings. If you

backed up an earlier configuration file, you would not have to totally re-configure the Router. You

could simply restore your last configuration.Chapter 1 Getting to Know Your Router

NBG6503 User’s Guide

Figure 1 Front Panel

The following table describes the LEDs and the WPS button.

Table 1 Front Panel LEDs and WPS Button

LED COLOR STATUS DESCRIPTION POWER Green On The Router is receiving power and functioning properly.

Off The Router is not receiving power.

WAN Green On The Router has a successful 10/100MB WAN connection.

Blinking The Router is sending/receiving data through the WAN.

Off The WAN connection is not ready, or has failed.

LAN 1-4 Green On The Router has a successful 10/100MB Ethernet connection.

Blinking The Router is sending/receiving data through the LAN.

Off The LAN is not connected.

WLAN 5 GHz Green On The Router is ready, but is not sending/receiving data through

the wireless LAN 5 GHz band.

Blinking The Router is sending/receiving data through the wireless LAN

Off The wireless LAN 5 GHz band is not ready or has failed.

2.4GHzChapter 1 Getting to Know Your RouterNBG6503 User’s Guide 18

1.6 The WPS Button Your Router supports WiFi Protected Setup (WPS), which is an easy way to set up a secure wireless network. WPS is an industry standard specification, defined by the WiFi Alliance.WPS allows you to quickly set up a wireless network with strong security, without having to configure security settings manually. Each WPS connection works between two devices. Both devices must support WPS (check each device’s documentation to make sure). Depending on the devices you have, you can either press a button (on the device itself, or in its configuration utility) or enter a PIN (a unique Personal Identification Number that allows one device

to authenticate the other) in each of the two devices. When WPS is activated on a device, it has two

minutes to find another device that also has WPS activated. Then, the two devices connect and set up a secure network by themselves. For more information on using WPS, see Section 9.3 on page 73.

You may need screw anchors if mounting on a concrete or brick wall.

1 Select a position free of obstructions on a wall strong enough to hold the weight of the

2 Mark two holes on the wall at the appropriate distance apart for the screws.

Be careful to avoid damaging pipes or cables located inside the wall

when drilling holes for the screws. WLAN 2.4 GHz Green On The Router is ready, but is not sending/receiving data through the wireless LAN 2.4 GHz band. Blinking The Router is sending/receiving data through the wireless LAN 2.4 GHz band.Off The wireless LAN 2.4 GHz band is not ready or has failed.WPS Green On WPS is enabled. Blinking The Router is negotiating a WPS connection with a wireless client.Off The wireless LAN is not ready or has failed.Table 1 Front Panel LEDs and WPS Button (continued)LED COLOR STATUS DESCRIPTION Table 2 Wall Mounting Information Distance between holes 11 cmM4 Screws TwoScrew anchors (optional) TwoChapter 1

NBG6503 User’s Guide

3 If using screw anchors, drill two holes for the screw anchors into the wall. Push the

anchors into the full depth of the holes, then insert the screws into the anchors. Do not

insert the screws all the way in - leave a small gap of about 0.5 cm.

If not using screw anchors, use a screwdriver to insert the screws into the wall. Do not

insert the screws all the way in - leave a gap of about 0.5 cm.

4 Make sure the screws are fastened well enough to hold the weight of the Router with the

5 Align the holes on the back of the Router with the screws on the wall. Hang the Router on

Figure 2 Wall Mounting ExampleChapter 1

20NBG6503 User’s Guide 21 CHAPTER 2

2.1 Overview This chapter provides information on the wizard setup screens in the Web Configurator.The Web Configurator’s wizard setup helps you configure your device to access the Internet. Refer to your ISP for your Internet account information. Leave a field blank if you don’t have that information. 2.2 Accessing the Wizard

Launch your web browser and type "http://192.168.1.1" as the website address. Type "1234" (default) as the password and click Login.Note: The Wizard appears when the Router is accessed for the first time or when you reset the Router to its default factory settings. The Wizard screen opens. Choose your Language and click Connect to Internet. Figure 3 WelcomeChapter 2 Connection Wizard

NBG6503 User’s Guide

2.3 Connect to Internet

The Router offers four Internet connection types. They are Static IP, DHCP, PPPoE, or PPTP. The

wizard attempts to detect which WAN connection type you are using.

Figure 4 Detecting your Internet Connection Type

If the wizard does not detect a connection type, you must select one from the drop-down list box.

Check with your ISP to make sure you use the correct type.

Note: If you get an error message, check your hardware connections. Make sure your

Internet connection is up and running.

The following screen depends on your Internet connection type. Enter the details provided by your

Internet Service Provider (ISP) in the fields (if any).

Figure 5 Internet Connection Type

Your Router detects the following Internet Connection type.

Table 3 Internet Connection Type

CONNECTION TYPE DESCRIPTION Static IP Select the Static IP if an administrator assigns the IP address of your computer.

DHCP Select the DHCP (Dynamic Host Configuration Protocol) option when the WAN port is used

as a regular Ethernet.

PPPoE Select the PPPoE (Point-to-Point Protocol over Ethernet) option for a dial-up connection.

PPTP Select the PPTP (Point-to-Point Tunneling Protocol) option for a dial-up connection, and

your ISP gave you an IP address and/or subnet mask.Chapter 2 Connection Wizard

NBG6503 User’s Guide

2.3.1 Connection Type: DHCP Choose DHCP as the Internet Connection Type when the WAN port is used as a regular

Ethernet. Click Next.

Figure 6 Internet Connection Type: DHCP Note: If you get an error screen after clicking Next, you might have selected the wrong

Internet Connection type. Click Back, make sure your Internet connection is

working and select the right Connection Type. Contact your ISP if you are not sure

of your Internet Connection type.

2.3.2 Connection Type: Static IP Choose Static IP as the Internet Connection Type if your ISP assigned an IP address for your

Internet connection. Click Next.

Figure 7 Internet Connection Type: Static IP The following table describes the labels in this screen.

Table 4 Internet Connection Type: Static IP LABEL DESCRIPTION Internet

Select the Static IP option.

IP Address Enter the IP address provided by your ISP.Chapter 2 Connection Wizard

NBG6503 User’s Guide

2.3.3 Connection Type: PPPoE Point-to-Point Protocol over Ethernet (PPPoE) functions as a dial-up connection. PPPoE is an IETF

(Internet Engineering 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

For the service provider, PPPoE offers an access and authentication method that works with existing

access control systems (for instance, RADIUS).

One of the benefits of PPPoE is the ability to let end users 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 specific users.

Operationally, PPPoE saves significant effort for both the subscriber and the ISP/carrier, as it

requires no specific configuration of the broadband modem at the subscriber's site.

By implementing PPPoE directly on the Router (rather than individual computers), the computers on

the LAN do not need PPPoE software installed, since the Router does that part of the task.

Furthermore, with NAT, all of the LAN's computers will have Internet access.

Figure 8 Internet Connection Type: PPPoE Subnet Mask Enter the IP subnet mask in this field.

Enter the gateway IP address in this field.

Primary DNS 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 computer before you can access it. The Router uses a system DNS

server (in the order you specify here) to resolve domain names for DDNS and the time

Enter the primary DNS server's IP address in the fields provided.

Secondary DNS Enter the secondary DNS server's IP address in the fields provided.

Exit Click this to close the wizard screen without saving.

Back Click this to return to the previous screen.

Next Click this to continue.

Table 4 Internet Connection Type: Static IP (continued)

LABEL DESCRIPTIONChapter 2 Connection Wizard

NBG6503 User’s Guide

The following table describes the labels in this screen.

2.3.4 Connection Type: PPTP 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

PPTP supports on-demand, multi-protocol, and virtual private networking over public networks,

such as the Internet.

Refer to the appendix for more information on PPTP.

The Router supports one PPTP server connection at any given time.

Figure 9 Internet Connection Type: PPTP The following table describes the fields in this screen

Table 5 Internet Connection Type: PPPoE LABEL DESCRIPTION Internet

Select the PPPoE option for a dial-up connection.

Dynamic IP Select this radio button if your ISP did not assign you a fixed IP address.

Static IP Select this radio button, provided by your ISP to give the Router a fixed, unique IP address.

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

Password Type the password associated with the user name above.

Exit Click this to close the wizard screen without saving.

Back Click this to return to the previous screen.

Next Click this to continue.

Table 6 Internet Connection Type: PPTP LABEL DESCRIPTION Internet

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

Dynamic IP Select this radio button if your ISP did not assign you a fixed IP address.Chapter 2 Connection Wizard

NBG6503 User’s Guide

The Router connects to the Internet.

Figure 10 Connecting to the Internet

Note: If the Wizard successfully connects to the Internet, it proceeds to the next step. If

you get an error message, go back to the previous screen and make sure you have

entered the correct information provided by your ISP.

Static IP Select this radio button, provided by your ISP to give the Router a fixed, unique IP address.

PPTP 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 gateway IP address of the PPTP server.

PPTP Server IP Address

Type the server IP address of the PPTP server.

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

Password Type the password associated with the User Name above.

Exit Click this to close the wizard screen without saving.

Back Click this to return to the previous screen.

Next Click this to continue.

Table 6 Internet Connection Type: PPTP (continued)

LABEL DESCRIPTIONChapter 2 Connection Wizard

Change the login password in the following screen. Enter the new password and retype it to

confirm. Click Next to proceed with the Wireless Security screen.

Figure 11 Router Password

2.5 Wireless Security

Configure Wireless Settings. Configure the wireless network settings on your Router in the following

screen. The fields that show up depend on the kind of security you select.

2.5.1 Wireless Security: No Security

Choose No Security in the Wireless Security screen to let wireless devices within range access

your wireless network.

Figure 12 Wireless Security: No SecurityChapter 2 Connection Wizard

NBG6503 User’s Guide

The following table describes the labels in this screen.

2.5.2 Wireless Security: WPA-PSK/WPA2-PSK Choose WPA-PSK or WPA2-PSK security in the Wireless Security screen to set up a password for

your wireless network.

Figure 13 Wireless Security: WPA-PSK/WPA2-PSK The following table describes the labels in this screen.

Table 7 Wireless Security: No Security

LABEL DESCRIPTION Wireless Radio Select a wireless radio from the drop-down list box.

Choose 2.4G Hz to set the security setting for the wireless 2.4G band. Choose 5G Hz to set

the security setting for the wireless 5G band.

Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN.

If you change this field on the Router, make sure all wireless stations use the same SSID in

order to access the network.

Security mode Select a Security level from the drop-down list box.

Choose None to have no wireless LAN security configured. If you do not enable any wireless

security on your Router, your network is accessible to any wireless networking device that is

Exit Click this to close the wizard screen without saving.

Back Click this to return to the previous screen.

Next Click this to continue.

Table 8 Wireless Security: WPA-PSK/WPA2-PSK LABEL DESCRIPTION Wireless Radio Select a wireless radio from the drop-down list box.

Choose 2.4G Hz to set the security setting for the wireless 2.4G band. Choose 5G Hz to set

the security setting for the wireless 5G band.

Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN.

If you change this field on the Router, make sure all wireless stations use the same SSID in

order to access the network.Chapter 2 Connection Wizard

NBG6503 User’s Guide

Congratulations! Open a web browser, such as Internet Explorer, to visit your favorite website.

Note: If you cannot access the Internet when your computer is connected to one of the

Router’s LAN ports, check your connections. Then turn the Router off, wait for a few

seconds then turn it back on. If that does not work, log in to the web configurator

again and check you have typed all information correctly. See the User’s Guide for

Figure 14 Congratulations

You can also click GO to open the Easy Mode Web Configurator of your Router.

You have successfully set up your Router to operate on your network and access the Internet. You

are now ready to connect wirelessly to your Router and access the Internet.

Security mode Select a Security level from the drop-down list box.

Choose WPA-PSK or WPA2-PSK security to configure a Pre-Shared Key. Choose this

option only if your wireless clients support WPA-PSK or WPA2-PSK respectively.

Type from 8 to 63 case-sensitive ASCII characters. You can set up the most secure wireless

connection by configuring WPA in the wireless LAN screens.

Verify Password Retype the password to confirm.

Exit Click this to close the wizard screen without saving.

Back Click this to return to the previous screen.

Next Click this to continue.

Table 8 Wireless Security: WPA-PSK/WPA2-PSK (continued)

LABEL DESCRIPTIONChapter 2 Connection Wizard

Introducing the Web Configurator

3.1 Overview This chapter describes how to access the Router Web Configurator and provides an overview of its screens.The Web Configurator is an HTML-based management interface that allows easy setup and management of the Router via Internet browser. Use Internet Explorer 6.0 and later or Netscape

Navigator 7.0 and later versions or Safari 2.0 or 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.• JavaScript (enabled by default).• Java permissions (enabled by default). Refer to the Troubleshooting chapter (Chapter 23 on page 165) to see how to make sure these functions are allowed in Internet Explorer. 3.2 Accessing the Web Configurator

1 Make sure your Router hardware is properly connected and prepare your computer or computer network to connect to the Router (refer to the Quick Start Guide).2 Launch your web browser.3 Type "http://192.168.1.1" as the website address. Your computer must be in the same subnet in order to access this website address. 3.2.1 Login Screen Note: If this is the first time you are accessing the Web Configurator, you may be redirected to the Wizard. Refer to Chapter 2 on page 21 for the Connection Wizard screens.Chapter 3 Introducing the Web Configurator

NBG6503 User’s Guide

The following table describes the labels in this screen.

3.2.2 Password Screen

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

Figure 16 Change Password Screen

Table 9 Login screen

LABEL DESCRIPTION Password Type "1234" (default) as the password.

Language Select the language you want to use to configure the Web Configurator. Click Login.

This shows the current weather, either in celsius or fahrenheit, of the city you specify in

Section 3.2.3.1 on page 34.

Section 3.2.3.2 on page 34 or Section 22.5 on page 157. The time is in 24-hour format, for

NBG6503 User’s Guide

The following table describes the labels in this screen.

Note: The management session automatically times out when the time period set in the

Administrator Inactivity Timer field expires (default five minutes; go to Chapter

22 on page 155 to change this). Simply log back into the Router if this happens.

If you have previously logged into the Web Configurator but did not click Logout, you may be

redirected to the Home screen.

You can also open this screen by clicking Home ( or ) in the Easy Mode or Expert

The Home screen displays as follows.

Figure 17 Home Screen

The following table describes the labels in this screen.

Table 10 Change Password Screen

LABEL DESCRIPTION New Password Type a new password.

Retype to Confirm Retype the password for confirmation.

Apply Click Apply to save your changes back to the Router.

Ignore Click Ignore if you do not want to change the password this time.

Table 11 Home Screen

LABEL DESCRIPTION Go Click this to open the Easy mode Web Configurator.

Language Select a language to go to the Easy mode Web Configurator in that language and click

You can change the temperature unit and select the location for which you want to know the

Click the icon to change the Weather display.

Figure 18 Change Weather

The following table describes the labels in this screen.

3.2.3.2 Time/Date Edit

One timezone can cover more than one country. You can choose a particular country in which the

Router is located and have the Router display and use the current time and date for its logs.

Click the icon to change the Weather display.

Figure 19 Change Password Screen

The following table describes the labels in this screen.

Note: You can also edit the timezone in Section 22.5 on page 157.

(This is just an example). This shows the current weather, either in celsius or fahrenheit, of

the city you specify in Section 3.2.3.1 on page 34.

(This is just an example). This shows the time (hh:mm:ss) and date (yyyy:mm:dd) of the

timezone you select in Section 3.2.3.2 on page 34 or Section 22.5 on page 157.

Table 11 Home Screen (continued)

LABEL DESCRIPTION Table 12 Change Weather

F Choose which temperature unit you want the Router to display.

Select the location for which you want to know the weather. If the city you want is not listed,

choose one that is closest to it.

Finish Click this to apply the settings and refresh the date and time display.

Table 13 Change Password Screen

LABEL DESCRIPTION Change time

Select the specific country whose current time and date you want the Router to display.

Finish Click this to apply the settings and refresh the weather display.Chapter 3 Introducing the Web Configurator

NBG6503 User’s Guide

3.3 Resetting the Router

If you forget your password or IP address, or you cannot access the Web Configurator, you will need

to use the RESET button at the back of the Router to reload the factory-default configuration file.

This means that you will lose all configurations that you had previously saved, the password will be

reset to “1234” and the IP address will be reset to “192.168.1.1”.

3.3.1 Procedure to Use the Reset Button

1 Make sure the power LED is on.

2 Press the RESET button for longer than 1 second to restart/reboot the Router.

3 Press the RESET button for longer than five seconds to set the Router back to its factory-default

configurations.Chapter 3 Introducing the Web Configurator

4.1 Overview This chapter discusses read-only information related to the device state of the Router. Note: To access the Monitor screens, you can also click the links in the Summary table of the Status screen to view the bandwidth consumed, packets sent/received as well as the status of clients connected to the Router. 4.2 What You Can Do

•Use the Log (Section 4.3 on page 37) screen to see the logs for the activity on the Router.

•Use the BW MGMT Monitor screen (Section 4.4 on page 39) to view the amount of network bandwidth that applications running in the network are using. •Use the DHCP Table screen (Section 4.5 on page 39) to view information related to your DHCP status. •Use the Packet Statistics screen (Section 4.6 on page 40) to view port status, packet specific statistics, the "system up time" and so on. •Use the WLAN 2.4G Station Status screen (Section 4.7 on page 41) to view the wireless stations that are currently associated to the Router through the wireless 2.4G network. •Use the WLAN 5G Station Status screen (Section 4.8 on page 41) to view the wireless stations that are currently associated to the Router through the wireless 5G network. 4.3 The Log Screen The Web Configurator allows you to look at all of the Router’s logs in one location. 4.3.1 View Log

Use the View Log screen to see the logged messages for the Router. The log wraps around and

deletes the old entries after it fills. Select what logs you want to see from the Display drop list. TheChapter 4 Monitor

NBG6503 User’s Guide

log choices depend on your settings in the Log Settings screen. Click Refresh to renew the log

screen. Click Clear to delete all the logs.

You can configure which logs to display in the View Log screen. Go to the Log Settings screen

and select the logs you wish to display. Click Apply to save your settings. Click Refresh to start the

The Bandwidth Management (BW MGMT) Monitor allows you to view the amount of network

bandwidth that applications running in the network are using.

The bandwidth is measured in kilobits per second (kbps).

The monitor shows what kinds of applications are running in the network, the maximum kbps that

each application can use, as well as the percentage of bandwidth it is using.

Figure 22 Summary: BW MGMT Monitor

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 Router’s LAN as a DHCP

server or disable it. When configured as a server, the Router provides the TCP/IP configuration for

the clients. If DHCP service is disabled, you must have another DHCP server on that network, or

else the computer must be manually configured.

Click the DHCP Table (Details...) hyperlink in the Status 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 Router’s DHCP server.

NBG6503 User’s Guide

The following table describes the labels in this screen.

4.6 Packet Statistics

Click the Packet Statistics (Details...) hyperlink in the Status screen. Read-only information

here includes port status, packet specific statistics and the "system up time". The Poll Interval(s)

field is configurable and is used for refreshing the screen.

Figure 24 Summary: Packet Statistics

The following table describes the labels in this screen.

Table 14 Summary: DHCP Table

# This is the index number of the host computer.

MAC Address This field shows the MAC address of the computer with the name in the Host Name field.

Every Ethernet device has a unique MAC (Media Access Control) address which uniquely

identifies a device. The MAC address is assigned at the factory and consists of six pairs of

hexadecimal characters, for example, 00:A0:C5:00:00:02.

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

Expires in This field displays the time when the IP address and MAC address association ends.

Refresh Click Refresh to renew the screen.

Table 15 Summary: Packet Statistics

LABEL DESCRIPTION Port This is the Router’s port type.

Status For the LAN ports, this displays the port speed and duplex setting or Down when the line is

For the WAN port, it displays the port speed and duplex setting if you’re using Ethernet

encapsulation and Idle (line (ppp) idle), Dial (starting to trigger a call) and Drop (dropping

a call) if you're using PPPoE or PPTP encapsulation. This field displays Down when the line is

For WLAN 2.4G/5G, it displays the maximum transmission rate when the WLAN 2.4G/5G is

enabled and Down when the WLAN 2.4G/5G is disabled.

TxPkts This is the number of transmitted packets on this port.

RxPkts This is the number of received packets on this port.Chapter 4 Monitor

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4.7 WLAN 2.4G Station Status

Click the WLAN 2.4G Station Status (Details...) hyperlink in the Status screen. View the

wireless stations that are currently associated to the Router in the Association List. Association

means that a wireless client (for example, your network or computer with a wireless network card)

has connected successfully to the AP (or wireless router) using the same SSID, channel and

Figure 25 Summary: Wireless Association List

The following table describes the labels in this screen.

4.8 WLAN 5G Station Status

Click the WLAN 5G Station Status (Details...) hyperlink in the Status screen. View the wireless

stations that are currently associated to the Router in the Association List. Association means

that a wireless client (for example, your network or computer with a wireless network card) has

Collisions This is the number of collisions 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 time the Router has been for each session.

This is the total time the Router has been on.

Poll Interval(s) Enter the time interval in seconds for refreshing statistics in this field.

Set Interval Click this button to apply the new poll interval you entered in the Poll Interval(s) field.

Stop Click Stop to stop refreshing statistics.

Table 15 Summary: Packet Statistics (continued)

LABEL DESCRIPTION Table 16 Summary: Wireless Association List

# This is the index number of an associated wireless station.

MAC Address This field displays the MAC address of an associated wireless station.

This field displays the time a wireless station first associated with the Router’s WLAN

connected successfully to the AP (or wireless router) using the same SSID, channel and security

Figure 26 Summary: Wireless Association List

The following table describes the labels in this screen.

Table 17 Summary: Wireless Association List

# This is the index number of an associated wireless station.

MAC Address This field displays the MAC address of an associated wireless station.

This field displays the time a wireless station first associated with the Router’s WLAN

Refresh Click Refresh to reload the list.NBG6503 User’s Guide 43 CHAPTER 5

5.1 Overview This chapter introduces the different modes available on your Router. First, the term “mode” refers to two things in this User’s Guide. • Web Configurator mode. This refers to the Web Configurator interface you want to use for editing Router features. • Device mode. This is the operating mode of your Router, or simply how the Router is being used in the network. 5.1.1 Web Configurator Modes This refers to the configuration interface of the Web Configurator, which has two modes: • Easy. The Web Configurator shows this mode by default. Refer to Chapter 6 on page 45 for more information on the screens in this mode. This interface may be sufficient for users who just want to use the device. • Expert. Advanced users can change to this mode to customize all the functions of the Router.

Click Expert Mode after logging into the Web Configurator. The User’s Guide Chapter 3 on page

31 through Chapter 22 on page 155 discusses the screens in this mode.

5.1.2 Device Modes This refers to the operating mode of the Router, which can act as a: • Router. This is the default device mode of the Router. Use this mode to connect the local

network to another network, like the Internet. Go to Section 7.3 on page 58 to view the Status screen in this mode. • Access Point. Use this mode if you want to extend your network by allowing network devices to

connect to the Router wirelessly. Go to Section 8.4 on page 68 view the Status screen in this mode. For more information on these modes and to change the mode of your Router, refer to Section 22.10 on page 163. The menu for changing device modes is available in Expert mode only. Note: Choose your Device Mode carefully to avoid having to change it later. When changing to another mode, the IP address of the Router changes. The running applications and services of the network devices connected to the Router can be interrupted.Chapter 5 Router Modes

NBG6503 User’s Guide

The Web Configurator is set to Easy Mode by default. You can configure several key features of the Router in this mode. This mode is useful to users who are not fully familiar with some features that are usually intended for network administrators.When you log in to the Web Configurator, the following screen opens.Figure 27 Easy Mode: Network Map

Click Status to open the following screen screen.

Figure 28 Easy Mode: Status Screen

You can do the following in this mode:

•Use this Navigation Panel (Section 6.4 on page 47) to opt out of the Easy mode.

•Use the Network Map screen (Section 6.5 on page 47) to check if your Router can ping the

gateway and whether it is connected to the Internet.

•Use the Control Panel (Section 6.6 on page 48) to configure and enable Router features,

including wireless security, wireless scheduling and bandwidth management and so on.

•Use the Status Screen screen (Section 6.7 on page 55) to view read-only information about the

Router, including the WAN IP, MAC Address of the Router and the firmware version.

6.3 What You Need to Know

Between the different device modes, the Control Panel (Section 6.6 on page 48) changes depending

on which features are applicable to the mode:

• Router Mode: All Control Panel features are available.

• Access Point Mode: Only Power Saving and Wireless Security are available.

6.4 Navigation Panel

Use this navigation panel to opt out of the Easy mode.

Figure 29 Navigation Panel

The following table describes the labels in this screen.

Note: The Network MAP is viewable by Windows XP (need to install patch), Windows

Vista and Windows 7 users only. For Windows XP (Service Pack 2) users, you can

see the network devices connected to the Router by downloading the LLTD (Link

Layer Topology Discovery) patch from the Microsoft Website.

Note: Don’t worry if the Network Map does not display in your web browser. This feature

may not be supported by your system. You can still configure the Control Panel

(Section 6.6 on page 48) in the Easy Mode and the Router features that you want to

use in the Expert Mode.

When you log into the Network Configurator, the Network Map is shown as follows.

Figure 30 Network Map

Table 18 Navigation Panel

ITEM DESCRIPTION Home Click this to go to the Login page. Expert Mode Click this to change to Expert mode and customize features of the Router. Logout Click this to end the Web Configurator session.Chapter 6 Easy Mode

NBG6503 User’s Guide

The line connecting the Router to the gateway becomes green when the Router is able to ping the

gateway. It becomes red when the ping initiating from the Router does not get a response from the

gateway. The same rule applies to the line connecting the gateway to the Internet.

You can also view the devices (represented by icons indicating the kind of network device)

connected to the Router, including those connecting wirelessly. Right-click on the Router icon to

refresh the network map and go to the Wizard. Right click on the other icons to view information

The features configurable in Easy Mode are shown in the Control Panel.

Figure 31 Control Panel

Switch ON to enable the feature. Otherwise, switch OFF. If the feature is turned on, the green light

flashes. If it is turned off, the red light flashes.

Additionally, click the feature to open a screen where you can edit its settings.

The following table describes the labels in this screen.

Table 19 Control Panel

ITEM DESCRIPTION Game Engine Switch ON to maximize bandwidth for gaming traffic in your network. Otherwise, switch

Refer to Section 6.6.1 on page 49 to see this screen.

Power Saving Click this to schedule the wireless feature of the Router.

Disabling the wireless function helps lower the energy consumption of the Router.

Switch ON to apply wireless scheduling. Otherwise, switch OFF.

Refer to Section 6.6.2 on page 49 to see this screen.

Content Filter Click this to restrict access to certain websites, based on keywords contained in URLs, to

which you do not want users in your network to open.

Switch ON to apply website filtering. Otherwise, switch OFF.

Refer to Section 6.6.3 on page 51 to see this screen.

MGMT Click this to edit bandwidth management for predefined applications.

Switch ON to have the Router management bandwidth for uplink and downlink traffic

according to an application or service. Otherwise, switch OFF.

Refer to Section 6.6.4 on page 51 to see this screen.Chapter 6 Easy Mode

NBG6503 User’s Guide

When this feature is enabled, the Router maximizes the bandwidth for gaming traffic that it

forwards out through an interface.

Figure 32 Game Engine

Note: When this is switched on, the Game Console tab in the Bandwidth MGMT screen

is automatically positioned on top.

Turn this off if your network is not using gaming.

Click OK to close this screen.

Use this screen to set the day of the week and time of the day when your wireless LAN is turned on

and off. Wireless LAN scheduling is disabled by default.

Firewall Switch ON to ensure that your network is protected from Denial of Service (DoS) attacks.

Otherwise, switch OFF.

Refer to Section 6.6.5 on page 52 to see this screen.

Click this to configure the wireless security, such as SSID, security mode and WPS key on

Refer to Section 6.6.6 on page 52 to see this screen.

Table 19 Control Panel (continued)

ITEM DESCRIPTIONChapter 6 Easy Mode

NBG6503 User’s Guide

Disabling the wireless capability lowers the energy consumption of the of the Router.

Figure 33 Power Saving

The following table describes the labels in this screen.

Table 20 Power Saving

LABEL DESCRIPTION Wireless Radio Select the wireless radio to set its power saving settings.

WLAN Status Select On or Off to specify whether the Wireless LAN is turned on or off (depending on

what you selected in the WLAN Status field). This field works in conjunction with the

Day and Except for the following times fields.

Day Select Everyday or the specific days to turn the Wireless LAN on or off.

If you select Everyday you can not select any specific days. This field works in

conjunction with the Except for the following times field.

Select a begin time using the first set of hour and minute (min) drop down boxes and

select an end time using the second set of hour and minute (min) drop down boxes. If

you have chosen On earlier for the WLAN Status the Wireless LAN will turn on between

the two times you enter in these fields. If you have chosen Off earlier for the WLAN Status the Wireless LAN will turn off between the two times you enter in these fields.

In this time format, midnight is 00:00 and progresses up to 24:00. For example, 6:00 PM

Apply Click Apply to save your changes back to the Router.

6.6.3 Content Filter

Use this screen to restrict access to certain websites, based on keywords contained in URLs, to

which you do not want users in your network to open.

Figure 34 Content Filter

The following table describes the labels in this screen.

6.6.4 Bandwidth MGMT Use this screen to set bandwidth allocation to pre-defined services and applications for bandwidth

Table 21 Content Filter

LABEL DESCRIPTION Add Click Add after you have typed a keyword.

Repeat this procedure to add other keywords. Up to 64 keywords are allowed.

Note: The Router does not recognize wildcard characters as keywords.

When you try to access a web page containing a keyword, you will get a message telling you

that the content filter is blocking this request.

Delete Highlight a keyword in the text box and click Delete to remove it. The keyword disappears

from the text box after you click Apply.

Apply Click Apply to save your changes.

Cancel Click Cancel to close this screen without saving any changes.Chapter 6 Easy Mode

NBG6503 User’s Guide

The Router uses bandwidth management for incoming and outgoing traffic. Rank the services and

applications by dragging them accordingly from High to Low and click Apply. Click Cancel to close

Figure 35 Bandwidth MGNT

Enable this feature to protect the network from Denial of Service (DoS) attacks. The Router blocks

repetitive pings from the WAN that can otherwise cause systems to slow down or hang.

Click OK to close this screen.

6.6.6 Wireless Security

Use this screen to configure security for your the Wireless LAN. You can enter the SSID and select

the wireless security mode in the following screen.

Note: You can enable the Wireless function of your Router by first turning on the switch in

Figure 37 Wireless Security

The following table describes the general wireless LAN labels in this screen.

Table 22 Wireless Security

LABEL DESCRIPTION Wireless Radio Select the wireless radio to set its security setting.

(Service Set IDentity) The SSID identifies the Service Set with which a wireless station is

associated. Wireless stations associating to the access point (AP) must have the same SSID.

Enter a descriptive name (up to 32 keyboard characters) for the wireless LAN.

Security mode Select WPA-PSK or WPA2-PSK to add security on this wireless network. The wireless

clients which want to associate to this network must have same wireless security settings as

this device. After you select to use a security, additional options appears in this screen.

Select No Security to allow any client to connect to this network without authentication.

This field appears when you choose wither WPA-PSK or WPA2-PSK as the security mode.

Type a pre-shared key from 8 to 63 case-sensitive keyboard characters.

Verify password Type the password again to confirm.

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to close this screen.

WPS Click this to configure the WPS screen.

You can transfer the wireless settings configured here (Wireless Security screen) to

another wireless device that supports WPS.Chapter 6 Easy Mode

NBG6503 User’s Guide

6.6.7 WPS Use this screen to add a wireless station to the network using WPS. Click WPS in the Wireless

Security to open the following screen.

Figure 38 Wireless Security: WPS The following table describes the labels in this screen.

Table 23 Wireless Security: WPS LABEL DESCRIPTION Wireless

Click this to go back to the Wireless Security screen.

WPS Create a secure wireless network simply by pressing a button.

The Router scans for a WPS-enabled device within the range and performs wireless security

information synchronization.

Note: After you click the WPS button on this screen, you have to press a similar button in the

wireless station utility within 2 minutes. To add the second wireless station, you have

to press these buttons on both device and the wireless station again after the first 2

Register Create a secure wireless network simply by entering a wireless client's PIN (Personal

Identification Number) in the Router’s interface and pushing this button.

Type the same PIN number generated in the wireless station’s utility. Then click Register to

associate to each other and perform the wireless security information synchronization.

Exit Click Exit to close this screen.Chapter 6 Easy Mode

NBG6503 User’s Guide

6.7 Status Screen in Easy Mode

In the Network Map screen, click Status to view read-only information about the Router.

Figure 39 Status Screen in Easy Mode

The following table describes the labels in this screen.

Table 24 Status Screen in Easy Mode

ITEM DESCRIPTION Name This is the name of the Router in the network. You can change this in the Maintenance >

General screen in Section 22.3 on page 155.

Time This is the current system date and time.

The date is in YYYY:MM:DD (Year-Month-Day) format. The time is in HH:MM:SS

(Hour:Minutes:Seconds) format.

WAN IP This is the IP address of the WAN port.

MAC Address This is the MAC address of the Router.

This shows the firmware version of the Router.

The firmware version format shows the trunk version, model code and release number.

Wireless 2.4G Network Name

This shows the SSID of the wireless 2.4G network. You can configure this in the Wireless

Security screen (Section 6.6.6 on page 52; Section 10.3.1.1 on page 84).

Security This shows the wireless security used by the Router for the 2.4G wireless radio.

Wireless 5G Network Name

This shows the SSID of the wireless 5G network. You can configure this in the Wireless

Security screen (Section 6.6.6 on page 52; Section 10.3.1.1 on page 84).

Security This shows the wireless security used by the Router for the 5G wireless radio.Chapter 6 Easy Mode

56NBG6503 User’s Guide 57 CHAPTER 7

7.1 Overview The Router is set to router mode by default. Routers are used to connect the local network to another network (for example, the Internet). In the figure below, the Router connects the local

network (LAN1 ~ LAN4) to the Internet. Figure 40 Router NetworkNote: The Status screen is shown after changing to the Expert mode of the Web Configurator. It varies depending on the device mode of your Router. 7.2 What You Can Do

Use the Status screen (Section 7.3 on page 58) to view read-only information about your Router.

ModemRouterChapter 7 Router Mode

Click to open the status screen.

Figure 41 Status Screen: Router Mode

The following table describes the icons shown in the Status screen.

Table 25 Status Screen Icon Key: Router Mode

ICON DESCRIPTION Click this icon to view copyright and a link for related product information.

Click this icon to go to Easy Mode. See Chapter 6 on page 45.

Click this to go to the Home page. See Chapter 4 on page 37.

Select a number of seconds or None from the drop-down list box to refresh all screen statistics

automatically at the end of every time interval or to not refresh the screen statistics.

Click this button to refresh the status screen statistics.

Click this icon to see the Status page. The information in this screen depends on the device

The following table describes the labels shown in the Status screen.

LABEL DESCRIPTION Logout Click this at any time to exit the Web Configurator.

Host Name This is the System Name you enter in the Maintenance > General screen. It is for

identification purposes.

Firmware Version This is the firmware version and the date created.

Sys OP Mode This is the device mode (Section 5.1.2 on page 43) to which the Router is set - Router

- MAC Address This shows the WAN Ethernet adapter MAC Address of your device.

- IP Address This shows the WAN port’s IP address.

- IP Subnet Mask This shows the WAN port’s subnet mask.

- Default Gateway This shows the WAN port’s gateway IP address.

- DHCP This shows the LAN port’s DHCP role - Client or Server.

- MAC Address This shows the LAN Ethernet adapter MAC Address of your device.

- IP Address This shows the LAN port’s IP address.

- IP Subnet Mask This shows the LAN port’s subnet mask.

- DHCP This shows the LAN port’s DHCP role - Server or None.

- WLAN OP Mode This is the device mode (Section 5.1.2 on page 43) to which the Router’s wireless LAN is set

- Access Point Mode.

- MAC Address This shows the wireless adapter MAC Address of your device.

- SSID This shows a descriptive name used to identify the Router in the wireless LAN.

- Channel This shows the channel number which the Router is currently using over the wireless LAN..

- Security This shows the level of wireless security the Router is using.

- MAC Address This shows the wireless adapter MAC Address of your device.

- SSID This shows a descriptive name used to identify the Router in the wireless LAN.

- Channel This shows the channel number which the Router is currently using over the wireless LAN..

- Security This shows the level of wireless security the Router is using.

Item This column shows the type of data the Router is recording.

Data This column shows the actual data recorded by the Router.

System Up Time This is the total time the Router has been on.Chapter 7 Router Mode

NBG6503 User’s Guide

Current Date/Time This field displays your Router’s present date and time.

- CPU Usage This displays what percentage of the Router’s processing ability is currently used. When this

percentage is close to 100%, the Router 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 (for example, using bandwidth management.)

- Memory Usage This shows what percentage of the heap memory the Router is using.

- Firewall This shows whether the firewall is enabled or not.

This shows whether the bandwidth management is enabled or not.

- UPnP This shows whether UPnP is enabled or not.

- Configuration Mode This shows the web configurator mode you are viewing - Expert.

Interface This displays the Router port types. The port types are: WAN, LAN and WLAN.

Status For the LAN and WAN ports, this field displays Down (line is down) or Up (line is up or

For the WLAN, it displays Up when the WLAN is enabled or Down when the WLAN is

Rate For the LAN ports, this displays the port speed and duplex setting or N/A when the line is

For the WAN port, it displays the port speed and duplex setting if you’re using Ethernet

encapsulation and Idle (line (ppp) idle), Dial (starting to trigger a call) and Drop (dropping

a call) if you're using PPPoE or PPTP encapsulation. This field displays N/A when the line is

For the WLAN, it displays the maximum transmission rate when the WLAN is enabled and N/

A when the WLAN is disabled.

BW MGMT Monitor Click Details... to go to the Monitor > BW MGMT Monitor screen (Section 4.4 on page

39). Use this screen to view the amount of network bandwidth that applications running in

the network are using.

DHCP Table Click Details... to go to the Monitor > DHCP Table screen (Section 4.5 on page 39). Use

this screen to view current DHCP client information.

Packet Statistics Click Details... to go to the Monitor > Packet Statistics screen (Section 4.6 on page 40).

Use this screen to view port status and packet specific statistics.

WLAN Station Status Click Details... to go to the Monitor > WLAN 2.4G / 5G Station Status screen (Section

4.8 on page 41). Use this screen to view the wireless stations that are currently associated

Table 26 Status Screen: Router Mode (continued)

Use the sub-menus on the navigation panel to configure Router features.

The following table describes the sub-menus.

Table 27 Navigation Panel: Router Mode

LINK TAB FUNCTION Status This screen shows the Router’s general device, system and interface status

information. Use this screen to access the wizard, and summary statistics

MONITOR Log Use this screen to view the list of activities recorded by your Router.

BW MGMT Use this screen to view the amount of network bandwidth that applications

running in the network are using.

DHCP Table Use this screen to view current DHCP client information.

Packet Statistics Use this screen to view port status and packet specific statistics.

WLAN 2.4G Station Status

Use this screen to view the wireless stations that are currently associated

to the Router through the wireless 2.4G network.

WLAN 5G Station Status

Use this screen to view the wireless stations that are currently associated

to the Router through the wireless 5G network.

CONFIGURATION NetworkChapter 7 Router Mode

2.4G General Use this screen to configure wireless 2.4G LAN.

MAC Filter Use the MAC filter screen to configure the Router to block access to devices

or block the devices from accessing the Router.

Advanced This screen allows you to configure advanced wireless settings.

QoS Use this screen to configure Wi-Fi Multimedia Quality of Service (WMM QoS). WMM QoS allows you to prioritize wireless traffic according to the

delivery requirements of individual services.

WPS Use this screen to configure WPS.

WPS Station Use this screen to add a wireless station using WPS.

Scheduling Use this screen to schedule the times the Wireless LAN is enabled.

WDS Use this screen to set up Wireless Distribution System (WDS) on your

5G General Use this screen to configure wireless 5G LAN.

MAC Filter Use the MAC filter screen to configure the Router to block access to devices

or block the devices from accessing the Router.

Advanced This screen allows you to configure advanced wireless settings.

QoS Use this screen to configure Wi-Fi Multimedia Quality of Service (WMM QoS). WMM QoS allows you to prioritize wireless traffic according to the

delivery requirements of individual services.

WPS Use this screen to configure WPS.

WPS Station Use this screen to add a wireless station using WPS.

Scheduling Use this screen to schedule the times the Wireless LAN is enabled.

This screen allows you to configure ISP parameters, WAN IP address

assignment, DNS servers and the WAN MAC address.

Advanced Use this screen to configure other advanced properties.

LAN IP Use this screen to configure LAN IP address and subnet mask.

IP Alias Use this screen to have the Router apply IP alias to create LAN subnets.

DHCP Server General Use this screen to enable the Router’s DHCP server.

Advanced Use this screen to assign IP addresses to specific individual computers

based on their MAC addresses and to have DNS servers assigned by the

NAT General Use this screen to enable NAT.

Application Use this screen to configure servers behind the Router.

Advanced Use this screen to change your Router’s port triggering settings.

DDNS General Use this screen to set up dynamic DNS.

Static Route IP Static

Use this screen to configure IP static routes.

Firewall General Use this screen to activate/deactivate the firewall.

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

add a firewall rule.

Content Filter Use this screen to block certain web features and sites containing certain

keywords in the URL.

Table 27 Navigation Panel: Router Mode (continued)

General Use this screen to enable bandwidth management.

Advanced Use this screen to set the upstream bandwidth and edit a bandwidth

Monitor Use this screen to view the amount of network bandwidth that applications

running in the network are using.

WWW Use this screen to be able to access the Router from the LAN, WAN or both.

UPnP General Use this screen to enable UPnP on the Router.

MAINTENANCE General Use this screen to view and change administrative settings such as system

Use this screen to change the password of your Router.

Time Time Setting Use this screen to change your Router’s time and date.

Use this screen to upload firmware to your Router.

Use this screen to backup and restore the configuration or reset the factory

defaults to your Router.

Restart This screen allows you to reboot the Router without turning the power off.

Sys OP Mode This screen allows you to select whether your device acts as a Router or a

Table 27 Navigation Panel: Router Mode (continued)

Use your Router as an access point (AP) if you already have a router or gateway on your network. In this mode your Router bridges a wired network (LAN) and wireless LAN (WLAN) in the same subnet. See the figure below for an example.Figure 43 Wireless Internet Access in Access Point Mode Many screens that are available in Router mode are not available in Access Point mode, such as bandwidth management and firewall. Note: See Chapter 9 on page 73 for an example of setting up a wireless network in Access Point mode. 8.2 What You Can Do

•Use the Status screen (Section 8.4 on page 68) to view read-only information about your Router. •Use the LAN screen (Section 8.5 on page 70) to set the IP address for your Router acting as an access point. 8.3 What You Need to Know

See Chapter 9 on page 73 for a tutorial on setting up a network with the Router as an access point.

RouterChapter 8 Access Point Mode

NBG6503 User’s Guide

8.3.1 Setting your Router to AP Mode

1 Log into the Web Configurator if you haven’t already. See the Quick start Guide for instructions on

2 To use your Router as an access point, go to Maintenance > Sys OP Mode and select Access

Figure 44 Changing to Access Point mode

Note: You have to log in to the Web Configurator again when you change modes. As soon

as you do, your Router is already in Access Point mode.

3 When you select Access Point Mode, the following pop-up message window appears.

Figure 45 Pop up for Access Point mode

4 Click Apply. The Web Configurator refreshes once the change to Access Point mode is successful.

8.3.2 Accessing the Web Configurator in Access Point Mode

Log in to the Web Configurator in Access Point mode, do the following:

1 Connect your computer to the LAN port of the Router.

2 The default IP address of the Router is “192.168.1.2”. In this case, your computer must have an IP

address in the range between “192.168.1.3” and “192.168.1.254”.Chapter 8 Access Point Mode

NBG6503 User’s Guide

3 Click Start > Run on your computer in Windows. Type “cmd” in the dialog box. Enter “ipconfig” to

show your computer’s IP address. If your computer’s IP address is not in the correct range then see

Appendix B on page 181 for information on changing your computer’s IP address.

4 After you’ve set your computer’s IP address, open a web browser such as Internet Explorer and

type “192.168.1.2” as the web address in your web browser.

Note: After clicking Login, the Easy mode appears. Refer to page 45 for the Easy mode

screens. Change to Expert mode to see the screens described in the sections

8.3.3 Configuring your WLAN, Bandwidth Management and Maintenance

The configuration of wireless, bandwidth management and maintenance settings in Access Point

mode is the same as for Router Mode.

•See Chapter 10 on page 83 for information on the configuring your wireless network.

•See Chapter 19 on page 137 for information on configuring your Bandwidth Management screen.

•See Chapter 22 on page 155 to Chapter 22 on page 155 for information on configuring your

Maintenance settings.Chapter 8 Access Point Mode

Click to open the Status screen.

Figure 46 Status Screen: Access Point Mode

The following table describes the labels shown in the Status screen.

Table 28 Status Screen: Access Point Mode

LABEL DESCRIPTION Logout Click this at any time to exit the Web Configurator.

Host Name This is the System Name you enter in the Maintenance > General screen. It is for

identification purposes.

Firmware Version This is the firmware version and the date created.

Sys OP Mode This is the device mode (Section 5.1.2 on page 43) to which the Router is set - Access

- MAC Address This shows the LAN Ethernet adapter MAC Address of your device.

- IP Address This shows the LAN port’s IP address.

- IP Subnet Mask This shows the LAN port’s subnet mask.

- Default Gateway This shows the LAN Ethernet default gateway of your device.

- WLAN OP Mode This is the device mode (Section 5.1.2 on page 43) to which the Router’s wireless LAN is set

- Access Point Mode.

- MAC Address This shows the wireless adapter MAC Address of your device.

- SSID This shows a descriptive name used to identify the Router in the wireless 2.4G LAN.

- Channel This shows the channel number which you select manually.

- Security This shows the level of wireless security the Router is using.

- MAC Address This shows the wireless adapter MAC Address of your device.

- SSID This shows a descriptive name used to identify the Router in the wireless 5G LAN.

- Channel This shows the channel number which you select manually.

- Security This shows the level of wireless security the Router is using.

Item This column shows the type of data the Router is recording.

Data This column shows the actual data recorded by the Router.

System Up Time This is the total time the Router has been on.

Current Date/Time This field displays your Router’s present date and time.

- CPU Usage This displays what percentage of the Router’s processing ability is currently used. When this

percentage is close to 100%, the Router 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 (for example, using bandwidth management.

- Memory Usage This shows what percentage of the heap memory the Router is using.

- Configuration Mode This shows the web configurator mode you are viewing - Expert.

Interface This displays the Router port types. The port types are: LAN, WLAN 2.4G, and WLAN 5G.

Status For the LAN and WAN ports, this field displays Down (line is down) or Up (line is up or

For the WLAN, it displays Up when the WLAN is enabled or Down when the WLAN is

Rate For the LAN ports, this displays the port speed and duplex setting or N/A when the line is

For the WAN port, it displays the port speed and duplex setting if you’re using Ethernet

encapsulation and Idle (line (ppp) idle), Dial (starting to trigger a call) and Drop (dropping

a call) if you're using PPPoE or PPTP encapsulation. This field displays N/A when the line is

For the WLAN, it displays the maximum transmission rate when the WLAN is enabled and N/

A when the WLAN is disabled.

Packet Statistics Click Details... to go to the Monitor > Packet Statistics screen (Section 4.6 on page 40).

Use this screen to view port status and packet specific statistics.

WLAN Station Status Click Details... to go to the Monitor > WLAN 2.4G / 5G Station Status screen (Section

4.8 on page 41). Use this screen to view the wireless stations that are currently associated

Table 28 Status Screen: Access Point Mode (continued)

NBG6503 User’s Guide

8.4.0.1 Navigation Panel

Use the menu in the navigation panel to configure Router features in Access Point mode.

The following screen and table show the features you can configure in Access Point mode.

Figure 47 Menu: Access Point Mode

Refer to Table 27 on page 61 for descriptions of the labels shown in the Navigation panel.

Use this section to configure your LAN settings while in Access Point mode.

Click Network > LAN to see the screen below.

Note: If you change the IP address of the Router in the screen below, you will need to log

into the Router again using the new IP address.

Figure 48 Network > LAN > IP The table below describes the labels in the screen.Chapter 8 Access Point Mode

Table 29 Network > LAN > IP LABEL DESCRIPTION Get from DHCP Server

Click this to deploy the Router as an access point in the network.

When you enable this, the Router gets its IP address from the network’s DHCP server (for

example, your ISP). Users connected to the Router can now access the network (i.e., the

Internet if the IP address is given by the ISP).

The Web Configurator may no longer be accessible unless you know the IP address assigned

by the DHCP server to the Router. You need to reset the Router to be able to access the Web

Configurator again (see Section 22.7 on page 160 for details on how to reset the Router).

Also when you select this, you cannot enter an IP address for your Router in the field below.

Click this if you want to specify the IP address of your Router. Or if your ISP or network

administrator gave you a static IP address to access the network or the Internet.

IP Address Type the IP address in dotted decimal notation. The default setting is 192.168.1.2. If you

change the IP address you will have to log in again with the new IP address.

IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your Router 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 Router.

Enter a Gateway IP Address (if your ISP or network administrator gave you one) in this

Select From ISP if your ISP dynamically assigns DNS server information (and the Router's

WAN IP address). The field to the right displays the (read-only) DNS server IP address that

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 None if you do not want to configure DNS servers. 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 to the Router.

Reset Click Reset to reload the previous configuration for this screen.Chapter 8 Access Point Mode

NBG6503 User’s Guide

72NBG6503 User’s Guide 73 CHAPTER 9

9.1 Overview This chapter provides tutorials for your Router as follows:• Connecting to the Internet from an Access Point• Configuring Wireless Security Using WPS• Enabling and Configuring Wireless Security (No WPS) • If your connection is successful, open your Internet browser and enter http://www.zyxel.com or the URL of any other web site in the address bar. If you are able to access the web site, your wireless connection is successfully configured. 9.2 Connecting to the Internet from an Access Point

This section gives you an example of how to set up an access point (AP) and wireless client (a

notebook (B), in this example) for wireless communication. B can access the Internet through the access point wirelessly.Figure 49 Wireless Access Point Connection to the Internet 9.3 Configuring Wireless Security Using WPS This section gives you an example of how to set up wireless network using WPS. This example uses the Router as the AP and NWD210N as the wireless client which connects to a notebook. Note: The wireless client must be a WPS-aware device (for example, a WPS USB adapter or PCI card).There are two WPS methods for creating a secure connection. This tutorial shows you how to do both.Chapter 9 Tutorials

NBG6503 User’s Guide

• Push Button Configuration (PBC) - create a secure wireless network simply by pressing a

button. See Section 9.3.1 on page 74.This is the easier method.

• PIN Configuration - create a secure wireless network simply by entering a wireless client's PIN

(Personal Identification Number) in the Router’s interface. See Section 9.3.2 on page 75. This is

the more secure method, since one device can authenticate the other.

9.3.1 Push Button Configuration (PBC)

1 Make sure that your Router is turned on and that it is within range of your computer.

2 Make sure that you have installed the wireless client (this example uses the NWD210N) driver and

utility in your notebook.

3 In the wireless client utility, find the WPS settings. Enable WPS and press the WPS button (Start or

4 Log into Router’s Web Configurator and press the Push Button button in the Network > Wireless

LAN 2.4G or Wireless LAN 5G > WPS Station screen.

Note: Your Router has a WPS button located on its panel, as well as a WPS button in its

configuration utility. Both buttons have exactly the same function; you can use one

Note: It doesn’t matter which button is pressed first. You must press the second button

within two minutes of pressing the first one.

The Router sends the proper configuration settings to the wireless client. This may take up to two

minutes. Then the wireless client is able to communicate with the Router securely.Chapter 9 Tutorials

NBG6503 User’s Guide

The following figure shows you an example to set up wireless network and security by pressing a

button on both Router and wireless client (the NWD210N in this example).

Figure 50 Example WPS Process: PBC Method

9.3.2 PIN Configuration

When you use the PIN configuration method, you need to use both Router’s configuration interface

and the client’s utilities.

1 Launch your wireless client’s configuration utility. Go to the WPS settings and select the PIN method

to get a PIN number.

2 Enter the PIN number to the PIN field in the Network > Wireless LAN 2.4G or Wireless LAN

5G > WPS Station screen on the Router.

3 Click Start button (or button next to the PIN field) on both the wireless client utility screen and the

Router’s WPS Station screen within two minutes.

The Router authenticates the wireless client and sends the proper configuration settings to the

wireless client. This may take up to two minutes. Then the wireless client is able to communicate

with the Router securely.

The following figure shows you the example to set up wireless network and security on Router and

wireless client (ex. NWD210N in this example) by using PIN method.

Figure 51 Example WPS Process: PIN Method

Authentication by PIN SECURITY INFO WITHIN 2 MINUTES Wireless Client

9.4 Enabling and Configuring Wireless Security (No WPS)

This example shows you how to configure wireless security settings with the following parameters

Follow the steps below to configure the wireless settings on your Router.

The instructions require that your hardware is connected (see the Quick Start Guide) and you are

logged into the Web Configurator through your LAN connection (see Section 3.2 on page 31).

1 Open the Wireless LAN > General screen in the AP’s Web Configurator.

2 Enable Wireless LAN.

3 Enter SSID_Example3 as the SSID and select a channel.

4 Set security mode to WPA-PSK and enter ThisismyWPA-PSKpre-sharedkey in the Pre-Shared

Key field. Click Apply.

Figure 52 Tutorial: Network > Wireless LAN > General

5 Open the Status screen. Verify your wireless and wireless security settings under Device

Information and check if the WLAN connection is up under Interface Status.

Figure 53 Tutorial: Checking Wireless Settings

9.4.1 Configure Your Notebook

Note: We use the ZyXEL M-302 wireless adapter utility screens as an example for the

wireless client. The screens may vary for different models.

1 The Router supports IEEE 802.11b, IEEE 802.11g, IEEE 802.11n and IEEE 802.11ac wireless

clients. Make sure that your notebook or computer’s wireless adapter supports one of these

2 Wireless adapters come with software sometimes called a “utility” that you install on your

computer. See your wireless adapter’s User’s Guide for information on how to do that.

3 After you’ve installed the utility, open it. If you cannot see your utility’s icon on your screen, go to

Start > Programs and click on your utility in the list of programs that appears. The utility displays

a list of APs within range, as shown in the example screen below.

4 Select SSID_Example3 and click Connect.

Figure 54 Connecting a Wireless Client to a Wireless Network tChapter 9 Tutorials

NBG6503 User’s Guide

5 Select WPA-PSK and type the security key in the following screen. Click Next.

Figure 55 Security Settings

6 The Confirm Save window appears. Check your settings and click Save to continue.

Figure 56 Confirm Save

7 Check the status of your wireless connection in the screen below. If your wireless connection is

weak or you have no connection, see the Troubleshooting section of this User’s Guide.

Figure 57 Link Status

If your connection is successful, open your Internet browser and enter http://www.zyxel.com or the

URL of any other web site in the address bar. If you are able to access the web site, your wireless

connection is successfully configured.Chapter 9 Tutorials

NBG6503 User’s Guide

10.1 Overview This chapter discusses how to configure the wireless network settings in your Router. See the appendices for more detailed information about wireless networks.The following figure provides an example of a wireless network.Figure 58 Example of a Wireless Network The wireless 2.4G network is the part in the blue circle and wireless 5G network is the part in the green circle. In these wireless networks, devices A, B and C 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. 10.2 What You Can Do

•Use the General screen (Section 10.4 on page 86) to enable the Wireless LAN, enter the SSID and select the wireless security mode. •Use the MAC Filter screen (Section 10.5 on page 90) to allow or deny wireless stations based on their MAC addresses from connecting to the Router.

A B Router2.4G 5G CChapter 10 Wireless LAN NBG6503 User’s Guide

•Use the Advanced screen (Section 10.6 on page 91) to allow wireless advanced features, such

as intra-BSS networking and set the RTS/CTS Threshold.

•Use the QoS screen (Section 10.7 on page 93) to set priority levels to services, such as e-mail,

VoIP, chat, and so on.

•Use the WPS screen (Section 10.8 on page 94) to quickly set up a wireless network with strong

security, without having to configure security settings manually.

•Use the WPS Station screen (Section 10.9 on page 95) to add a wireless station using WPS.

•Use the Scheduling screen (Section 10.10 on page 96) to set the times your wireless LAN is

•Use the WDS screen (Section 10.11 on page 97) to configure Wireless Distribution System on

10.3 What You Should Know

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.

• If two 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.

10.3.1 Wireless Security Overview

The following sections introduce different types of wireless security you can set up in the wireless

10.3.1.1 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

10.3.1.2 MAC Address Filter

Every wireless client has a unique identification number, called a MAC address.

usually written using twelve hexadecimal characters

; for example, 00A0C5000002 or

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, A, B, C, D, E, and F.Chapter 10 Wireless LAN NBG6503 User’s Guide

00:A0:C5:00:00:02. To get the MAC address for each wireless client, see the appropriate User’s

Guide or other documentation.

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.

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.

Usually, you should set up the strongest encryption that every wireless client in the wireless

network supports. Suppose the wireless network has two wireless clients. Device A only supports

WEP, and device B supports WEP and WPA-PSK. Therefore, you should set up WEP in the wireless

Note: It is recommended that wireless networks use WPA-PSK or stronger encryption.

IEEE 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.

When you select WPA2-PSK in your Router, you can also select an option (WPA Compatible) to

support WPA as well. In this case, if some wireless clients support WPA and some support WPA2,

you should set up WPA2-PSK (depending on the type of wireless network login) and select the

WPA Compatible option in the Router.

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

10.3.1.4 WPS WiFi Protected Setup (WPS) is an industry standard specification, defined by the WiFi Alliance. WPS

allows you to quickly set up a wireless network with strong security, without having to configure

security settings manually. Depending on the devices in your network, you can either press a

button (on the device itself, or in its configuration utility) or enter a PIN (Personal Identification

Number) in the devices. Then, they connect and set up a secure network by themselves. See how

to set up a secure wireless network using WPS in the Section 9.3 on page 73.

Table 30 Types of Encryption for Each Type of Authentication

NO AUTHENTICATION Weakest No Security

WEP WPA-PSK Strongest WPA2-PSKChapter 10 Wireless LAN NBG6503 User’s Guide

10.3.1.5 WDS Wireless Distribution System or WDS security is used between bridged APs. It is independent of the

security between the wired networks and their respective APs. If you do not enable WDS security,

traffic between APs is not encrypted. When WDS security is enabled, both APs must use the same

10.4 General Wireless LAN 2.4G/5G Screen

Use this screen to enable the Wireless LAN 2.4G or 5G, enter the SSID and select the wireless

Note: If you are configuring the Router from a computer connected to the wireless LAN

and you change the Router’s SSID, channel 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 Router’s new settings.

Click Network > Wireless LAN 2.4G or Wireless LAN 5G to open the General screen.

Figure 59 Network > Wireless LAN 2.4G/5G > General

The following table describes the general wireless LAN labels in this screen.

Table 31 Network > Wireless LAN 2.4G/5G > General

LABEL DESCRIPTION Wireless Setup Wireless LAN Select the radio button to Enable or Disable Wireless LAN.

You can turn the wireless LAN on or off using the switch at the rear panel of the Router. Network Name(SSID)(Service Set IDentity) The SSID identifies the Service Set with which a wireless station is associated. Wireless stations associating to the Router must have the same SSID. Enter a

descriptive name (up to 32 keyboard characters) for the wireless LAN.

Hide SSID Select this check box to hide the SSID in the outgoing beacon frame so a station cannot

obtain the SSID through scanning using a site survey tool.Chapter 10 Wireless LAN NBG6503 User’s Guide

See the rest of this chapter for information on the other labels in this screen.

Select No Security to allow wireless stations to communicate with the access points without any

Note: If you do not enable any wireless security on your Router, your network is

accessible to any wireless networking device that is within range.

Figure 60 Network > Wireless LAN 2.4G/5G > General: No Security

Set the operating frequency/channel depending on your particular region.

Select a channel from the drop-down list box. The options vary depending on the frequency

band and the country you are in.

Refer to the Connection Wizard chapter for more information on channels. This option is

only available if Auto Channel Selection is disabled.

This displays the channel the Router is currently using.

Security Mode Select WEP, WPA, WPA2, WPA-PSK or WPA2-PSK to add security on this wireless

network. The wireless clients which want to associate to this network must have same

wireless security settings as the Router. After you select to use a security, additional options

appears in this screen. See 10.4.2, and 10.4.3 sections.

Or you can select No Security to allow any client to associate this network without

Note: If you enable the WPS function, only No Security, Static WEP, WPA-PSK and WPA2-

PSK are available in this field.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to reload the previous configuration for this screen.

Table 31 Network > Wireless LAN 2.4G/5G > General (continued)

LABEL DESCRIPTIONChapter 10 Wireless LAN NBG6503 User’s Guide

The following table describes the labels in this screen.

Refer to Table 31 on page 86 for descriptions of the other labels in this screen.

10.4.2 WEP Encryption

WEP encryption scrambles the data transmitted between the wireless stations and the access points

to keep network communications private. It encrypts unicast and multicast communications in a

network. Both the wireless stations and the access points must use the same WEP key.

Your Router allows you to configure up to four 64-bit or 128-bit WEP keys but only one key can be

enabled at any one time.

In order to configure and enable WEP encryption, click Network > Wireless LAN 2.4G or

Wireless LAN 5G to display the General screen. Select Static WEP from the Security Mode list.

Figure 61 Network > Wireless LAN 2.4G/5G > General: Static WEP Table 32 Network > Wireless LAN 2.4G/5G > General: No Security

LABEL DESCRIPTION Security Mode Choose No Security from the drop-down list box.

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.Chapter 10 Wireless LAN NBG6503 User’s Guide

The following table describes the wireless LAN security labels in this screen.

Refer to Table 31 on page 86 for descriptions of the other labels in this screen.

Table 33 Network > Wireless LAN 2.4G/5G > General: Static WEP LABEL DESCRIPTION Security Mode Select Static WEP to enable data encryption.

PassPhrase Enter a Passphrase (up to 26 printable characters) and click Generate.

A passphrase functions like a password. In WEP security mode, it is further converted by the

Router into a complicated string that is referred to as the “key”. This key is requested from

all devices wishing to connect to a wireless network.

WEP Encryption Select 64-bit WEP or 128-bit WEP.

This dictates the length of the security key that the network is going to use.

Select Auto or Shared Key from the drop-down list box.

This field specifies whether the wireless clients have to provide the WEP key to login to the

wireless client. Keep this setting at Auto unless you want to force a key verification before

communication between the wireless client and the Router occurs.

Select Shared Key to force the clients to provide the WEP key prior to communication.

ASCII Select this option in order to enter ASCII characters as WEP key.

Hex Select this option in order to enter hexadecimal characters as a WEP key.

The preceding "0x", that identifies a hexadecimal key, is entered automatically.

Key 1 to Key 4 The WEP keys are used to encrypt data. Both the Router and the wireless stations must use

the same WEP key for data transmission.

If you chose 64-bit WEP, then enter any 5 ASCII characters or 10 hexadecimal characters

You must configure at least one key, only one key can be activated at any one time.

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.Chapter 10 Wireless LAN NBG6503 User’s Guide

10.4.3 WPA-PSK/WPA2-PSK Click Network > Wireless LAN 2.4G or Wireless LAN 5G to display the General screen. Select

WPA-PSK or WPA2-PSK from the Security Mode list.

Figure 62 Network > Wireless LAN 2.4G/5G> General: WPA-PSK/WPA2-PSK The following table describes the labels in this screen.

Refer to Table 31 on page 86 for descriptions of the other labels in this screen.

The MAC filter screen allows you to configure the Router to give exclusive access to devices (Allow)

or exclude devices from accessing the Router (Deny). Every Ethernet device has a unique MAC

(Media Access Control) address. The MAC address is assigned at the factory and consists of six

Table 34 Network > Wireless LAN 2.4G/5G > General: WPA-PSK/WPA2-PSK LABEL DESCRIPTION Security Mode Select WPA-PSK or WPA2-PSK to enable data encryption.

This field appears when you choose WPA-PSK2 as the Security Mode.

Check this field to allow wireless devices using WPA-PSK security mode to connect to your

Pre-Shared Key WPA-PSK/WPA2-PSK uses a simple common password for authentication.

Type a pre-shared key from 8 to 63 case-sensitive keyboard characters.

The Group Key Update Timer is the rate at which the AP sends a new group key out to all

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.Chapter 10 Wireless LAN NBG6503 User’s Guide

pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. You need to know the MAC

address of the devices to configure this screen.

To change your Router’s MAC filter settings, click Network > Wireless LAN 2.4G or Wireless

LAN 5G > MAC Filter. The screen appears as shown.

Figure 63 Network > Wireless LAN 2.4G/5G > MAC Filter

The following table describes the labels in this menu.

Use this screen to allow wireless advanced features, such as intra-BSS networking and set the

Table 35 Network > Wireless LAN 2.4G/5G > MAC Filter

LABEL DESCRIPTION Access Policy

Policy Define the filter action for the list of MAC addresses in the MAC Address table.

Select Allow to permit access to the Router, MAC addresses not listed will be denied

access to the Router.

Select Reject to block access to the Router, MAC addresses not listed will be allowed to

Enter the MAC addresses of the wireless station that are allowed or denied access to the

Router in these address fields. Enter the MAC addresses in a valid MAC address format,

that is, six hexadecimal character pairs, for example, 12:34:56:78:9a:bc. Click Add.

Delete Click the delete icon to remove the MAC address from the list.

MAC Address This is the MAC address of the wireless station that are allowed or denied access to the

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.Chapter 10 Wireless LAN NBG6503 User’s Guide

Click Network > Wireless LAN 2.4G or Wireless LAN 5G > Advanced. The screen appears as

Figure 64 Network > Wireless LAN > Advanced

The following table describes the labels in this screen.

Table 36 Network > Wireless LAN 2.4G/5G > Advanced

LABEL DESCRIPTION RTS/CTS Threshold

Data with its frame size larger than this value will perform the RTS (Request To Send)/CTS

The threshold (number of bytes) for the fragmentation boundary for directed messages. It is

the maximum data fragment size that can be sent. Enter an even number.

A 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.

Output Power Set the output power of the Router in this field. If there is a high density of APs in an area,

decrease the output power of the Router to reduce interference with other APs. Select one of

the following 100%, 90%, 75%, 50%, 25%, 10% or Minimum. See the product

specifications for more information on your Router’s output power.

Select 11b/g mixed mode to allow IEEE802.11b and IEEE802.11g compliant WLAN devices

to associate with the Router.

Select 11b only to allow only IEEE 802.11b compliant WLAN devices to associate with the

Select 11g only to allow only IEEE 802.11g compliant WLAN devices to associate with the

Select 11n only to allow only IEEE 802.11n compliant WLAN devices to associate with the

Select 11b/g/n mixed mode to allow IEEE802.11b, IEEE802.11g and IEEE802.11n

compliant WLAN devices to associate with the Router.Chapter 10 Wireless LAN NBG6503 User’s Guide

10.7 Quality of Service (QoS) Screen

The QoS screen allows you to automatically give a service (such as VoIP and video) a priority level.

Click Network > Wireless LAN 2.4G or Wireless LAN 5G > QoS. The following screen appears.

Figure 65 Network > Wireless LAN > QoS Network Mode

Select 11a/n mixed mode to allow IEEE802.11a and IEEE802.11n compliant WLAN devices

to associate with the Router.

Select 11a only to allow only IEEE 802.11a compliant WLAN devices to associate with the

Select 11a/an/ac to allow only IEEE 802.11a, IEEE802.11an and IEEE802.11ac compliant

WLAN devices to associate with the Router.

HT (High Throughput) Physical Mode - Use the fields below to configure the 802.11 wireless environment of

Choose this according to the wireless mode(s) used in your network.

Mixed Mode - Select this if the wireless clients in your network use different wireless modes

(for example, IEEE 802.11b/g and IEEE 802.1n modes)

Green Mode - Select this if the wireless clients in your network uses only one type of

wireless mode (for example, IEEEE 802.11 n only)

Select the channel bandwidth you want to use for your wireless network.

It is recommended that you select 20/40 (20, 40, 20/40 MHz).

Select 20 MHz if you want to lessen radio interference with other wireless devices in your

Guard Interval Select Auto to increase data throughput. However, this may make data transfer more prone

Select Long to prioritize data integrity. This may be because your wireless network is busy

and congested or the Router is located in an environment prone to radio interference.

This is set to Auto by default.

If you select 20/40 as your Channel Bandwidth, the extension channel enables the Router

to get higher data throughput. This also lowers radio interference and traffic.

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.

Table 36 Network > Wireless LAN 2.4G/5G > Advanced (continued)

LABEL DESCRIPTIONChapter 10 Wireless LAN NBG6503 User’s Guide

The following table describes the labels in this screen.

Use this screen to enable/disable WPS, view or generate a new PIN number and check current WPS

status. To open this screen, click Network > Wireless LAN 2.4G or Wireless LAN 5G > WPS

Figure 66 Network > Wireless LAN 2.4G/5G > WPS The following table describes the labels in this screen.

Table 37 Network > Wireless LAN 2.4G/5G > QoS LABEL DESCRIPTION Enable WMM QoS Check this to have the Router automatically give a service a priority level according to the

ToS value in the IP header of packets it sends. WMM QoS (Wifi MultiMedia Quality of

Service) gives high priority to voice and video, which makes them run more smoothly.

Apply Click Apply to save your changes to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.

Table 38 Network > Wireless LAN 2.4G/5G > WPS LABEL DESCRIPTION WPS Setup

Enable WPS Select this to enable the WPS feature.

PIN Number This displays a PIN number last time system generated. Click Generate to generate a

Status This displays Configured when the Router has connected to a wireless network using

WPS or when Enable WPS is selected and wireless or wireless security settings have

been changed. The current wireless and wireless security settings also appear in the

This displays Unconfigured if WPS is disabled and there are no wireless or wireless

security changes on the Router or you click Release_Configuration to remove the

configured wireless and wireless security settings.Chapter 10 Wireless LAN NBG6503 User’s Guide

10.9 WPS Station Screen

Use this screen when you want to add a wireless station using WPS. To open this screen, click

Network > Wireless LAN 2.4G or Wireless LAN 5G > WPS Station tab.

Note: Note: After you click Push Button on this screen, you have to press a similar

button in the wireless station utility within 2 minutes. To add the second wireless

station, you have to press these buttons on both device and the wireless station

again after the first 2 minutes.

Figure 67 Network > Wireless LAN 2.4G/5G > WPS Station

This button is only available when the WPS status displays Configured.

Click this button to remove all configured wireless and wireless security settings for WPS

connections on the Router.

802.11 Mode This is the 802.11 mode used. Only compliant WLAN devices can associate with the

SSID This is the name of the wireless network.

Security This is the type of wireless security employed by the network.

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.

Table 38 Network > Wireless LAN 2.4G/5G > WPS (continued)

LABEL DESCRIPTIONChapter 10 Wireless LAN NBG6503 User’s Guide

The following table describes the labels in this screen.

10.10 Scheduling Screen

Use this screen to set the times your wireless LAN is turned on and off. Wireless LAN scheduling is

disabled by default. The wireless LAN can be scheduled to turn on or off on certain days and at

certain times. To open this screen, click Network > Wireless LAN 2.4G or Wireless LAN 5G >

Figure 68 Network > Wireless LAN 2.4G/5G > Scheduling

The following table describes the labels in this screen.

Table 39 Network > Wireless LAN > WPS Station

LABEL DESCRIPTION Push Button Use this button when you use the PBC (Push Button Configuration) method to configure

wireless stations’s wireless settings. See Section 9.3.1 on page 74.

Click this to start WPS-aware wireless station scanning and the wireless security information

Use this button when you use the PIN Configuration method to configure wireless station’s

wireless settings. See Section 9.3.2 on page 75.

Type the same PIN number generated in the wireless station’s utility. Then click Start to

associate to each other and perform the wireless security information synchronization.

Table 40 Network > Wireless LAN 2.4G/5G > Scheduling

Select this to enable Wireless LAN scheduling.

A Wireless Distribution System is a wireless connection between two or more APs. Use this screen

to set the operating mode of your Router to AP + Bridge or Bridge Only and establish wireless

links with other APs. You need to know the MAC address of the peer device, which also must be in

Note: You must enable the same wireless security settings on the Router and on all

wireless clients that you want to associate with it.

The WDS feature is only available in wireless 2.4G network.

Click Network > Wireless LAN 2.4G > WDS tab. The following screen opens with the Basic

Setting set to AP+Bridge, and Security Mode set to WEP.

Figure 69 Network > Wireless LAN 2.4G > WDS WLAN Status Select On or Off to specify whether the Wireless LAN is turned on or off. This field works in

conjunction with the Day and Except for the following times fields.

Day Select Everyday or the specific days to turn the Wireless LAN on or off. If you select

Everyday you can not select any specific days. This field works in conjunction with the

Except for the following times field.

Select a begin time using the first set of hour and minute (min) drop down boxes and

select an end time using the second set of hour and minute (min) drop down boxes. If you

have chosen On earlier for the WLAN Status the Wireless LAN will turn on between the two

times you enter in these fields. If you have chosen Off earlier for the WLAN Status the

Wireless LAN will turn off between the two times you enter in these fields.

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to reload the previous configuration for this screen.

Table 40 Network > Wireless LAN 2.4G/5G > Scheduling (continued)

LABEL DESCRIPTIONChapter 10 Wireless LAN NBG6503 User’s Guide

The following table describes the labels in this screen.

Table 41 Network > Wireless LAN 2.4G > WDS LABEL DESCRIPTION WDS Setup

Basic Settings Select the operating mode for your Router.

The Router functions as a bridge and access point simultaneously.

• Bridge - The Router acts as a wireless network bridge and establishes wireless links with

other APs. You need to know the MAC address of the peer device, which also must be in

bridge mode. The Router can establish up to five wireless links with other APs.

This is the MAC address of your Router.

Phy Mode Select the Phy mode you want the Router to use. This dictates the maximum size of packets

during data transmission.

This is the MAC address of the peer device that your Router wants to make a bridge

You can connect to up to 4 peer devices.

EncrypType Select whether to use WEP, TKIP or AES encryption for your WDS connection in this field.

Otherwise, select No Security.

EncrypKey The Encryp key is used to encrypt data. Peers must use the same key for data transmission.

Apply Click Apply to save your changes to Router.

Cancel Click Cancel to reload the previous configuration for this screen.NBG6503 User’s Guide 99 CHAPTER 11

This chapter discusses the Router’s WAN screens. Use these screens to configure your Router for Internet access.A WAN (Wide Area Network) connection is an outside connection to another network or the Internet. It connects your private networks such as a LAN (Local Area Network) and other networks, so that a computer in one location can communicate with computers in other locations. Figure 70 LAN and WAN 11.2 What You Can Do

•Use the Internet Connection screen (Section 11.4 on page 102) to enter your ISP information and set how the computer acquires its IP, DNS and WAN MAC addresses. •Use the Advanced screen (Section 11.5 on page 108) to enable multicasting, configure Windows networking and bridge. 11.3 What You Need To Know The information in this section can help you configure the screens for your WAN connection, as well as enable/disable some advanced features of your Router.

RouterChapter 11 WAN NBG6503 User’s Guide

Encapsulation Method

Encapsulation is used to include data from an upper layer protocol into a lower layer protocol. To set

up a WAN connection to the Internet, you need to use the same encapsulation method used by your

ISP (Internet Service Provider). If your ISP offers a dial-up Internet connection using PPPoE (PPP

over Ethernet) or PPTP (Point-to-Point Tunneling Protocol), they should also provide a username

and password (and service name) for user authentication.

The WAN IP address is an IP address for the Router, which makes it accessible from an outside

network. It is used by the Router to communicate with other devices in other networks. It can be

static (fixed) or dynamically assigned by the ISP each time the Router tries to access the Internet.

If your ISP assigns you a static WAN IP address, they should also assign you the subnet mask and

DNS server IP address(es) (and a gateway IP address if you use the Ethernet or ENET ENCAP

encapsulation method).

DNS Server Address Assignment

Use Domain Name System (DNS) 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

The Router can get the DNS server addresses in the following ways.

1 The ISP 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 Router’s WAN IP

address), set the DNS server fields to get the DNS server address from the ISP.

The MAC address screen allows users to configure the WAN port's MAC address by either using the

factory default or cloning the MAC address from a computer on your LAN. Choose Factory Default

to select the factory assigned default MAC Address.

Otherwise, click Clone the computer's MAC address - IP Address 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 configuration file. It is recommended that you clone the MAC address prior

to hooking up the WAN Port.Chapter 11 WAN NBG6503 User’s Guide

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.

Figure 71 Multicast Example

In the multicast example above, systems A and D comprise one multicast group. In multicasting,

the server only needs to send one data stream and this is delivered to systems A and D.

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. The Router supports both IGMP version 1

(IGMP-v1) and IGMP version 2 (IGMP-v2).

At start up, the Router queries all directly connected networks to gather group membership. After

that, the Router periodically updates this information. IP multicasting can be enabled/disabled on

the Router LAN and/or WAN interfaces in the Web Configurator (LAN; WAN). Select None to

disable IP multicasting on these interfaces.

11.4 Internet Connection

Use this screen to change your Router’s Internet access settings. Click WAN from the Configuration

menu. The screen differs according to the encapsulation you choose.

11.4.1 Ethernet Encapsulation

This screen displays when you select Ethernet encapsulation.

The following table describes the labels in this screen.

Table 42 Network > WAN > Internet Connection: Ethernet Encapsulation

LABEL DESCRIPTION ISP Parameters for Internet Access

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

WAN IP Address Assignment

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

Use Fixed IP Address

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

IP Address Enter your WAN IP address in this field if you selected Use Fixed IP Address.Chapter 11 WAN NBG6503 User’s Guide

11.4.2 PPPoE Encapsulation

The Router 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 PPP over Ethernet 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 Router (rather than individual computers), the computers on

the LAN do not need PPPoE software installed, since the Router does that part of the task.

Furthermore, with NAT, all of the LANs’ computers will have access.

Enter the IP Subnet Mask in this field.

Enter a Gateway IP Address (if your ISP gave you one) in this field.

MTU Size Enter the Maximum Transmission Unit (MTU) or the largest packet size per frame that your

Router can receive and process.

Select From ISP if your ISP dynamically assigns DNS server information (and the Router's

WAN IP address). The field to the right displays the (read-only) DNS server IP address that

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 None if you do not want to configure DNS servers. If you do not configure a DNS

server, you must know the IP address of a computer in order to access it.

The MAC address section allows users to configure the WAN port's MAC address by either

using the Router’s MAC address, copying the MAC address from a computer on your LAN or

manually entering a MAC address.

Factory default Select Factory default to use the factory assigned default MAC Address.

Select Clone the computer's MAC address - IP Address and enter the IP address of the

computer on the LAN whose MAC you are cloning.

Select this option and enter the MAC address you want to use.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 42 Network > WAN > Internet Connection: Ethernet Encapsulation (continued)

The following table describes the labels in this screen.

Table 43 Network > WAN > Internet Connection: PPPoE Encapsulation

LABEL DESCRIPTION ISP Parameters for Internet Access

Encapsulation Select PPP over Ethernet if you connect to your Internet via dial-up.

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

Password Type the password associated with the user name above.

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

MTU Size Enter the Maximum Transmission Unit (MTU) or the largest packet size per frame that your

Router can receive and process.

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

This value specifies the time in minutes that elapses before the router automatically

disconnects from the PPPoE server.

WAN IP Address AssignmentChapter 11 WAN NBG6503 User’s Guide

11.4.3 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-

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

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

Use Fixed IP Address

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

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

Select From ISP if your ISP dynamically assigns DNS server information (and the

Router's WAN IP address). The field to the right displays the (read-only) DNS server IP

address that the ISP assigns.

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 None if you do not want to configure DNS servers. If you do not configure a DNS

server, you must know the IP address of a computer in order to access it.

The MAC address section allows users to configure the WAN port's MAC address by using

the Router’s MAC address, copying the MAC address from a computer on your LAN or

manually entering a MAC address.

Factory default Select Factory default to use the factory assigned default MAC Address.

address - IP Address

Select Clone the computer's MAC address - IP Address and enter the IP address of

the computer on the LAN whose MAC you are cloning.

Select this option and enter the MAC address you want to use.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 43 Network > WAN > Internet Connection: PPPoE Encapsulation (continued)

The following table describes the labels in this screen.

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.

Type your password again to make sure that you have entered is correctly.Chapter 11 WAN NBG6503 User’s Guide

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

Idle Timeout This value specifies the time in minutes that elapses before the Router automatically

disconnects from the PPTP server.

Type the IP address of the PPTP server.

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

Use Fixed IP Address

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

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

Your Router 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

Enter a Gateway IP Address (if your ISP gave you one) in this field.

WAN IP Address Assignment

from ISP Select this to get your WAN IP address from your ISP.

Use Fixed IP Address

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

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

Select From ISP if your ISP dynamically assigns DNS server information (and the Router's

WAN IP address). The field to the right displays the (read-only) DNS server IP address that

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 None if you do not want to configure DNS servers. If you do not configure a DNS

server, you must know the IP address of a computer in order to access it.

The MAC address section allows users to configure the WAN port's MAC address by either

using the Router’s MAC address, copying the MAC address from a computer on your LAN or

manually entering a MAC address.

Factory default Select Factory default to use the factory assigned default MAC Address.

Select Clone the computer's MAC address - IP Address and enter the IP address of the

computer on the LAN whose MAC you are cloning.

Select this option and enter the MAC address you want to use.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 44 Network > WAN > Internet Connection: PPTP Encapsulation (continued)

LABEL DESCRIPTIONChapter 11 WAN NBG6503 User’s Guide

Use this screen to enable Multicast and enable Auto-bridge.

Note: The categories shown in this screen are independent of each other.

To change your Router’s advanced WAN settings, click Network > WAN > Advanced. The screen

Figure 75 Network > WAN > Advanced

The following table describes the labels in this screen.

Table 45 Network > WAN > Advanced

LABEL DESCRIPTION Multicast Setup

Multicast Select IGMPv1/v2 to enable multicasting. This applies to traffic routed from the WAN to

Select None to disable this feature. This may cause incoming traffic to be dropped or sent

to all connected network devices.

None Select this option to have the Router do nothing when it gets a WAN IP address in the range

of 192.168.x.y (where x and y are from zero to nine) or in the same subnet as the LAN IP

Select this option to have the Router switch to bridge mode automatically when the Router

gets a WAN IP address in the range of 192.168.x.y (where x and y are from zero to nine) no

matter what the LAN IP address is.

Select this option to have the Router change its LAN IP address to 10.0.0.1 or 192.168.1.1

accordingly when the Router gets a dynamic WAN IP address in the same subnet as the LAN IP address 192.168.1.1 or 10.0.0.1.

The NAT, DHCP server and firewall functions on the Router are still available in thismode.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.NBG6503 User’s Guide 109 CHAPTER 12

12.1 Overview This chapter describes how to configure LAN settings.A Local Area Network (LAN) is a shared communication system to which many computers are attached. A LAN is a computer network limited to the immediate area, usually the same building or floor of a building. The LAN screens can help you configure a LAN DHCP server, manage IP addresses, and partition your physical network into logical networks.Figure 76 LAN ExampleThe LAN screens can help you manage IP addresses. 12.2 What You Can Do

•Use the IP screen (Section 12.4 on page 111) to change the IP address for your Router.

•Use the IP Alias screen (Section 12.5 on page 111) to have the Router apply IP alias to create

LAN subnets.Chapter 12 LAN NBG6503 User’s Guide

12.3 What You Need To Know

The actual physical connection determines whether the Router ports are LAN or WAN ports. There

are two separate IP networks, one inside the LAN network and the other outside the WAN network

Figure 77 LAN and WAN IP Addresses

The LAN parameters of the Router are preset in the factory with the following values:

• IP address of 192.168.1.1 with subnet mask of 255.255.255.0 (24 bits)

• DHCP server enabled with 32 client IP addresses starting from 192.168.1.33.

These parameters should work for the majority of installations. If your ISP gives you explicit DNS

server address(es), read the embedded Web Configurator help regarding what fields need to be

12.3.1 IP Pool Setup

The Router is pre-configured with a pool of 32 IP addresses starting from 192.168.1.33 to

192.168.1.64. This configuration leaves 31 IP addresses (excluding the Router itself) in the lower

range (192.168.1.2 to 192.168.1.32) for other server computers, for instance, servers for mail,

FTP, TFTP, web, etc., that you may have.

12.3.2 LAN TCP/IP The Router has built-in DHCP server capability that assigns IP addresses and DNS servers to

systems that support DHCP client capability.

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

Ethernet interface. The Router supports three logical LAN interfaces via its single physical Ethernet

interface with the Router itself as the gateway for each LAN network.Chapter 12 LAN NBG6503 User’s Guide

Use this screen to change the IP address for your Router. Click Network > LAN > IP.

Figure 78 Network > LAN > IP The following table describes the labels in this screen.

12.5 IP Alias Screen

Use this screen to have the Router apply IP alias to create LAN subnets. Click LAN > IP Alias.

Figure 79 Network > LAN > IP Alias

The following table describes the labels in this screen.

Table 46 Network > LAN > IP LABEL DESCRIPTION IP Address Type the IP address of your Router in dotted decimal notation.

IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your Router 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 Router.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 47 Network > LAN > IP Alias

LABEL DESCRIPTION IP Alias Check this to enable IP alias.

IP Address Type the IP alias address of your Router in dotted decimal notation.Chapter 12 LAN NBG6503 User’s Guide

IP Subnet Mask The subnet mask specifies the network number portion of an IP address. Your Router 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 Router.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 47 Network > LAN > IP Alias (continued)

LABEL DESCRIPTIONNBG6503 User’s Guide 113 CHAPTER 13

13.1 Overview 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 Router’s LAN as a DHCP server or disable it. When configured as a server, the Router 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. 13.2 What You Can Do

•Use the General (Section 13.3 on page 113) screen to enable the DHCP server.

•Use the Advanced (Section 13.4 on page 114) screen to assign IP addresses on the LAN to specific individual computers based on their MAC Addresses. 13.3 General Screen

Use this screen to enable the DHCP server. Click Network > DHCP Server. The following screen displays.Figure 80 Network > DHCP Server > General The following table describes the labels in this screen.Table 48 Network > DHCP Server > General LABEL DESCRIPTIONEnable DHCP ServerEnable or Disable DHCP for LAN.IP Pool Starting AddressThis field specifies the first of the contiguous addresses in the IP address pool for LAN.Chapter 13 DHCP Server

13.4 Advanced Screen

This screen allows you to assign IP addresses on the LAN to specific individual computers based on

their MAC addresses. You can also use this screen to configure the DNS server information that the

Router sends to the DHCP clients.

To change your Router’s static DHCP settings, click Network > DHCP Server > Advanced. The

following screen displays.

Figure 81 Network > DHCP Server > Advanced

The following table describes the labels in this screen.

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

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 48 Network > DHCP Server > General (continued)

LABEL DESCRIPTION Table 49 Network > DHCP Server > Advanced

LABEL DESCRIPTION LAN Static DHCP Table

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

MAC Address Type the MAC address (with colons) of a computer on your LAN.Chapter 13 DHCP Server

NBG6503 User’s Guide

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

The Router passes a DNS (Domain Name System) server IP address (in the order you

specify here) to the DHCP clients. The Router only passes this information to the LAN DHCP

clients when you select the Enable DHCP Server check box. When you clear the Enable

DHCP Server check box, DHCP service is disabled and you must have another DHCP sever

on your LAN, or else the computers must have their DNS server addresses manually

Select From ISP if your ISP dynamically assigns DNS server information (and the Router's

WAN IP address). The field to the right displays the (read-only) DNS server IP address that

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 Router act as a DNS proxy. The Router's LAN IP address

displays in the field to the right (read-only). The Router tells the DHCP clients on the LAN

that the Router itself is the DNS server. When a computer on the LAN sends a DNS query to

the Router, the Router forwards the query to the Router's system DNS server (configured in

the WAN > Internet Connection 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. 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 back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 49 Network > DHCP Server > Advanced (continued)

Network Address Translation (NAT)

14.1 Overview 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. Each packet has two addresses – a source address and a destination address. For outgoing packets,

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 in each packet and then

forwards it to the Internet. The Router keeps track of the original addresses and port numbers so

incoming reply packets can have their original values restored. The following figure illustrates this. Figure 82 NAT Example For more information on IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT). 14.2 What You Can Do

•Use the General screen (Section 14.3 on page 118) to enable NAT and set a default server.

•Use the Application screen (Section 14.4 on page 118) o forward incoming service requests to the server(s) on your local network. •Use the Advanced screen (Section 14.5 on page 120) to change your Router’s trigger port settings.Chapter 14 Network Address Translation (NAT)

NBG6503 User’s Guide

14.3 General NAT Screen

Use this screen to enable NAT and set a default server. Click Network > NAT > General to open

the following screen.

Figure 83 Network > NAT > General

The following table describes the labels in this screen.

14.4 NAT Application Screen

Use the Application screen to forward incoming service requests to the server(s) on your local

network. 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.

In addition to the servers for specified services, NAT supports a default server. A service request

that does not have a server explicitly designated for it is forwarded to the default server. If the

default is not defined, the service request is simply discarded.

Table 50 Network > NAT > General

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

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 the Application screen.

If you do not assign a Default Server IP address, the Router discards all packets received

for ports that are not specified in the Application screen or remote management.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.Chapter 14 Network Address Translation (NAT)

NBG6503 User’s Guide

Note: 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.

Port forwarding allows you to define the local servers to which the incoming services will be

forwarded. To change your Router’s port forwarding settings, click Network > NAT > Application.

The screen appears as shown.

Note: If you do not assign a Default Server IP address in the NAT > General screen,

the Router discards all packets received for ports that are not specified in this

screen or remote management.

Refer to Appendix D on page 223 for port numbers commonly used for particular services.

Figure 84 Network > NAT > Application

The following table describes the labels in this screen.

Table 51 Network > NAT > Application

LABEL DESCRIPTION Add Application Rule

Active Select the check box to enable this rule and the requested service can be forwarded to the

host with a specified internal IP address.

Clear the checkbox to disallow forwarding of these ports to an inside server without having

to delete the entry.

Service Name Type a name (of up to 31 printable characters) to identify this rule in the first field next to

Service Name. Otherwise, select a predefined service in the second field next to Service

Name. The predefined service name and port number(s) will display in the Service Name

Port Type a port number(s) to define the service to be forwarded to the specified server.

To specify a range of ports, enter a hyphen (-) between the first port and the last port, such

To specify two or more non-consecutive port numbers, separate them by a comma without

spaces, such as 123,567.

Type the IP address of the server on your LAN that receives packets from the port(s)

14.5 NAT Advanced Screen

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 Router 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

Router's WAN port receives a response with a specific port number and protocol ("incoming" port),

the Router 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.

To change your Router’s trigger port settings, click Network > NAT > Advanced. The screen

Application Rules Summary

# This is the number of an individual port forwarding server entry.

Active This icon is turned on when the rule is enabled.

Name This field displays a name to identify this rule.

Port This field displays the port number(s).

This field displays the inside IP address of the server.

Modify Click the Edit icon to display and modify an existing rule setting in the fields under Add

Click the Remove icon to delete a rule.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.

Table 51 Network > NAT > Application (continued)

LABEL DESCRIPTIONChapter 14 Network Address Translation (NAT)

NBG6503 User’s Guide

Note: Only one LAN computer can use a trigger port (range) at a time.

Figure 85 Network > NAT > Advanced

The following table describes the labels in this screen.

Table 52 Network > NAT > Advanced

# This is the rule index number (read-only).

Name Type a unique name (up to 15 characters) for identification purposes. All characters are

permitted - including spaces.

Incoming Incoming is a port (or a range of ports) that a server on the WAN uses when it sends out a

particular service. The Router forwards the traffic with this port (or range of ports) to the

client computer on the LAN that requested the service.

Start Port Type a port number or the starting port number in a range of port numbers.

End Port Type a port number or the ending port number in a range of port numbers.

Trigger The trigger port is a port (or a range of ports) that causes (or triggers) the Router to record

the IP address of the LAN computer that sent the traffic to a server on the WAN.

Start Port Type a port number or the starting port number in a range of port numbers.

End Port Type a port number or the ending port number in a range of port numbers.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.Chapter 14 Network Address Translation (NAT)

14.5.1 Trigger Port Forwarding Example

The following is an example of trigger port forwarding.

Figure 86 Trigger Port Forwarding Process: Example

1 Jane requests a file from the Real Audio server (port 7070).

2 Port 7070 is a “trigger” port and causes the Router to record Jane’s computer IP address. The

Router 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.

4 The Router 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

Router times out in three minutes with UDP (User Datagram Protocol), or two hours with TCP/IP

(Transfer Control Protocol/Internet Protocol).

14.5.2 Two Points To Remember About Trigger Ports

1 Trigger events only happen on data that is going coming from inside the Router and going to the

2 If an application needs a continuous data stream, that port (range) will be tied up so that another

computer on the LAN can’t trigger it.

RouterNBG6503 User’s Guide 123 CHAPTER 15

15.1 Overview Dynamic DNS (DDNS) services let you use a domain name with a dynamic IP address. 15.2 What You Can Do

Use the Dynamic DNS screen (Section 15.4 on page 123) to enable DDNS and configure the DDNS settings on the Router. 15.3 What You Need To Know 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. 15.4 Dynamic DNS Screen

To change your Router’s DDNS, click Network > DDNS. The screen appears as shown.

Figure 87 Network > DDNSChapter 15 Dynamic DNS NBG6503 User’s Guide

The following table describes the labels in this screen.

Table 53 Network > DDNS LABEL DESCRIPTION Enable

Dynamic DNS Select this check box to use dynamic DNS.

Select the name of your Dynamic DNS service provider.

Host Name Enter a host names in the field provided. You can specify up to two host names in the field

separated by a comma (",").

User Name Enter your user name.

Password Enter the password assigned to you.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.NBG6503 User’s Guide 125 CHAPTER 16

16.1 Overview This chapter shows you how to configure static routes for your Router. Each remote node specifies only the network to which the gateway is directly connected, and the

Router has no knowledge of the networks beyond. For instance, the Router knows about network

N2 in the following figure through remote node Router 1. However, the Router is unable to route a

packet to network N3 because it doesn't know that there is a route through the same remote node Router 1 (via gateway Router 2). The static routes are for you to tell the Router about the networks beyond the remote nodes.Figure 88 Example of Static Routing Topology 16.2 What You Can Do

Use the IP Static Route screen (Section 16.3 on page 126) to view, add and delete routes.Chapter 16 Static Route

NBG6503 User’s Guide

16.3 IP Static Route Screen

Click Network > Static Route to open the IP Static Route screen.

Figure 89 Network > Static Route

The following table describes the labels in this screen.

Table 54 Network > Static Route

LABEL DESCRIPTION Static Routing Settings

Route Name Enter a the name that describes or identifies this route.

Destination IP Address

Enter the IP network address of the final destination.

This is the subnet to which the route’s final destination belongs.

Enter the the IP address of the gateway.

Metric Assign a number to identify the route.

Add Rule Click this to add the IP static route.

Application Rules Summary

No. This is the number of an individual static route.

Active The rules are always on and this is indicated by the icon.

Name This is the name that describes or identifies this route.Chapter 16 Static Route

NBG6503 User’s Guide

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 device's LAN or WAN port. The gateway helps

forward packets to their destinations.

Metric This is the number assigned to the route.

Delete Click the Delete icon to remove a static route from the Router. A window displays

asking you to confirm that you want to delete the route.

Table 54 Network > Static Route

LABEL DESCRIPTIONChapter 16 Static Route

This chapter shows you how to enable and configure the firewall that protects your Router and your LAN from unwanted or malicious traffic.Enable the firewall to protect your LAN computers from attacks by hackers on the Internet and control access between the LAN 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. 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 90 Default Firewall Action 17.2 What You Can Do

•Use the General (Section 17.4 on page 130) screen to enable or disable the Router’s firewall.

•Use the Services screen (Section 17.5 on page 131) screen enable service blocking, enter/ delete/modify the services you want to block and the date/time you want to block them.Chapter 17 Firewall

NBG6503 User’s Guide

17.3 What You Need To Know

The Router’s firewall feature physically separates the LAN and the WAN and acts as a secure

gateway for all data passing between the networks.

It is designed to protect against Denial of Service (DoS) attacks when activated (click the General

tab under Firewall and then click the Enable Firewall check box). The Router's purpose is to

allow a private Local Area Network (LAN) to be securely connected to the Internet. The Router can

be used to prevent theft, destruction and modification of data, as well as log events, which may be

important to the security of your network.

The Router is installed between the LAN and a broadband modem connecting to the Internet. This

allows it to act as a secure gateway for all data passing between the Internet and the LAN.

The Router has one Ethernet WAN port and four Ethernet LAN ports, which are used to physically

separate the network into two areas.The WAN (Wide Area Network) port attaches to the broadband

(cable or DSL) modem to the Internet.

The LAN (Local Area Network) port attaches to a network of computers, which needs security from

the outside world. These computers will have access to Internet services such as e-mail, FTP and

the World Wide Web. However, "inbound access" is not allowed (by default) unless the remote host

is authorized to use a specific service.

17.4 General Firewall Screen

Use this screen to enable or disable the Router’s firewall, and set up firewall logs. Click Security >

Firewall to open the General screen.

Figure 91 Security > Firewall > General

The following table describes the labels in this screen.

Table 55 Security > Firewall > General

LABEL DESCRIPTION Enable Firewall Select this check box to activate the firewall. The Router performs access control and

protects against Denial of Service (DoS) attacks when the firewall is activated.

Apply Click Apply to save the settings.

Reset Click Reset to start configuring this screen again.Chapter 17 Firewall

17.5 Services Screen

If an outside user attempts to probe an unsupported port on your Router, an ICMP response packet

is automatically returned. This allows the outside user to know the Router exists. Use this screen to

prevent the ICMP response packet from being sent. This keeps outsiders from discovering your

Router when unsupported ports are probed.

You can also use this screen to enable service blocking, enter/delete/modify the services you want

to block and the date/time you want to block them.

Click Security > Firewall > Services. The screen appears as shown next.

Figure 92 Security > Firewall > Services

The following table describes the labels in this screen.

Table 56 Security > Firewall > Services

LABEL DESCRIPTION ICMP Internet Control Message Protocol is a message control and error-reporting protocol

between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP)

datagrams, but the messages are processed by the TCP/IP software and directly apparent

to the application user.

The Router will not respond to any incoming Ping requests when Disable is selected. Select

LAN to reply to incoming LAN Ping requests. Select WAN to reply to incoming WAN Ping

requests. Otherwise select LAN & WAN to reply to all incoming LAN and WAN Ping

See Appendix D on page 223 for commonly used services and port numbers.

Select this check box to activate the firewall rules that you define (see Add Firewall Rule

Apply Click Apply to save the settings.

Service Name Enter a name that identifies or describes the firewall rule.

MAC Address Enter the MAC address of the computer for which the firewall rule applies.

Dest IP Address Enter the IP address of the computer to which traffic for the application or service is

The Router applies the firewall rule to traffic initiating from this computer.

Enter the IP address of the computer that initializes traffic for the application or service.

The Router applies the firewall rule to traffic initiating from this computer.

Protocol Select the protocol (TCP, UDP, ICMP or None) used to transport the packets for which you

want to apply the firewall rule.

Enter the port number/range of the destination that define the traffic type, for example TCP

Enter the port number/range of the source that define the traffic type, for example TCP port

80 defines web traffic.

Add Rule Click Add to save the firewall rule.

# This is your firewall rule number. The ordering of your rules is important as rules are applied

Service Name This is a name that identifies or describes the firewall rule.

MAC Address This is the MAC address of the computer for which the firewall rule applies.

Dest IP Address This is the IP address of the computer to which traffic for the application or service is

This is the IP address of the computer from which traffic for the application or service is

Protocol This is the protocol (TCP, UDP, ICMP or None) used to transport the packets for which you

want to apply the firewall rule.

This is the port number/range of the destination that define the traffic type, for example

This is the port number/range of the source that define the traffic type, for example TCP

port 80 defines web traffic.

Action Drop - Traffic matching the conditions of the firewall rule are stopped.

Delete Click this to remove the firewall rule.

Reset Click Reset to start configuring this screen again.

Table 56 Security > Firewall > Services (continued)

LABEL DESCRIPTIONNBG6503 User’s Guide 133 CHAPTER 18

18.1 Overview This chapter provides a brief overview of content filtering using the embedded web GUI.Internet content filtering allows you to create and enforce Internet access policies tailored to your needs. Content filtering is the ability to block certain web features or specific URL keywords.

18.2 What You Can Do

Use the Content Filter (Section 18.4 on page 134) screen to restrict web features, add keywords for blocking and designate a trusted computer. 18.3 What You Need To Know Content filtering allows you to block certain web features, such as cookies, and/or block access to specific web sites. For example, you can configure one policy that blocks John Doe’s access to arts and entertainment web pages. 18.3.1 Content Filtering Profiles

A content filtering profile conveniently stores your custom settings for the following features. Restrict Web FeaturesThe Router can disable web proxies and block web features such as ActiveX controls, Java applets and cookies.Keyword Blocking URL CheckingThe Router checks the URL’s domain name (or IP address) and file path separately when performing keyword blocking. The URL’s domain name or IP address is the characters that come before the first slash in the URL. For example, with the URL www.zyxel.com.tw/news/pressroom.php, the domain name is www.zyxel.com.tw .

The file path is the characters that come after the first slash in the URL. For example, with the URL www.zyxel.com.tw/news/pressroom.php, the file path is news/pressroom.php.Chapter 18 Content Filter

NBG6503 User’s Guide

Since the Router checks the URL’s domain name (or IP address) and file path separately, it will not

find items that go across the two. For example, with the URL www.zyxel.com.tw/news/

pressroom.php, the Router would find “tw” in the domain name (www.zyxel.com.tw). It would also

find “news” in the file path (news/pressroom.php

) but it would not find “tw/news”.

18.4 Content Filter Screen

Use this screen to restrict web features, add keywords for blocking and designate a trusted

Click Security > Content Filter to open the Content Filter screen.

The following table describes the labels in this screen.

Table 57 Security > Content Filter > Content Filter

LABEL DESCRIPTION Trusted IP Setup

To enable this feature, type an IP address of any one of the computers in your network that

you want to have as a trusted computer. This allows the trusted computer to have full

access to all features that are configured to be blocked by content filtering.

Leave this field blank to have no trusted computers.

Select the box(es) to restrict a feature. When you download a page containing a restricted

feature, that part of the web page will appear blank or grayed out.

ActiveX A tool for building dynamic and active Web pages and distributed object applications. When

you visit an ActiveX Web site, ActiveX controls are downloaded to your browser, where they

remain in case you visit the site again.

Java A programming language and development environment for building downloadable Web

components or Internet and intranet business applications of all kinds.Chapter 18 Content Filter

NBG6503 User’s Guide

Cookies Used by Web servers to track usage and provide service based on ID.

Web Proxy A server that acts as an intermediary between a user and the Internet to provide security,

administrative control, and caching service. When a proxy server is located on the WAN it is

possible for LAN users to circumvent content filtering by pointing to this proxy server.

The Router can block Web sites with URLs that contain certain keywords in the domain name

or IP address. For example, if the keyword "bad" was enabled, all sites containing this

keyword in the domain name or IP address will be blocked, e.g., URL http://

www.website.com/bad.html would be blocked. Select this check box to enable this feature.

Keyword Type a keyword in this field. You may use any character (up to 64 characters). Wildcards are

not allowed. You can also enter a numerical IP address.

Keyword List This list displays the keywords already added.

Add Click Add after you have typed a keyword.

Repeat this procedure to add other keywords. Up to 64 keywords are allowed.

When you try to access a web page containing a keyword, you will get a message telling you

that the content filter is blocking this request.

Delete Highlight a keyword in the lower box and click Delete to remove it. The keyword disappears

from the text box after you click Apply.

Clear All Click this button to remove all of the listed keywords.

Apply Click Apply to save your changes.

Reset Click Reset to begin configuring this screen afresh

Table 57 Security > Content Filter > Content Filter (continued)

Bandwidth Management

19.1 Overview This chapter contains information about configuring bandwidth management and editing rules.ZyXEL’s Bandwidth Management allows you to specify bandwidth management rules based on an application. In the figure below, uplink traffic goes from the LAN device (A) to the WAN device (B). Bandwidth management is applied before sending the packets out to the WAN. Downlink traffic comes back from the WAN device (B) to the LAN device (A). Bandwidth management is applied before sending the traffic out to LAN.Figure 94 Bandwidth Management ExampleYou can allocate specific amounts of bandwidth capacity (bandwidth budgets) to individual applications (like VoIP, Web, FTP, and E-mail for example). 19.2 What You Can Do

•Use the General screen (Section 19.4 on page 138) to enable bandwidth management and assign bandwidth values. •Use the Advanced screen (Section 19.5 on page 138) to configure bandwidth managements rule for the pre-defined services and applications. •Use the Monitor screen (Section 19.6 on page 143) to view the amount of network bandwidth that applications running in the network are using.

A B -> VOIP-> FTP-> HTTP-> Chat, EmailChapter 19 Bandwidth Management

19.3 What You Need To Know

The sum of the bandwidth allotments that apply to the WAN interface (LAN to WAN, WLAN to WAN)

must be less than or equal to the Upstream Bandwidth that you configure in the Bandwidth

Management Advanced screen (Section 19.5 on page 138).

The sum of the bandwidth allotments that apply to the LAN interface (WAN to LAN, WAN to WLAN)

must be less than or equal to the Downstream Bandwidth that you configure in the Bandwidth

Management Advanced screen Section 19.5 on page 138.

Use this screen to have the Router apply bandwidth management.

Click Management > Bandwidth Management to open the bandwidth management General

Figure 95 Management > Bandwidth Management > General

The following table describes the labels in this screen.

19.5 Advanced Screen

Use this screen to configure bandwidth management rules for the pre-defined services or

You can also use this screen to configure bandwidth management rule for other services or

applications that are not on the pre-defined list of Router. Additionally, you can define the source

and destination IP addresses and port for a service or application.

Table 58 Management > Bandwidth Management > General

This field allows you to have Router apply bandwidth management.

Enable bandwidth management to give traffic that matches a bandwidth rule priority over

traffic that does not match a bandwidth rule.

Enabling bandwidth management also allows you to control the maximum or minimum

amounts of bandwidth that can be used by traffic that matches a bandwidth rule.

Apply Click Apply to save your customized settings.

Reset Click Reset to begin configuring this screen afresh.Chapter 19 Bandwidth Management

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Note: The two tables shown in this screen can be configured and applied at the same

Click Management > Bandwidth Management > Advanced to open the bandwidth

management Advanced screen.

Figure 96 Management > Bandwidth Management > Advanced

The following table describes the labels in this screen.Chapter 19 Bandwidth Management

Select the total amount of bandwidth (from 64 Kilobits to 50 Megabits) that you want to

dedicate to uplink traffic.

This is traffic from LAN/WLAN to WAN.

Select the total amount of bandwidth (from 64 Kilobits to 50 Megabits) that you want to

dedicate to uplink traffic.

This is traffic from WAN to LAN/WLAN.

Application List Use this table to allocate specific amounts of bandwidth based on a pre-defined service.

# This is the number of an individual bandwidth management rule.

Priority Select a priority from the drop down list box. Choose High, Mid or Low.

• High - Select this for voice traffic or video that is especially sensitive to jitter (jitter is

the variations in delay).

• Mid - Select this for "excellent effort" or better than best effort and would include

important business traffic that can tolerate some delay.

• Low - Select this for non-critical "background" traffic such as bulk transfers that are

allowed but that should not affect other applications and users.

Category This is the category where a service belongs.

Service This is the name of the service.

Select the check box to have the Router apply this bandwidth management rule.

Click the Edit icon to open the Rule Configuration screen where you can modify the rule.

Use this table to allocate specific amounts of bandwidth to specific applications or services

# This is the number of an individual bandwidth management rule.

Enable Select this check box to have the Router apply this bandwidth management rule.

Direction Select TO LAN/WLAN to apply bandwidth management to traffic from WAN to LAN/WLAN.

Select TO WAN to apply bandwidth management to traffic from LAN/WLAN to WAN.

Service Name Enter a descriptive name for the bandwidth management rule.

Category This is the category where a service belongs.

Modify Click the Edit icon to open the Rule Configuration screen. Modify an existing rule or

create a new rule in the Rule Configuration screen. See Section 19.5.2 on page 142 for

Click the Remove icon to delete a rule.

Apply Click Apply to save your customized settings.

Reset Click Reset to begin configuring this screen afresh.Chapter 19 Bandwidth Management

19.5.1 Rule Configuration: Application Rule Configuration

If you want to edit a bandwidth management rule for a pre-defined service or application, click the

Edit icon in the Application List table of the Advanced screen. The following screen displays.

Figure 97 Bandwidth Management Rule Configuration: Application List

The following table describes the labels in this screen.

Table 60 Bandwidth Management Rule Configuration: Application List

# This is the number of an individual bandwidth management rule.

Enable Select an interface’s check box to enable bandwidth management on that interface.

Direction These read-only labels represent the physical interfaces. Bandwidth management applies to

all traffic flowing out of the router through the interface, regardless of the traffic’s source.

Traffic redirect or IP alias may cause LAN-to-LAN traffic to pass through the Router and be

managed by bandwidth management.

Bandwidth Select Maximum Bandwidth or Minimum Bandwidth and specify the maximum or

minimum bandwidth allowed for the rule in kilobits per second.

Destination Port This is the port number of the destination that define the traffic type, for example TCP port

80 defines web traffic.

See Appendix D on page 223 for some common services and port numbers.

Source Port This is the port number of the source that define the traffic type, for example TCP port 80

defines web traffic.

See Appendix D on page 223 for some common services and port numbers.

Protocol This is the protocol (TCP, UDP or user-defined) used for the service.

Apply Click Apply to save your customized settings.

Cancel Click Cancel to exit this screen without saving.Chapter 19 Bandwidth Management

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19.5.2 Rule Configuration: User Defined Service Rule Configuration

If you want to edit a bandwidth management rule for other applications or services, click the Edit

icon in the User-defined Service table of the Advanced screen. The following screen displays.

Figure 98 Bandwidth Management Rule Configuration: User-defined Service

The following table describes the labels in this screen

Table 61 Bandwidth Management Rule Configuration: User-defined Service

See Appendix D on page 223 for commonly used services and port numbers.

LABEL DESCRIPTION BW Budget Select Maximum Bandwidth or Minimum Bandwidth and specify the maximum or

minimum bandwidth allowed for the rule in kilobits per second.

Enter the IP address of the destination computer.

The Router applies bandwidth management to the service or application that is entering this

Enter the subnet netmask of the destination of the traffic for which the bandwidth

management rule applies.

This is the port number of the destination that define the traffic type, for example TCP port

80 defines web traffic.

Source Address Enter the IP address of the computer that initializes traffic for the application or service.

The Router applies bandwidth management to traffic initiating from this computer.

Enter the subnet netmask of the computer initiating the traffic for which the bandwidth

management rule applies.

Source Port This is the port number of the source that define the traffic type, for example TCP port 80

defines web traffic.

Protocol Select the protocol (TCP, UDP, User defined) for which the bandwidth management rule

If you select User-defined, enter the protocol for which the bandwidth management rule

applies. For example, ICMP for ping traffic.

Apply Click Apply to save your customized settings.

Cancel Click Cancel to exit this screen without saving.Chapter 19 Bandwidth Management

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Use this screen to view the amount of network bandwidth that applications running in the network

The bandwidth is measured in kilobits per second (kbps).

The monitor shows what kinds of applications are running in the network, the maximum kbps that

each application can use, as well as the percentage of bandwidth it is using.

Figure 99 Management > Bandwidth Management > Monitor

19.6.1 Predefined Bandwidth Management Services

The following is a description of some services that you can select and to which you can apply

media bandwidth management in the Management > Bandwidth Management > Advanced

Table 62 Media Bandwidth Management Setup: Services

SERVICE DESCRIPTION FTP File Transfer Program enables fast transfer of files, including large files that may not be

WWW The World Wide Web (WWW) is an Internet system to distribute graphical, hyper-linked

information, based on Hyper Text Transfer Protocol (HTTP) - a client/server protocol for the

World Wide Web. The Web is not synonymous with the Internet; rather, it is just one service

on the Internet. Other services on the Internet include Internet Relay Chat and

Newsgroups. The Web is accessed through use of a browser.

E-Mail Electronic mail consists of messages sent through a computer network to specific groups or

individuals. Here are some default ports for e-mail:

VoIP (SIP) Sending voice signals over the Internet is called Voice over IP or VoIP. Session Initiated

Protocol (SIP) is an internationally recognized standard for implementing VoIP. 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 transported primarily over UDP but can also be transported over TCP.Chapter 19 Bandwidth Management

NBG6503 User’s Guide

BitTorrent BitTorrent is a free P2P (peer-to-peer) sharing tool allowing you to distribute large software

and media files. BitTorrent requires you to search for a file with a searching engine yourself.

It distributes files by corporation and trading, that is, the client downloads the file in small

pieces and share the pieces with other peers to get other half of the file.

Gaming Online gaming services lets you play multiplayer games on the Internet via broadband

technology. As of this writing, your Router supports Xbox, Playstation, Battlenet and MSN Game Zone.

Table 62 Media Bandwidth Management Setup: Services (continued)

SERVICE DESCRIPTIONNBG6503 User’s Guide 145 CHAPTER 20

20.1 Overview This chapter provides information on the Remote Management screens. Remote Management allows you to manage your Router from a remote location through the following interfaces:•LAN and WAN•LAN only•WAN onlyNote: The Router is managed using the Web Configurator. 20.2 What You Can Do

Use the WWW screen (Section 20.4 on page 146) to define the interface/s from which the Router can be managed remotely and specify a secure client that can manage the Router. 20.3 What You Need to Know Remote management over LAN or WAN will not work when: 1 The IP address in the Secured Client IP Address field (Section 20.4 on page 146) does not match the client IP address. If it does not match, the Router will disconnect the session immediately.2 There is already another remote management session. You may only have one remote management session running at one time.3 There is a firewall rule that blocks it. 20.3.1 Remote Management and NAT When NAT is enabled:• Use the Router’s WAN IP address when configuring from the WAN. • Use the Router’s LAN IP address when configuring from the LAN.Chapter 20 Remote Management

NBG6503 User’s Guide

20.3.2 System Timeout

There is a default system management idle timeout of five minutes (three hundred seconds). The

Router 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 System screen

To change your Router’s remote management settings, click Management > Remote

Figure 100 Management > Remote Management > WWW The following table describes the labels in this screen

Table 63 Management > Remote Management > WWW 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 Router using this service.

Select All to allow all computes to access the Router.

Otherwise, check Selected and specify the IP address of the computer that can access the

Apply Click Apply to save your customized settings and exit this screen.

Reset Click Reset to begin configuring this screen afresh.NBG6503 User’s Guide 147 CHAPTER 21

Universal Plug-and-Play (UPnP)

21.1 Overview This chapter introduces the UPnP feature in the web configurator. 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.

21.2 What You Can Do

Use the UPnP screen (Section 21.4 on page 148) to enable UPnP on your Router.

21.3 What You Need to Know

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. 21.3.1 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 mappingsWindows Messenger is an example of an application that supports NAT traversal and UPnP. See the NAT chapter for more information on NAT.Chapter 21 Universal Plug-and-Play (UPnP)

NBG6503 User’s Guide

21.3.2 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 Router allows multicast messages on the LAN only.

All UPnP-enabled devices may communicate freely with each other without additional configuration.

Disable UPnP if this is not your intention.

Use this screen to enable UPnP on your Router.

Click Management > UPnP to display the screen shown next.

Figure 101 Management > UPnP The following table describes the fields in this screen.

21.5 Technical Refereance

The sections show examples of using UPnP.

21.5.1 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 Router.

Table 64 Management > UPnP LABEL DESCRIPTION Enable the

Select this check box to activate UPnP. Be aware that anyone could use a UPnP application

to open the web configurator's login screen without entering the Router's IP address

(although you must still enter the password to access the web configurator).

Apply Click Apply to save the setting to the Router.

Reset Click Reset to return to the previously saved settings.Chapter 21 Universal Plug-and-Play (UPnP)

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Make sure the computer is connected to a LAN port of the Router. Turn on your computer and the

21.5.1.1 Auto-discover Your UPnP-enabled Network Device

1 Click start and Control Panel. Double-click Network Connections. An icon displays under

2 Right-click the icon and select Properties.

Figure 102 Network Connections

3 In the Internet Connection Properties window, click Settings to see the port mappings there

were automatically created.

Figure 103 Internet Connection PropertiesChapter 21 Universal Plug-and-Play (UPnP)

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4 You may edit or delete the port mappings or click Add to manually add port mappings.

Figure 104 Internet Connection Properties: Advanced Settings

Figure 105 Internet Connection Properties: Advanced Settings: Add

Note: When the UPnP-enabled device is disconnected from your computer, all port

mappings will be deleted automatically.

5 Select Show icon in notification area when connected option and click OK. An icon displays in

6 Double-click on the icon to display your current Internet connection status.

Figure 107 Internet Connection Status

21.5.2 Web Configurator Easy Access

With UPnP, you can access the web-based configurator on the Router without finding out the IP

address of the Router first. This comes helpful if you do not know the IP address of the Router.

Follow the steps below to access the web configurator.

1 Click Start and then Control Panel.

2 Double-click Network Connections.Chapter 21 Universal Plug-and-Play (UPnP)

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3 Select My Network Places under Other Places.

Figure 108 Network Connections

4 An icon with the description for each UPnP-enabled device displays under Local Network.

6 Right-click on the icon for your Router and select Properties. A properties window displays with

basic information about the Router.

Figure 110 Network Connections: My Network Places: Properties: ExampleChapter 21 Universal Plug-and-Play (UPnP)

NBG6503 User’s Guide

This chapter provides information on the Maintenance screens.

22.2 What You Can Do

•Use the General screen to configure system and domain name. You can also set the timeout

period of the management session (Section 22.3 on page 155).

•Use the Password screen to change your Router’s system password (Section 22.4 on page 156).

•Use the Time screen to change your Router’s time and date (Section 22.5 on page 157).

•Use the Firmware Upgrade screen to upload firmware to your Router (Section 22.6 on page 158). •Use the Backup/Restore screen to view information related to factory defaults, backup

configuration, and restoring configuration (Section 22.8 on page 161).

•Use the Restart screen to reboot the Router without turning the power off (Section 22.8 on page 161). •Use the Sys OP Mode screen to select how you want to use your Router (Section 22.10 on page 163). 22.3 General Screen Use this screen to set the configure system and domain name as well as management session timeout period. Click Maintenance > General. The following screen displays. Figure 111 Maintenance > GeneralChapter 22 Maintenance

NBG6503 User’s Guide

The following table describes the labels in this screen.

22.4 Password Screen

It is strongly recommended that you change your Router's password.

If you forget your Router's password (or IP address), you will need to reset the device. See Section

22.8 on page 161 for details.

Click Maintenance > Password. The screen appears as shown.

Figure 112 Maintenance > Password

The following table describes the labels in this screen.

Table 65 Maintenance > General

LABEL DESCRIPTION System Setup

System Name System Name is a unique name to identify the Router in an Ethernet network.

Domain Name Enter the domain name you want to give to the Router.

Type how many minutes a management session can be 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 back to the Router.

Cancel Click Cancel to begin configuring this screen afresh.

Table 66 Maintenance > Password

LABEL DESCRIPTION Password Setup Change your Router’s password (recommended) using the fields as shown.

Old Password Type the default password or the existing password you use to access the system in this

New Password Type your new system password (up to 30 characters). Note that as you type a password,

the screen displays an asterisk (*) for each character you type.

Type the new password again in this field.

Apply Click Apply to save your changes back to the Router.

Reset Click Reset to begin configuring this screen afresh.Chapter 22 Maintenance

22.5 Time Setting Screen

Use this screen to configure the Router’s time based on your local time zone. To change your

Router’s time and date, click Maintenance > Time. The screen appears as shown.

Figure 113 Maintenance > Time

The following table describes the labels in this screen.

Table 67 Maintenance > Time

LABEL DESCRIPTION Current Time and Date

Current Time This field displays the time of your Router.

Each time you reload this page, the Router synchronizes the time with the time server.

Current Date This field displays the date of your Router.

Each time you reload this page, the Router synchronizes the date with the time server.

Current Time and 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.

This field displays the last updated time from the time server or the last time configured

When you select Manual, enter the new time in this field and then click Apply.

When you select Manual, enter the new date in this field and then click Apply.Chapter 22 Maintenance

NBG6503 User’s Guide

22.6 Firmware Upgrade Screen

Find firmware at www.zyxel.com in a file that (usually) uses the system model name with a “*.bin”

extension, e.g., “Router.bin”. The upload process uses HTTP (Hypertext Transfer Protocol) and may

take up to two minutes. After a successful upload, the system will reboot.

Select this radio button to have the Router get the time and date from the time server

you specified below.

Auto Select Auto to have the Router automatically search for an available time server and

synchronize the date and time with the time server after you click Apply.

Select User Defined Time Server Address and enter the IP address or URL (up to 20

extended ASCII characters in length) of your time server. Check with your ISP/network

administrator if you are unsure of this information.

Time Zone Choose the time zone of your location. This will set the time difference between your time

zone and Greenwich Mean Time (GMT).

Daylight Savings Daylight saving is a period from late spring to early fall when many countries set 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 Daylight

Savings. 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 first Sunday of

April. 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 First, Sunday, April and select 2 in

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 select in the o'clock field depends on your time zone. In Germany for

instance, you would select 2 because Germany's time zone is one hour ahead of GMT or

End Date Configure the day and time when Daylight Saving Time ends if you selected Daylight

Savings. 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 last Sunday of October. 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 Last, Sunday, October and select 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 select in the o'clock field depends on your time zone. In

Germany for instance, you would select 2 because Germany's time zone is one hour

ahead of GMT or UTC (GMT+1).

Apply Click Apply to save your changes back to the Router.

Cancel Click Cancel to begin configuring this screen afresh.

Table 67 Maintenance > Time (continued)

LABEL DESCRIPTIONChapter 22 Maintenance

NBG6503 User’s Guide

Click Maintenance > Firmware Upgrade. Follow the instructions in this screen to upload

firmware to your Router.

Figure 114 Maintenance > Firmware Upgrade

The following table describes the labels in this screen.

Note: Do not turn off the Router while firmware upload is in progress!

After you see the Firmware Upload In Process screen, wait two minutes before logging into the

The Router automatically restarts in this time causing a temporary network disconnect. In some

operating systems, you may see the following icon on your desktop.

Figure 115 Network Temporarily Disconnected

After two minutes, log in again and check your new firmware version in the Status screen.

If the upload was not successful, an error message appears. Click Return to go back to the

Firmware Upgrade screen.

Table 68 Maintenance > Firmware Upgrade

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.

22.7 Configuration Backup/Restore Screen

Backup configuration allows you to back up (save) the Router’s current configuration to a file on

your computer. Once your Router is configured and functioning properly, it is 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.

Restore configuration allows you to upload a new or previously saved configuration file from your

computer to your Router.

Click Maintenance > Backup/Restore. Information related to factory defaults, backup

configuration, and restoring configuration appears as shown next.

Figure 116 Maintenance > Backup/Restore

The following table describes the labels in this screen.

Table 69 Maintenance > Backup/Restore

LABEL DESCRIPTION Backup Click Backup to save the Router’s current configuration to your computer.

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.Chapter 22 Maintenance

NBG6503 User’s Guide

Note: 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 Router IP

address (192.168.1.2). See Appendix B on page 181 for details on how to set up

your computer’s IP address.

System restart allows you to reboot the Router without turning the power off.

Click Maintenance > Restart to open the following screen.

Figure 117 Maintenance > Restart

Click Restart to have the Router reboot. This does not affect the Router's configuration.

22.9 System Operation Mode Overview

The Sys OP Mode (System Operation Mode) function lets you configure your Router as an access

point, wireless client or both at the same time. You can choose between Router and Access Point

Mode depending on your network topology and the features you require from your device.

The following describes the device modes available in your Router.

Upload Click Upload to begin the upload process.

Note: Do not turn off the Router while configuration file upload is in progress.

After you see a “configuration upload successful” screen, you must then wait one minute

before logging into the Router again. The Router automatically restarts in this time causing

a temporary network disconnect.

If you see an error screen, click Back to return to the Backup/Restore screen.

Reset Pressing the Reset button in this section clears all user-entered configuration information

and returns the Router to its factory defaults.

You can also press the RESET button on the rear panel to reset the factory defaults of your

Router. Refer to the chapter about introducing the Web Configurator for more information

on the RESET button.

Table 69 Maintenance > Backup/Restore (continued)

A router connects your local network with another network, such as the Internet. The router has

two IP addresses, the LAN IP address and the WAN IP address.

Figure 118 LAN and WAN IP Addresses in Router Mode

An access point enabled all ethernet ports to be bridged together and be in the same subnet. To

connect to the Internet, another device, such as a router, is required.

Figure 119 Access Point ModeChapter 22 Maintenance

Use this screen to select how you want to use your Router.

Figure 120 Maintenance > Sys OP Mode

The following table describes the labels in the General screen.

Note: If you select the incorrect System Operation Mode you may not be able to connect

Table 70 Maintenance > Sys OP Mode

LABEL DESCRIPTION System Operation Mode

Router Select Router Mode if your device routes traffic between a local network and another

network such as the Internet. This mode offers services such as a firewall or bandwidth

You can configure the IP address settings on your WAN port. Contact your ISP or system

administrator for more information on appropriate settings.

Access Point Select Access Point Mode if your device bridges traffic between clients on the same

•In Access Point Mode, all Ethernet ports have the same IP address.

• All ports on the rear panel of the device are LAN ports, including the port labeled WAN.

There is no WAN port.

• The DHCP server on your device is disabled.

• The IP address of the device on the local network is set to 192.168.1.2.

Apply Click Apply to save your settings.

Cancel Click Cancel to return your settings to the default (Router).Chapter 22 Maintenance

NBG6503 User’s Guide

164NBG6503 User’s Guide 165 CHAPTER 23

Troubleshooting 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• Router Access and Login• Internet Access• Resetting the Router to Its Factory Defaults• Wireless Router/AP Troubleshooting 23.1 Power, Hardware Connections, and LEDs The Router does not turn on. None of the LEDs turn on. 1 Make sure you are using the power adaptor or cord included with the Router.

2 Make sure the power adaptor or cord is connected to the Router and plugged in to an appropriate power source. Make sure the power source is turned on.3 Disconnect and re-connect the power adaptor or cord to the Router.4 If the problem continues, contact the vendor.One of the LEDs does not behave as expected. 1 Make sure you understand the normal behavior of the LED. See Section 1.5 on page 17. 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 Disconnect and re-connect the power adaptor to the Router. 5 If the problem continues, contact the vendor.Chapter 23 Troubleshooting

NBG6503 User’s Guide

23.2 Router Access and Login

I don’t know the IP address of my Router.

1 The default IP address is 192.168.1.1.

2 If you changed the IP address and have forgotten it, you might get the IP address of the Router by

looking up the IP address of the default gateway for your computer. To do this in most Windows

computers, click Start > Run, enter cmd, and then enter ipconfig. The IP address of the Default

Gateway might be the IP address of the Router (it depends on the network), so enter this IP

address in your Internet browser.Set your device to Router Mode, login (see the Quick Start Guide

for instructions) and go to the Device Information table in the Status screen. Your Router’s IP

address is available in the Device Information table.

•If the DHCP setting under LAN information is None, your device has a fixed IP address.

•If the DHCP setting under LAN information is Client, then your device receives an IP

address from a DHCP server on the network.

3 If your Router is a DHCP client, you can find your IP address from the DHCP server. This information

is only available from the DHCP server which allocates IP addresses on your network. Find this

information directly from the DHCP server or contact your system administrator for more

4 Reset your Router to change all settings back to their default. This means your current settings are

lost. See Section 23.4 on page 169 in the Troubleshooting for information on resetting your

I forgot the password.

1 The default password is 1234.

2 If this does not work, you have to reset the device to its factory defaults. See Section 23.4 on page

I cannot see or access the Login screen in the Web Configurator.

1 Make sure you are using the correct IP address.

• The default IP address is 192.168.1.1.

• If you changed the IP address (Section 12.4 on page 111), use the new IP address.

• If you changed the IP address and have forgotten it, see the troubleshooting suggestions for I

don’t know the IP address of my Router.Chapter 23 Troubleshooting

NBG6503 User’s Guide

2 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick

3 Make sure your Internet browser does not block pop-up windows and has JavaScript and Java

enabled. See Appendix A on page 173.

4 Make sure your computer is in the same subnet as the Router. (If you know that there are routers

between your computer and the Router, skip this step.)

• If there is a DHCP server on your network, make sure your computer is using a dynamic IP

address. See Appendix B on page 181.

• If there is no DHCP server on your network, make sure your computer’s IP address is in the

same subnet as the Router. See Appendix B on page 181.

5 Reset the device to its factory defaults, and try to access the Router with the default IP address.

See Section 3.3 on page 35.

6 If the problem continues, contact the network administrator or vendor, or try one of the advanced

• If your computer is connected to the WAN port or is connected wirelessly, use a computer that is

connected to a LAN/ETHERNET port.

I can see the Login screen, but I cannot log in to the Router.

1 Make sure you have entered the password correctly. The default password is 1234. This field is

case-sensitive, so make sure [Caps Lock] is not on.

2 This can happen when you fail to log out properly from your last session. Try logging in again after

3 Disconnect and re-connect the power adaptor or cord to the Router.

4 If this does not work, you have to reset the device to its factory defaults. See Section 23.4 on page

23.3 Internet Access

I cannot access the Internet.

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick

Start Guide.Chapter 23 Troubleshooting

NBG6503 User’s Guide

2 Make sure you entered your ISP account information correctly in the wizard. 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.

•Go to Network > Wireless LAN 2.4G > General > WDS and check if the Router is set to

bridge mode. Select Disable and try to connect to the Internet again.

4 Disconnect all the cables from your device, and follow the directions in the Quick Start Guide again.

5 Go to Maintenance > Sys OP Mode. Check your System Operation Mode setting.

•Select Router if your device routes traffic between a local network and another network such

•Select Access Point if your device bridges traffic between clients on the same network.

6 If the problem continues, contact your ISP.

I cannot access the Internet anymore. I had access to the Internet (with the Router), but my

Internet connection is not available anymore.

1 Check the hardware connections, and make sure the LEDs are behaving as expected. See the Quick

Start Guide and Section 1.5 on page 17.

2 Reboot the Router.

3 If the problem continues, contact your ISP.

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 on page 17.

If the Router 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 Router 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 Router.

4 If the problem continues, contact the network administrator or vendor, or try one of the advanced

Advanced Suggestions

• Check the settings for bandwidth management. If it is disabled, you might consider activating it.

If it is enabled, you might consider changing the allocations.Chapter 23 Troubleshooting

NBG6503 User’s Guide

• Check the settings for QoS. If it is disabled, you might consider activating it. If it is enabled, you

might consider raising or lowering the priority for some applications.

I set up URL keyword blocking, but I can still access a website that should be blocked.

Make sure that you select the Enable URL Keyword Blocking check box in the Content Filtering

screen. Make sure that the keywords that you type are listed in the Keyword List.

If a keyword that is listed in the Keyword List is not blocked when it is found in a URL, customize

the keyword blocking using commands. See the Customizing Keyword Blocking URL Checking

section in the Content Filter chapter.

23.4 Resetting the Router to Its Factory Defaults

If you reset the Router, you lose all of the changes you have made. The Router re-loads its default

settings, and the password resets to 1234. You have to make all of your changes again.

You will lose all of your changes when you push the RESET button.

To reset the Router,

1 Make sure the power LED is on.

2 Press the RESET button for longer than 1 second to restart/reboot the Router.

3 Press the RESET button for longer than five seconds to set the Router back to its factory-default

If the Router restarts automatically, wait for the Router to finish restarting, and log in to the Web

Configurator. The password is “1234”.

If the Router does not restart automatically, disconnect and reconnect the Router’s power. Then,

follow the directions above again.

23.5 Wireless Router/AP Troubleshooting

I cannot access the Router or ping any computer from the WLAN (wireless AP or router).

1 Make sure the wireless LAN is enabled on the RouterChapter 23 Troubleshooting

NBG6503 User’s Guide

2 Make sure the wireless adapter on the wireless station is working properly.

3 Make sure the wireless adapter installed on your computer is IEEE 802.11 compatible and supports

the same wireless standard as the Router.

4 Make sure your computer (with a wireless adapter installed) is within the transmission range of the

5 Check that both the Router and your wireless station are using the same wireless and wireless

6 Make sure traffic between the WLAN and the LAN is not blocked by the firewall on the Router.

7 Make sure you allow the Router to be remotely accessed through the WLAN interface. Check your

remote management settings.

• See the chapter on Wireless LAN in the User’s Guide for more information.

I cannot access the Web Configurator after I switched to AP mode.

192.168.1.1 is the default IP in Router mode (the default mode). In AP mode the default IP is

192.168.1.2. So, when you switch from Router mode to AP mode, you need to use the AP mode IP to

My 5G network doesn’t work.

Make sure you connect the correct antenna (5G antenna) to the 2.4G / 5G connector. See the Quick

Start Guide for details.NBG6503 User’s Guide 171

APPENDIX A 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. Structure 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.Appendix A IP Addresses and Subnetting

NBG6503 User’s Guide

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.

Figure 121 Network Number and Host ID How much of the IP address is the network number and how much is the host ID varies according

A 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”.

A 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).

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

Table 71 IP Address Network Number and Host ID Example

Host ID 00000010Appendix A IP Addresses and Subnetting

NBG6503 User’s Guide

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.

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:

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 address.

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 72 Subnet Masks

Table 73 Maximum Host Numbers

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

– 2 or 254 possible hosts.

The following figure shows the company network before subnetting.

Figure 122 Subnetting Example: Before Subnetting

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.

Table 74 Alternative Subnet Mask Notation (continued)

(DECIMAL)Appendix A IP Addresses and Subnetting

NBG6503 User’s Guide

The following figure shows the company network after subnetting. There are now two sub-

Figure 123 Subnetting Example: After Subnetting

In a 25-bit subnet the host ID has 7 bits, so each sub-network has a maximum of 2

possible hosts (a host ID of all zeroes is the subnet’s address itself, all ones is the subnet’s

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 ID

bits to give four possible combinations (00, 01, 10 and 11). The subnet mask is 26 bits

(11111111.11111111.11111111.11000000) or 255.255.255.192.

Each subnet contains 6 host ID bits, giving 2

- 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).

Table 75 Subnet 1 (continued)

NBG6503 User’s Guide

The following table shows IP address last octet values for each subnet.

The following table is a summary for subnet planning on a network with a 24-bit network number.

The following table is a summary for subnet planning on a network with a 16-bit network number.

Table 79 Eight Subnets

SUBNET SUBNET ADDRESS FIRST ADDRESS LAST ADDRESS BROADCAST ADDRESS

Table 81 16-bit Network Number Subnet Planning

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.

If the 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 (IANA) 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 Router.

Once you have decided on the network number, pick an IP address for your Router that is easy to

remember (for instance, 192.168.1.1) but make sure that no other device on your network is using

The subnet mask specifies the network number portion of an IP address. Your Router 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 Router 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:

• 10.0.0.0 — 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.

13 255.255.255.248 (/29) 8192 6

14 255.255.255.252 (/30) 16384 2

Table 81 16-bit Network Number Subnet Planning (continued)

HOST BITS SUBNET MASK NO. SUBNETS NO. HOSTS PER SUBNETAppendix A IP Addresses and Subnetting

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IP Address Conflicts

Each device on a network must have a unique IP address. Devices with duplicate IP addresses on

the same network will not be able to access the Internet or other resources. The devices may also

be unreachable through the network.

Conflicting Computer IP Addresses Example

More than one device can not use the same IP address. In the following example computer A has a

static (or fixed) IP address that is the same as the IP address that a DHCP server assigns to

computer B which is a DHCP client. Neither can access the Internet. This problem can be solved by

assigning a different static IP address to computer A or setting computer A to obtain an IP address

Figure 124 Conflicting Computer IP Addresses Example

Conflicting Router IP Addresses Example

Since a router connects different networks, it must have interfaces using different network

numbers. For example, if a router is set between a LAN and the Internet (WAN), the router’s LAN

and WAN addresses must be on different subnets. In the following example, the LAN and WAN are

on the same subnet. The LAN computers cannot access the Internet because the router cannot

route between networks.

Figure 125 Conflicting Router IP Addresses ExampleAppendix A IP Addresses and Subnetting

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Conflicting Computer and Router IP Addresses Example

More than one device can not use the same IP address. In the following example, the computer and

the router’s LAN port both use 192.168.1.1 as the IP address. The computer cannot access the

Internet. This problem can be solved by assigning a different IP address to the computer or the

Figure 126 Conflicting Computer and Router IP Addresses ExampleNBG6503 User’s Guide 181

APPENDIX B Setting Up Your Computer’s IP Address

Note: Your specific Router may not support all of the operating systems described in this

appendix. See the product specifications for more information about which

operating systems are supported.

This appendix shows you how to configure the IP settings on your computer in order for it to be

able to communicate with the other devices on your network. Windows Vista/XP/2000, Mac OS 9/ OS X, and all versions of UNIX/LINUX include the software components you need to use TCP/IP on your computer. If you manually assign IP information instead of using a dynamic IP, make sure that your network’s computers have IP addresses that place them in the same subnet.In this appendix, you can set up an IP address for: • Windows XP/NT/2000 on page 182

• Windows Vista on page 185

The following example uses the default Windows XP display theme but can also apply to Windows

3 Right-click Local Area Connection and then select Properties.

5 The Internet Protocol TCP/IP Properties window opens.

6 Select Obtain an IP address automatically if your network administrator or ISP assigns your IP

address dynamically.

Select Use the following IP Address and fill in the IP address, Subnet mask, and Default

gateway fields if you have a static IP address that was assigned to you by your network

administrator or ISP. You may also have to enter a Preferred DNS server and an Alternate DNS

server, if that information was provided.

7 Click OK to close the Internet Protocol (TCP/IP) Properties window.

8 Click OK to close the Local Area Connection Properties window.

1 Click Start > All Programs > Accessories > Command Prompt.

2 In the Command Prompt window, type "ipconfig" and then press [ENTER].

You can also go to Start > Control Panel > Network Connections, right-click a network

connection, click Status and then click the Support tab to view your IP address and connection

information.Appendix B Setting Up Your Computer’s IP Address

This section shows screens from Windows Vista Professional.

1 Click Start > Control Panel.

2 In the Control Panel, click the Network and Internet icon.

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4 Click Manage network connections.

5 Right-click Local Area Connection and then select Properties.

Note: During this procedure, click Continue whenever Windows displays a screen saying

that it needs your permission to continue.Appendix B Setting Up Your Computer’s IP Address

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7 The Internet Protocol Version 4 (TCP/IPv4) Properties window opens.

8 Select Obtain an IP address automatically if your network administrator or ISP assigns your IP

address dynamically.

Select Use the following IP Address and fill in the IP address, Subnet mask, and Default

gateway fields if you have a static IP address that was assigned to you by your network

administrator or ISP. You may also have to enter a Preferred DNS server and an Alternate DNS

server, if that information was provided.Click Advanced.

9 Click OK to close the Internet Protocol (TCP/IP) Properties window.

10 Click OK to close the Local Area Connection Properties window.

1 Click Start > All Programs > Accessories > Command Prompt.

2 In the Command Prompt window, type "ipconfig" and then press [ENTER].

You can also go to Start > Control Panel > Network Connections, right-click a network

connection, click Status and then click the Support tab to view your IP address and connection

information.Appendix B Setting Up Your Computer’s IP Address

This section shows screens from Windows 7 Enterprise.

1 Click Start > Control Panel.

2 In the Control Panel, click View network status and tasks under the Network and Internet

4 Double click Local Area Connection and then select Properties.

Note: During this procedure, click Continue whenever Windows displays a screen saying

that it needs your permission to continue.Appendix B Setting Up Your Computer’s IP Address

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6 The Internet Protocol Version 4 (TCP/IPv4) Properties window opens.

7 Select Obtain an IP address automatically if your network administrator or ISP assigns your IP

address dynamically.

Select Use the following IP Address and fill in the IP address, Subnet mask, and Default

gateway fields if you have a static IP address that was assigned to you by your network

administrator or ISP. You may also have to enter a Preferred DNS server and an Alternate DNS

server, if that information was provided. Click Advanced if you want to configure advanced

settings for IP, DNS and WINS.

8 Click OK to close the Internet Protocol (TCP/IP) Properties window.

9 Click OK to close the Local Area Connection Properties window.Appendix B Setting Up Your Computer’s IP Address

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2 In the Command Prompt window, type "ipconfig" and then press [ENTER].

3 The IP settings are displayed as follows.

Mac OS X: 10.3 and 10.4

The screens in this section are from Mac OS X 10.4 but can also apply to 10.3.

1 Click Apple > System Preferences.Appendix B Setting Up Your Computer’s IP Address

3 When the Network preferences pane opens, select Built-in Ethernet from the network

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4 For dynamically assigned settings, select Using DHCP from the Configure IPv4 list in the TCP/IP

5 For statically assigned settings, do the following:

•From the Configure IPv4 list, select Manually.

•In the IP Address field, type your IP address.

•In the Subnet Mask field, type your subnet mask.

•In the Router field, type the IP address of your device.

6 Click Apply Now and close the window.Appendix B Setting Up Your Computer’s IP Address

Check your TCP/IP properties by clicking Applications > Utilities > Network Utilities, and then

selecting the appropriate Network Interface from the Info tab.

Figure 127 Mac OS X 10.4: Network Utility

Mac OS X: 10.5 and 10.6

The screens in this section are from Mac OS X 10.5 but can also apply to 10.6.

3 When the Network preferences pane opens, select Ethernet from the list of available connection

4 From the Configure list, select Using DHCP for dynamically assigned settings.Appendix B Setting Up Your Computer’s IP Address

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5 For statically assigned settings, do the following:

•From the Configure list, select Manually.

•In the IP Address field, enter your IP address.

•In the Subnet Mask field, enter your subnet mask.

•In the Router field, enter the IP address of your Router.

6 Click Apply and close the window.Appendix B Setting Up Your Computer’s IP Address

Check your TCP/IP properties by clicking Applications > Utilities > Network Utilities, and then

selecting the appropriate Network interface from the Info tab.

Figure 128 Mac OS X 10.5: Network Utility

Linux: Ubuntu 8 (GNOME)

This section shows you how to configure your computer’s TCP/IP settings in the GNU Object Model

Environment (GNOME) using the Ubuntu 8 Linux distribution. The procedure, screens and file

locations may vary depending on your specific distribution, release version, and individual

configuration. The following screens use the default Ubuntu 8 installation.

Note: Make sure you are logged in as the root administrator.

Follow the steps below to configure your computer IP address in GNOME:

1 Click System > Administration > Network.Appendix B Setting Up Your Computer’s IP Address

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2 When the Network Settings window opens, click Unlock to open the Authenticate window. (By

default, the Unlock button is greyed out until clicked.) You cannot make changes to your

configuration unless you first enter your admin password.

3 In the Authenticate window, enter your admin account name and password then click the

Authenticate button.Appendix B Setting Up Your Computer’s IP Address

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4 In the Network Settings window, select the connection that you want to configure, then click

5 The Properties dialog box opens.

•In the Configuration list, select Automatic Configuration (DHCP) if you have a dynamic IP

•In the Configuration list, select Static IP address if you have a static IP address. Fill in the

IP address, Subnet mask, and Gateway address fields.

6 Click OK to save the changes and close the Properties dialog box and return to the Network

Settings screen.Appendix B Setting Up Your Computer’s IP Address

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7 If you know your DNS server IP address(es), click the DNS tab in the Network Settings window

and then enter the DNS server information in the fields provided.

8 Click the Close button to apply the changes.Appendix B Setting Up Your Computer’s IP Address

Check your TCP/IP properties by clicking System > Administration > Network Tools, and then

selecting the appropriate Network device from the Devices tab. The Interface Statistics

column shows data if your connection is working properly.

Figure 129 Ubuntu 8: Network Tools

Linux: openSUSE 10.3 (KDE)

This section shows you how to configure your computer’s TCP/IP settings in the K Desktop

Environment (KDE) using the openSUSE 10.3 Linux distribution. The procedure, screens and file

locations may vary depending on your specific distribution, release version, and individual

configuration. The following screens use the default openSUSE 10.3 installation.

Note: Make sure you are logged in as the root administrator.

Follow the steps below to configure your computer IP address in the KDE:Appendix B Setting Up Your Computer’s IP Address

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2 When the Run as Root - KDE su dialog opens, enter the admin password and click OK.Appendix B Setting Up Your Computer’s IP Address

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3 When the YaST Control Center window opens, select Network Devices and then click the

Figure 130 openSUSE 10.3: Network Card Setup

6 Select Dynamic Address (DHCP) if you have a dynamic IP address.

Select Statically assigned IP Address if you have a static IP address. Fill in the IP address,

Subnet mask, and Hostname fields.

7 Click Next to save the changes and close the Network Card Setup window.Appendix B Setting Up Your Computer’s IP Address

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8 If you know your DNS server IP address(es), click the Hostname/DNS tab in Network Settings

and then enter the DNS server information in the fields provided.

9 Click Finish to save your settings and close the window.

Click the KNetwork Manager icon on the Task bar to check your TCP/IP properties. From the

When the Connection Status - KNetwork Manager window opens, click the Statistics tab to

see if your connection is working properly.

Figure 132 openSUSE: Connection Status - KNetwork ManagerNBG6503 User’s Guide 209

APPENDIX C 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 133 Peer-to-Peer Communication in an Ad-hoc Network BSS A 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 isAppendix C Wireless LANs

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disabled, wireless client A and B can still access the wired network but cannot communicate with

Figure 134 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.Appendix C Wireless LANs

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An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their associated

wireless clients within the same ESS must have the same ESSID in order to communicate.

Figure 135 Infrastructure WLAN Channel

A 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 theyAppendix C Wireless LANs

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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.

Figure 136 RTS/CTS 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

When a data frame exceeds the RTS/CTS value you set, 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.

If the 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.

Note: Enabling the RTS Threshold causes redundant network overhead that could

negatively affect the throughput performance instead of providing a remedy.

Fragmentation Threshold

A Fragmentation Threshold is the maximum data fragment size that can be sent in the wireless

network before the AP will fragment the packet into smaller data frames.

A 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.Appendix C Wireless LANs

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If the 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

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 Router uses long preamble.

Note: The wireless devices MUST use the same preamble mode in order to communicate.

Wireless Security Overview

Wireless security is vital to your network to protect wireless communication between wireless

clients, access points and the wired network.

Wireless security methods available on the Router are data encryption, wireless client

authentication, restricting access by device MAC address and hiding the Router identity.

The following figure shows the relative effectiveness of these wireless security methods available on

Note: You must enable the same wireless security settings on the Router and on all

wireless clients that you want to associate with it.

Table 82 Wireless Security Levels

SECURITY LEVEL SECURITY TYPE Least

Unique SSID with Hide SSID Enabled

IEEE802.1x EAP with RADIUS Server Authentication

Wi-Fi Protected Access (WPA)

WPA2Appendix C Wireless LANs

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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

• 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

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:

Determines the identity of the users.

Determines the network services available to authenticated users once they are connected to the

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:

Sent by an access point requesting authentication.

Sent by a RADIUS server rejecting access.

Sent by a RADIUS server allowing access.

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:Appendix C Wireless LANs

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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. .

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

EAP-MD5 (Message-Digest Algorithm 5)

MD5 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

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 MD5 authentication method does not perform mutual authentication.

Finally, MD5 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.Appendix C Wireless LANs

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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)

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-MD5,

EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card), for client authentication. EAP-GTC is

implemented only by Cisco.

LEAP LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE 802.1x.

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. A 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.

Note: EAP-MD5 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 83 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 NoAppendix C Wireless LANs

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

Key differences between WPA or WPA2 and WEP are improved data encryption and user

If both 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.

WPA improves data encryption by using Temporal Key Integrity Protocol (TKIP), Message Integrity

Check (MIC) and IEEE 802.1x. WPA2 also uses TKIP when required for compatibility reasons, but

offers stronger encryption than TKIP with Advanced Encryption Standard (AES) in the Counter

mode with Cipher block chaining Message authentication code Protocol (CCMP).

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

WPA and WPA2 regularly change and rotate the encryption keys so that the same encryption key is

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-forceAppendix C Wireless LANs

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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

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

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.

Wireless Client WPA Supplicants

A 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.Appendix C Wireless LANs

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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 137 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

2 The AP checks each wireless client's password and allows it to join the network only if the password

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.Appendix C Wireless LANs

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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 138 WPA(2)-PSK Authentication

Security Parameters Summary

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.

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.

Table 84 Wireless Security Relational Matrix

AUTHENTICATION METHOD/ KEY MANAGEMENT PROTOCOL ENCRYPTIO N METHOD ENTER MANUAL KEY IEEE 802.1X Open None No Disable

Enable without Dynamic WEP Key

Open WEP No Enable with Dynamic WEP Key

Yes Enable without Dynamic WEP Key

Shared WEP No Enable with Dynamic WEP Key

Yes Enable without Dynamic WEP Key

Positioning the antennas properly increases the range and coverage area of a wireless LAN.

Antenna Characteristics

An antenna in the frequency of 2.4GHz or 5GHz 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

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

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.

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.Appendix C Wireless LANs

NBG6503 User’s Guide

For directional antennas, point the antenna in the direction of the desired coverage area.NBG6503 User’s Guide 223

APPENDIX D Common Services

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

•If the Protocol is TCP, UDP, or TCP/UDP, this is the IP port number.

•If the 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 85 Commonly Used Services

NAME PROTOCOL PORT(S) DESCRIPTION AH (IPSEC_TUNNEL)User-Defined 51 The IPSEC AH (Authentication Header) 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.

BOOTP_SERVER UDP 67 DHCP Server. CU-SEEME TCP UDP

7648 24032A popular videoconferencing solution from White Pines Software. DNS TCP/UDP 53 Domain Name Server, a service that matches web names (for example www.zyxel.com) to IP numbers. ESP (IPSEC_TUNNEL)User-Defined 50 The IPSEC ESP (Encapsulation Security 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.FTP TCP TCP

21 File Transfer Program, a program to enable fast transfer of files, including large files that may not be possible by e-mail. H.323 TCP 1720 NetMeeting uses this protocol.Appendix D Common Services

HTTPS TCP 443 HTTPS is a secured http session often used

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

IKE UDP 500 The Internet Key Exchange algorithm is

used for key distribution and

IRC TCP/UDP 6667 This is another popular Internet chat

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

NNTP TCP 119 Network News Transport Protocol is the

delivery mechanism for the USENET

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

PPTP TCP 1723 Point-to-Point Tunneling Protocol enables

secure transfer of data over public

networks. This is the control channel.

User-Defined 47 PPTP (Point-to-Point Tunneling Protocol)

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

Protocol (RTSP) is a remote control for

multimedia on the Internet.

SFTP TCP 115 Simple File Transfer Protocol.

Table 85 Commonly Used Services (continued)

NBG6503 User’s Guide

SMTP TCP 25 Simple Mail Transfer Protocol is the

message-exchange standard for the

Internet. SMTP enables you to move

messages from one e-mail server to

SNMP TCP/UDP 161 Simple Network Management Program.

SNMP-TRAPS TCP/UDP 162 Traps for use with the SNMP (RFC:1215).

SQL-NET TCP 1521 Structured Query Language is an interface

to access data on many different types of

database systems, including mainframes,

midrange systems, UNIX systems and

SSH TCP/UDP 22 Secure Shell Remote Login Program.

SYSLOG UDP 514 Syslog allows you to send system logs to a

TACACS UDP 49 Login Host Protocol used for (Terminal

Access Controller Access Control System).

TELNET TCP 23 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

TFTP UDP 69 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

VDOLIVE TCP 7000 Another videoconferencing solution.

Table 85 Commonly Used Services (continued)

APPENDIX E Legal Information

Copyright Copyright © 2013 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. Disclaimer

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. Certifications

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.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.Appendix E Legal Information

NBG6503 User’s Guide

3 Connect the equipment into an outlet on a circuit different from that to which the receiver is

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

• IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to channels 1

• 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.

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.

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.

Industry Canada Statement

This device complies with RSS-210 of the Industry Canada Rules. Operation is subject to the

following two conditions:

1 this device may not cause interference and

2 this device must accept any interference, including interference that may cause undesired

operation of the deviceAppendix E Legal Information

NBG6503 User’s Guide

This device has been designed to operate with an antenna having a maximum gain of 5dBi.

Antenna having a higher gain is strictly prohibited per regulations of Industry Canada. The required

antenna impedance is 50 ohms.

To reduce potential radio interference to other users, the antenna type and its gain should be so

chosen that the EIRP is not more than required for successful communication.

IC Radiation Exposure Statement:

This equipment complies with IC radiation exposure limits set forth for an uncontrolled

environment. This equipment should be installed and operated with minimum distance 20cm

between the radiator & your body.

Viewing Certifications

1 Go to http://www.zyxel.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

material or workmanship for a specific period (the Warranty Period) from the date of purchase. The

Warranty Period varies by region. Check with your vendor and/or the authorized ZyXEL local

distributor for details about the Warranty Period of this product. 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

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.Appendix E Legal Information

NBG6503 User’s Guide

Register your product online to receive e-mail notices of firmware upgrades and information at

Open Source Licenses

This product contains in part some free software distributed under GPL license terms and/or GPL

like licenses. Open source licenses are provided with the firmware package. You can download the

latest firmware at www.zyxel.com. To obtain the source code covered under those Licenses, please

contact support@zyxel.com.tw to get it.

Regulatory Information

The following information applies if you use the product within the European Union.

Declaration of Conformity with Regard to EU Directive 1999/5/EC (R&TTE Directive)

Compliance Information for 2.4GHz and 5GHz Wireless Products Relevant to the EU and Other

Countries Following the EU Directive 1999/5/EC (R&TTE Directive)

[Czech] ZyXEL tímto prohlašuje, že tento zařízení je ve shodě se základními požadavky a dalšími

ja nimetatud direktiivist tulenevatele teistele asjakohastele sätetele.

English Hereby, ZyXEL declares that this equipment is in compliance with the essential

requirements and other relevant provisions of Directive 1999/5/EC.

[Spanish] Por medio de la presente ZyXEL declara que el equipo cumple con los requisitos esenciales

National Restrictions

This product may be used in all EU countries (and other countries following the EU directive 1999/

5/EC) without any limitation except for the countries mentioned below:

Ce produit peut être utilisé dans tous les pays de l’UE (et dans tous les pays ayant transposés la

In the majority of the EU and other European countries, the 2, 4- and 5-GHz bands have been

made available for the use of wireless local area networks (LANs). Later in this document you will

find an overview of countries inwhich additional restrictions or requirements or both are applicable.

The requirements for any country may evolve. ZyXEL recommends that you check with the local

authorities for the latest status of their national regulations for both the 2,4- and 5-GHz wireless

The following countries have restrictions and/or requirements in addition to those given in the table

labeled “Overview of Regulatory Requirements for Wireless LANs”:.

The Belgian Institute for Postal Services and Telecommunications (BIPT) must be notified of any

outdoor wireless link having a range exceeding 300 meters. Please check http://www.bipt.be for

In Denmark, the band 5150 - 5350 MHz is also allowed for outdoor usage.

I Danmark må frekvensbåndet 5150 - 5350 også anvendes udendørs.

For 2.4 GHz, the output power is restricted to 10 mW EIRP when the product is used outdoors in the

band 2454 - 2483.5 MHz. There are no restrictions when used indoors or in other parts of the 2.4

GHz band. Check http://www.arcep.fr/ for more details.

This product meets the National Radio Interface and the requirements specified in the National

Frequency Allocation Table for Italy. Unless this wireless LAN product is operating within the

Overview of Regulatory Requirements for Wireless LANs

Frequency Band (MHz) Max Power Level

Indoor ONLY Indoor and Outdoor

Indoor (No restrictions) 2.4 – 2.4835 100mW (20dBm)

boundaries of the owner's property, its use requires a “general authorization.” Please check http://

The outdoor usage of the 2.4 GHz band requires an authorization from the Electronic

Communications Office. Please check http://www.esd.lv for more details.

2.4 GHz frekvenèu joslas izmantoðanai ârpus telpâm nepiecieðama atïauja no Elektronisko sakaru

direkcijas. Vairâk informâcijas: http://www.esd.lv.

1. Although Norway, Switzerland and Liechtenstein are not EU member states, the EU Directive

1999/5/EC has also been implemented in those countries.

2. The regulatory limits for maximum output power are specified in EIRP. The EIRP level (in dBm) of

a device can be calculated by adding the gain of the antenna used(specified in dBi) to the output

power available at the connector (specified in dBm).

List of national codes

• 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

• Connect ONLY suitable accessories to the device.

COUNTRY ISO 3166 2 LETTER CODE COUNTRY ISO 3166 2 LETTER CODE Austria AT Malta MT Belgium BE Netherlands NL Cyprus CY Poland PL Czech Republic CR Portugal PT Denmark DK Slovakia SK Estonia EE Slovenia SI Finland FI Spain ES France FR Sweden SE Germany DE United Kingdom GB Greece GR Iceland IS Hungary HU Liechtenstein LI Ireland IE Norway NO Italy IT Switzerland CH Latvia LV Bulgaria BG Lithuania LT Romania RO Luxembourg LU Turkey TRAppendix E Legal Information

NBG6503 User’s Guide

• 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

• 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.

• If the 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.

Your product is marked with this symbol, which is known as the WEEE mark. WEEE stands for Waste

Electronics and Electrical Equipment. It means that used electrical and electronic products should not be

mixed with general waste. Used electrical and electronic equipment should be treated separately.Index

NBG6503 User’s Guide 235

Address Assignment 100

AP (access point) 211

bridged APs, security 86

Certificate Authority

by keyword (in URL) 133

CTS (Clear to Send) 212

D Daylight saving 158

see also Dynamic DNS

see also Dynamic Host Configuration Protocol

NBG6503 User’s Guide236

Dynamic Host Configuration Protocol 113

dynamic WEP key exchange 216

DynDNS see also DDNS 123

firmware version 59, 68

fragmentation threshold 212

FTP. see also File Transfer Program 143

G General wireless LAN screen 86

see also Internet Group Multicast Protocol

Independent Basic Service Set

initialization vector (IV) 217

Internet Assigned Numbers Authority

Local Area Network 109

MAC address filter 84

MAC address filtering 90

using the wireless switch.

using the WPS. See WPS.

Media access control 90

see also Network Address Translation

product registration 230

shared secret key 215

Service Set IDentification 53, 86

Service Set IDentity. See SSID.Index

NBG6503 User’s Guide238

Session Initiated Protocol 143

SSID 53, 59, 69, 84, 86

Packet statistics 40

Wireless station status 41

System General Setup 155

Trigger port forwarding 120

Wireless association list 41

wireless channel 169

wireless client WPA supplicants 218

wireless LAN scheduling 96

MAC address filter 84

Wireless security 84

wireless security 169, 213

pre-authentication 218

user authentication 218

wireless client supplicant 218

with RADIUS application example 218

wireless client supplicant 218

with RADIUS application example 218

WPA2-Pre-Shared Key 217

NBG6503 User’s Guide240