ZYXEL ZYWALL USG 100 - Firewall

ZYWALL USG 100 - Firewall ZYXEL - Free user manual and instructions

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Product Type Hardware firewall with unified security gateway
Brand ZYXEL
Model ZyWALL USG 100
Dimensions (W x D x H) Approximately 44 x 26 x 4.4 cm (19-inch 1U rack compatible)
Weight Approximately 4 kg
Power Supply 12 VDC power adapter, power connector on rear panel
LAN/WAN Ports 7 RJ-45 ports (P1-P7): P1,P2 WAN; P3,P4,P5 LAN; P6 WLAN; P7 DMZ
Additional Ports 1 AUX RS-232 port, 1 CONSOLE RS-232 port, 1 USB port, 1 PCMCIA expansion card slot
Main Functions Firewall, VPN, IDP, content filtering, DHCP server, routing, WAN load balancing
Default IP Address 192.168.1.1 (LAN management interface)
Default Credentials User: admin / Password: 1234
Configuration HTTPS web interface, built-in setup wizard, command line management via console
Maintenance and Cleaning Unplug the device before cleaning; use a soft dry cloth; do not use abrasive or liquid products
Security Change the default password on first login; RESET button to restore factory defaults
Spare Parts and Repairability No spare parts provided; contact your dealer for any hardware issues
General Information Manual available in multiple languages on the website; operating temperature: 0-45°C; humidity: 10-90% non-condensing

Frequently Asked Questions - ZYWALL USG 100 ZYXEL

How to set up the ZyWALL USG 100 for the first time?
Connect a computer to port P4 with an Ethernet cable, then open a browser to http://192.168.1.1. Use the username admin and password 1234. Follow the setup wizard to configure the Internet connection.
What are the default settings of the device?
LAN IP address: 192.168.1.1. DHCP server enabled on LAN ports (P4,P5). Admin password: 1234. WAN ports in DHCP client mode.
How to reset a forgotten password?
Press the RESET button on the front for about 5 seconds until the PWR LED blinks. Release: the device returns to factory defaults (password 1234).
What is the function of each port?
P1,P2: WAN; P3,P4,P5: LAN; P6: WLAN; P7: DMZ. The AUX port allows a backup modem, CONSOLE for local management, USB for a 3G card, and the PCMCIA slot for a wireless card.
How to access the management interface if I forgot the IP address?
Connect a console cable to the CONSOLE port and use a terminal emulator (VT100, 115200 bps) to connect. Type commands to display the IP configuration.
The power LED does not light up, what should I do?
Check that the power cord is properly connected to the ZyWALL and to a working power outlet. If the problem persists, contact your dealer for hardware support.
How to configure two WAN connections?
During the setup wizard, choose the TWO ISP option. Connect each Internet line to ports P1 (wan1) and P2 (wan2). The wizard will guide you to configure each connection.
Can I use the USB port for a 3G connection?
Yes, the USB port supports a 3G card (like Huawei E220) for backup Internet access. Insert the card and configure it via the web interface.
How to update the firmware?
Log in to the web interface, go to Maintenance > Firmware Upgrade. Download the file from the Zyxel website and follow the on-screen instructions. Do not cut power during the update.
Where to find the product certification list?
Go to www.zyxel.com, select your model on the homepage, then go to the certifications tab to view the documents.

User questions about ZYWALL USG 100 ZYXEL

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Can two Ethernet WAN connections be configured on the ZYXEL ZYWALL USG 100?
Frequently Asked Questions - 01/06/2026
Response Notice-Facile

Yes, the ZYXEL ZYWALL USG 100 has two dedicated Ethernet WAN ports allowing you to configure two separate Internet connections in parallel on ports P1 and P2.

By default, these two WAN ports are configured as DHCP clients and operate independently to accommodate two Internet lines from different Internet Service Providers (ISPs). You can use them to:

  • Connect two Internet links from distinct providers for redundancy
  • Set up automatic failover: if the first line goes down, traffic automatically switches to the second
  • Configure load balancing to distribute traffic between the two connections

Practical setup: Use Category 5e (or higher) 8-wire Ethernet cables to connect each WAN port to your Internet connection equipment (modems, routers). The firewall installation wizard offers an option “INSTALLATION CONFIGURATION, TWO ISPs” that guides you step by step through the setup of each WAN connection. After connecting the cables, access the firewall's web interface (192.168.1.1) and launch this wizard to enter the specific settings for your two ISPs (encapsulation type, DNS, etc.).

By default, no further configuration is necessary: the ZYWALL USG 100 automatically recognizes the two WAN ports and activates them as soon as they receive an IP address via DHCP.

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Download the instructions for your Firewall in PDF format for free! Find your manual ZYWALL USG 100 - ZYXEL and take your electronic device back in hand. On this page are published all the documents necessary for the use of your device. ZYWALL USG 100 by ZYXEL.

USER MANUAL ZYWALL USG 100 ZYXEL

ZyWALL USG 100/200 Series

Unified Security Gateway

Quick Start Guide

Version 2.10

3/2008

Edition 1

DEFAULT LOGIN

LAN PortP4
LAN IP Addresshttp://192.168.1.1
User Nameadmin
Password1234

CONTENTS

ENGLISH2
DEUTSCH9
ESPAÑOL16
FRANÇAIS23
ITALIANO30
РУССКИЙ37
简体中文45
繁體中文52

1 Checking the Package Contents

Your package should include one of each of the following:

- ZyWALL

- RJ-45 Ethernet cable

- Compact disk (CD)

- Power cord

• RS-232 console Y-cable

- Rack-mounting kit

- Printed Quick Start Guide

2 Rack-mounted Installation

Mount the ZyWALL in a 19-inch rack or place it on a sturdy, flat surface.

Note: Leave 10 cm of clearance at the sides and 20 cm in the rear.

1 Align one bracket with the holes on one side of the ZyWALL and secure it with the included bracket screws. Similarly, attach the other bracket.

ZYXEL 12WALL USG 300

2 After attaching both mounting brackets, position the ZyWALL in the rack by lining up the holes in the brackets with the appropriate holes on the rack. Secure the ZyWALL to the rack with the rack-mounting screws.

ZYXEL ZYWALL USG 100 - Rack-mounted Installation - 2

natural_image Technical line drawing of a Zyxel networking device mounted on server racks (no text or symbols visible)

3 Connecting the Hardware

ZYXEL ZYWALL USG 100 - Connecting the Hardware - 1

flowchart
graph TD
    A["ZyXEL"] -->|PWR SYS AUX CARD RESET| B["USB"]
    B --> C["WAN1 P1 WAN2 OPT P3 LAN/WLAN/DMZ P4 P5 P6 P7"]
    B --> D["Internet"]
    B --> E["Computer"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333

1 It is recommended that you configure the ZyWALL before using it to protect your network. Use an Ethernet cable to connect a computer to port P4.
2 Use another Ethernet cable(s) to connect port 2 and/or port 3 to an Ethernet jack with Internet access.

AUX CONSOLI EXTENSION CARD SLOT POWER 12VDC

3 Use the included power adaptor to connect the power socket (on the rear panel) to a power outlet.
4 Look at the front panel. The PWR light turns on. The SYS light blinks during system testing and initialization and then stays on when the system is ready.

4 Web Login

1 Launch your web browser and go to http://192.168.1.1 (the ZyWALL automatically redirects you to https://192.168.1.1).

File Edit View Favorites Tools Help Back Search Favorit Address http://192.168.1.1

2 Click Yes to proceed if you get a security alert or certificate screen.

Security Alert Information you exchange with this site cannot be viewed or changed by others. However, there is a problem with the site's security certificate. The security certificate was issued by a company you have not chosen to trust. View the certificate to determine whether you want to trust the certifying authority. The security certificate date is valid. The name on the security certificate is invalid or does not match the name of the site Do you want to proceed? Yes No View Certificate

3 Enter admin as the user name and 1234 as the password. Click Login.

User Name: Password: One-Time Password: (Optional) (max. 31 alphanumeric, printable characters and no spaces) Log into SSL VPN Note: 1. Turn on Javascript and Cookie setting in your web browser. 2. Turn off Popup Window Blocking in your web browser. 3. Turn on Java Runtime Environment (JRE) in your web browser. Login Reset

4 It is strongly recommended that you change the password. Type and retype a new password, and click Apply.

Update Admin Info As a security precaution, it is highly recommended that you change the admin password. New Password: **** Retype to Confirm: **** ( max. 31 alphanumeric, printable characters and no spaces ) Apply Ignore

5 Installation Setup Wizard

The Status screen opens. Click the Wizard icon 📁 in the upper right corner.

ZyXEL Status Refresh Interval: None Device Information System Status System Name: zywall-usg-200 Uptime: 03:12:04 Current Date/Time: 2007-11-02 08:3 Model Name: ZyWALL USG 200 Serial Number: Z34131340 80-009-011001AA VPN Status:

Use an installation setup wizard to connect to the Internet and register the ZyWALL and/or activate trial services, like IDP and content filter.

Note: Use the installation wizard only for initial configuration starting from the default configuration.

Changes you make in the installation wizard may not be applied if you have already changed the ZyWALL's configuration.

  • INSTALLATION SETUP, ONE ISP sets up a single Internet connection for wan1.
  • INSTALLATION SETUP, TWO ISP sets up Internet connections for wan1 and wan2.

INSTALLATION SETUP, ONE ISP (helps user quickly configure the ZyWALL USG 200 to secure Internet connection) INSTALLATION SETUP, TWO ISP (helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

The wizard screens vary depending on the encapsulation type you use. Refer to information provided by your ISP and the web help screens to know what to enter in each field. You can leave fields blank if you don't have that information.

Internet Access ISP Parameters Encapsulation: Ethernet WAN IP Address Assignments WAN Interface: wan1 Zone: WAN IP Address Auto Assignment: < Back Next >

6 Default Settings and Port Details

The ZyWALL is configured for the following network topology by default. (ZyWALL USG 200)

ZYXEL ZYWALL USG 100 - Default Settings and Port Details - 1

flowchart
graph TD
    A["ZyXEL\nZyWALL USG 200\nUNIFIED SECURITY GATWAY"] -->|P1 a.b.c.d| B["Internet"]
    A -->|P2 e.f.g.h| C["LAN1"]
    A -->|P3| D["DMZ"]
    A -->|P4, P5 192.168.1.1| E["LAN/WLAN/DMZ"]
    A -->|P6 10.59.0.1| F["WLAN"]
    A -->|P7 192.168.3.1| G["LAN1"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#ffc,stroke:#333
    style F fill:#cff,stroke:#333
    style G fill:#ffc,stroke:#333

ZyWALL USG 200

PortInterfaceZoneIP Address and DHCP SettingsSuggested Use With Default Settings
P1, P2wan1, wan2WANDHCP clientsConnections to the Internet
P3optOPTNone, DHCP server disabledThird WAN, additional LAN, WLAN, or DMZ port or a separate network.
P4, P5lan1LAN1192.168.1.1, DHCP server enabledProtected LAN
P6ext-wlanWLAN10.59.0.1, DHCP server enabledWireless access points
P7dmzDMZ192.168.3.1, DHCP server disabledPublic servers (such as web, e-mail and FTP)
AUXauxNoneNoneAuxiliary modem
CONSOLEn/aNoneNoneLocal management

ZyWALL USG 100

PortInterfaceZoneIP Address and DHCP SettingsSuggested Use With Default Settings
P1, P2wan1, wan2WANDHCP clientsConnections to the Internet
P3, P4, P5lan1LAN1192.168.1.1, DHCP server enabledProtected LAN.
P6ext-wlanWLAN10.59.0.1, DHCP server enabledWireless access points
P7dmzDMZ192.168.3.1, DHCP server enabledPublic servers (such as web, e-mail and FTP)
AUXauxNoneNoneAuxiliary modem
CONSOLEn/aNoneNoneLocal management
LabelTypeDescription
USBUSBConnect a (USB) 3G wireless card to access the Internet through a 3G network. At the time of writing, you can use the Huawei E220.
P1~P7RJ-45Use 8-wire Category 5e or above Ethernet cables to connect routers, switches, computers, routers, access points, and so on.
AUXRS-232Use an RS-232 console cable to connect dial backup/dial-in modem.
CONSOLERS-232Use an RS-232 console cable to connect a local computer for command-based management.
EXTENSION CARD SLOTPCMCIAInsert a wireless LAN card to use the wireless LAN feature. At the time of writing, you can use ZyXEL's G-170S wireless card. You can optionally insert a 3G wireless card to access the Internet wirelessly via a 3G network. At the time of writing, you can use a Sierra Wireless AC850 or AC860 3G wireless card.

7 Troubleshooting

ProblemCorrective Action
None of the LEDs turn on.Make sure that you have the power cord connected to the ZyWALL and plugged in to an appropriate power source. Make sure you have the ZyWALL turned on. Check all cable connections.
If the LEDs still do not turn on, you may have a hardware problem. In this case, you should contact your local vendor.
Cannot access the ZyWALL from the LAN.Check the cable connection between the ZyWALL and your computer or switch. Refer to section 3 for details.
Ping the ZyWALL from a LAN computer. Make sure your computer's Ethernet card is installed and functioning properly. Also make sure that its IP address is in the same subnet as the ZyWALL's.In the computer, click Start, (All) Programs, Accessories and then Command Prompt. In the Command Prompt window, type "ping" followed by the ZyWALL's LAN IP address (192.168.1.1 is the default) and then press [ENTER]. The ZyWALL should reply.
If you've forgotten the ZyWALL's password, use the RESET button. Press the button in for about 5 seconds (or until the PWR LED starts to blink), then release it. It returns the ZyWALL to the factory defaults (password is 1234, LAN IP address 192.168.1.1 etc.; see your User's Guide for details).
If you've forgotten the ZyWALL's IP address, you can use the commands through the console port to check it. Connect your computer to the CONSOLE port using a console cable. Your computer should have a terminal emulation communications program (such as HyperTerminal) set to VT100 terminal emulation, no parity, 8 data bits, 1 stop bit, no flow control and 115200 bps port speed.
Cannot access the Internet.Check the ZyWALL's connection to the Ethernet jack with Internet access. Make sure the Internet gateway device (such as a DSL modem) is working properly.
Check the WAN port's status in the Status screen. Use the installation setup wizard again and make sure that you enter the correct settings.

8 Procedure to View a Product's Certification(s)

1 Go to www.zyxel.com.
2 Select your product from the drop-down list box on the ZyXEL home page to go to that product's page.
3 Select the certification you wish to view from this page.

natural_image Technical line drawing of a server rack unit with Zyxel internal components and mounting brackets (no text or symbols)

5 Installationsassistent

Internet Access ISP Parameters Encapsulation: Ethernet WAN IP Address Assignments WAN Interface: wan1 Zone: WAN IP Address Auto Assignment: < Back Next >

natural_image Technical line drawing of a Zyxel industrial server rack with mounting brackets and ports (no text or symbols on the device itself)

3 Conectar el hardware

ZYXEL ZYWALL USG 100 - Conectar el hardware - 1

flowchart
graph TD
    A["ZyXEL"] -->|PWR SYS AUX CARD RESET| B["USB"]
    B --> C["WAN1 P1 WAN2 OPT P3 LAN/WLAN/DMZ P4 P5 P6 P7"]
    B --> D["Internet"]
    B --> E["Computer"]
    style A fill:#f9f,stroke:#333
    style B fill:#ccf,stroke:#333
    style C fill:#cfc,stroke:#333
    style D fill:#fcc,stroke:#333
    style E fill:#cff,stroke:#333

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

ZYXEL ZYWALL USG 100 - Conectar el hardware - 2

INSTALLATION SETUP, TWO ISP

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

Internet Access ISP Parameters Encapsulation: Ethernet WAN IP Address Assignments WAN Interface: wan1 Zone: WAN IP Address Assignment: Auto < Back Next >

natural_image Technical line drawing of a Zyxel networking device with labeled ports and connectors (no readable text or symbols beyond branding)

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

ZYXEL ZYWALL USG 100 - INSTALLATION SETUP, TWO ISP - 2

INSTALLATION SETUP, TWO ISP

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

Internet Access ISP Parameters Encapsulation: Ethernet WAN IP Address Assignments WAN Interface: wan1 Zone: WAN IP Address Auto Assignment: < Back Next >

natural_image Technical line drawing of a Zyxel industrial server rack with mounting brackets and ports (no text or symbols on the device itself)

Internet Access ISP Parameters Encapsulation: Ethernet WAN IP Address Assignments WAN Interface: wan1 Zone: WAN IP Address Assignment: Auto < Back Next >

natural_image Technical line drawing of a Zyxel ISG 200 networking device with labeled ports and mounting brackets (no readable text beyond labels)

3 Подключение

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

ZYXEL ZYWALL USG 100 - Подключение - 1

INSTALLATION SETUP, TWO ISP

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

natural_image Technical line drawing of a Z pixel network device mounted on server racks (no text or symbols visible)

3 连接硬件

natural_image Technical line drawing of a Z pixel network device mounted on server racks (no text or symbols visible)

3 連接硬體

ZYXEL ZYWALL USG 100 - 連接硬體 - 1

flowchart
graph TD
    A["ZyXEL"] -->|PWR SYS AUX CARD RESET| B["UNIFIED SECURITY GATEWAY"]
    B --> C["USB 1"]
    B --> D["USB 2"]
    C --> E["WAN1 P1"]
    C --> F["WAN2 P2"]
    D --> G["OPT P3"]
    D --> H["OPT P4"]
    D --> I["OPT P5"]
    D --> J["OPT P6"]
    D --> K["OPT P7"]
    L["Internet"] --> M["Switch ②"]
    M --> N["Switch ①"]
    style L fill:#f9f,stroke:#333
    style M fill:#ccf,stroke:#333

5 安裝設定精靈

打開狀態畫面。點擊右上角的精靈圖示。

ZyXEL Status Refresh Interval: None Device Information System Status System Name: zywall-usg-200 Uptime: 03:12:04 Current Date/Time: 2007-11-02 08:3 Model Name: ZyWALL USG 200 Serial Number: Z34131340 80-009-011001AA VPN Status:

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

ZYXEL ZYWALL USG 100 - 安裝設定精靈 - 2

INSTALLATION SETUP, TWO ISP

(helps user quickly configure the ZyWALL USG 200 to secure Internet connection)

6 預設值及連接埠的細節

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Product information

Brand : ZYXEL

Model : ZYWALL USG 100

Category : Firewall