USER GUIDE
Wireless-G ADSL Home Gateway

Model No: WAG200G

About This Guide

Icon Descriptions

While reading through the User Guide you may see various icons that call attention to specific items. Below is a description of these icons: NOTE: This check mark indicates that there is a note of interest and is something that you should pay special attention to while using the product.
WARNING: This exclamation point indicates that there is a caution or warning and it is something that could damage your property or product.
WEB: This globe icon indicates a noteworthy website address or e-mail address.

Online Resources

Website addresses in this document are listed without http:// in front of the address because most current web browsers do not require it. If you use an older web browser, you may have to add http:// in front of the web address. Resource Linksys Linksys International Glossary Network Security Website www.linksys.com www.linksys.com/international www.linksys.com/glossary www.linksys.com/security

Copyright and Trademarks

Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright 2007 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.

Table of Contents

Chapter 1: Product Overview 4
Front Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Back Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Chapter 2: Wireless Security Checklist
General Network Security Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Additional Security Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Chapter 3: Installation

Connection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Chapter 4: Advanced Configuration
Setup > Basic Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Setup > DDNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Setup > Advanced Routing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Wireless > Basic Wireless Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Wireless > Wireless Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Wireless > Wireless Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Wireless > Advanced Wireless Settings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Security > Firewall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Security > VPN Passthrough . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Access Restrictions > Internet Access. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Applications and Gaming > Single Port Forwarding. . . . . . . . . . . . . . . . . . . . . . . 18 Applications and Gaming > Port Range Forwarding . . . . . . . . . . . . . . . . . . . . . . . 19 Applications & Gaming > Port Range Triggering.20 Applications and Gaming > DMZ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Applications and Gaming > QoS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Administration > Management. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Administration > Reporting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Administration > Diagnostics. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Administration > Back Up & Restore. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Administration > Factory Defaults . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Administration > Firmware Upgrade. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Administration > Reboot . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Status > Gateway. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Status > Local Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Status > Wireless Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Status > DSL Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3. Enable MAC address filtering
Linksys routers and gateways give you the ability to enable Media Access Control (MAC) address filtering. The MAC address is a unique series of numbers and letters assigned to every networking device. With MAC address filtering enabled, wireless network access is provided solely for wireless devices with specific MAC addresses. For example, you can specify the MAC address of each computer in your home so that only those computers can access your wireless network.
Wireless-G Home ADSL Gateway
WEB: For more information on wireless
security, visit www.linksys.com/security

Chapter 3

Installation
NOTE: To avoid interference, you may need to place a microfilter or splitter between the phone cable and wall jack. Contact your ISP to determine if one is required. (UK residents need to connect the microfilter to the wall phone jack with ADSL service and then connect one end of the provided phone cable to the DSL port on it.) If you have more than one phone and you experience static on the line after installing the Gateway, then you need to install an additional microfilter for each phone or fax that you use. If you use ISDN, then you do not need a microfilter. 6. Connect the power adapter to the Gateways power port and the electrical outlet.
Linksys strongly recommends that you run the Setup CDROM. If you have problems running the Setup CD-ROM, use this chapter.

Connection

1. Make sure that all the devices that you are working with are powered down, including your computer(s) and the Gateway. If you have a modem connected to your network, disconnect it. The Gateway replaces your modem. 2. Connect one end of the provided Ethernet cable to your computers Ethernet adapter. Connect the other end of the Ethernet cable to one of the Ethernet ports on the back of the Gateway.

Connect the Power

Connect the Computer
7. Power on the computer that you want to use to configure the Gateway. 8. The Power, Wireless, and at least one of the numbered Ethernet (1, 2, 3, or 4) LEDs should light up. If not, make sure the Gateway is powered on and the cables are securely connected. Connection is complete. Continue to the Setup section.
3. Repeat step 2 for every computer or device that you want to connect to the Gateway via Ethernet. If you connect more than four computers to the Gateway, you also need to connect a switch to the Gateway. NOTE: If your computers Ethernet adapter is not set up, refer to the Ethernet adapters documentation for more information. 5. Connect one end of the phone cable to the DSL port on the back of the Gateway. 4. Connect the other end of the phone cable to the wall jack with ADSL service or microfilter.

For setup, configure the Gateway to access the Internet through your ADSL Internet Service Provider (ISP). Use the setup information provided by your ISP. Continue to Chapter 4: Advanced Configuration, and complete the following sections:
Setup > Basic Setup Wireless > Basic Wireless Settings Wireless > Wireless Security
After completing the setup, test the Gateway. Enter www.linksys.com/uk/registration in the web browsers Address field, and press Enter.

Connect the DSL

Installation is complete.

Chapter 4

Advanced Configuration
After setting up the Gateway with the Setup Wizard (located on the CD-ROM), the Gateway will be ready for use. However, if youd like to change its advanced settings, use the Gateways web-based utility. This chapter describes each web page of the utility and each pages key functions. You can access the utility via a web browser on a computer connected to the Gateway. The web-based utility has these main tabs: Setup, Wireless, Security, Access Restrictions, Applications & Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs. NOTE: When first installing the Gateway, you should use the Setup Wizard on the Setup CDROM. If you want to configure advanced settings, use this chapter.
NOTE: For New Zealand residents, refer to the note under RFC 2364 PPPoA.
How to Access the Web-Based Utility
To access the web-based utility, launch the web browser on your computer, and enter the Gateways default IP address, 192.168.1.1, in the Address field. Then, press Enter. A login screen appears. Use the default user name and password, admin, unless you have changed them during the Setup Wizard. (You can set a new user name and password from the Administration tabs Management screen.) Click OK to continue.

Setup > Basic Setup

Internet Setup
The Internet Setup section configures the Gateway to your Internet connection. Most of this information can be obtained through your ISP.

Internet Connection Type

Encapsulation Select the appropriate encapsulation method from the drop-down menu. Each Basic Setup screen and available features will differ depending on which encapsulation method you select. These are the available methods:

RFC 2364 PPPoA RFC 2516 PPPoE RFC 1483 Routed RFC 1483 Bridged Bridge Mode Only

Login Screen

The first screen that appears is the Basic Setup screen. This allows you to change the Gateways general settings.

VC Settings

Configure your Virtual Circuit (VC) settings in this section. Multiplexing Select LLC or VC, depending on your ISP. QoS Type Select from the drop-down menu: CBR (Continuous Bit Rate) to specify fixed bandwidth for voice

PPPoA Settings

Username and Password Enter the User Name and Password provided by your ISP. Connect on Demand: Max Idle Time You can configure the Gateway to cut the Internet connection after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Gateway to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, select Connect on Demand. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates. The default Max Idle Time is 5 minutes. Keep Alive: Redial Period If you select this option, the Gateway will periodically check your Internet connection. If you are disconnected, then the Gateway will automatically re-establish your connection. To use this option, select Keep Alive. In the Redial Period field, specify how often you want the Gateway to check the Internet connection. The default Redial Period is 30 seconds. NOTE: For instructions: New Zealand, follow these the
or data traffic; UBR (Unspecified Bit Rate) for applications that are not time-sensitive, such as e-mail; or VBR (Variable Bit Rate) for bursty traffic and bandwidth-sharing with other applications. NOTE: If the QoS Type setting is CBR, then the SCR Rate is not configurable. If the QoS Type setting is UBR, then the PCR and SCR Rate settings are not configurable. PCR Rate For the Peak Cell Rate (PCR), divide the DSL line rate by 424 to get the maximum rate the sender can send cells. Enter the rate in the field (if required by your service provider). SCR Rate The Sustain Cell Rate (SCR) sets the average cell rate that can be transmitted. The SCR value is normally smaller than the PCR value. Enter the rate in the field (if required by your service provider). Autodetect Select Enable to have the VPI/VCI settings automatically detected, or select Disable to enter the values manually. Virtual Circuit These fields consist of two items: VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier). Enter the settings provided by your ISP. DSL Modulation Select the appropriate mode: MultiMode, T1.413, G.dmt, G.lite, ADSL2, or ADSL2+. Contact your ISP if you are not sure which mode to use. Follow the instructions for your type of encapsulation.

Select Obtain an IP Address Automatically if your ISP says you are connecting through a dynamic IP address. If you are required to use a permanent (static) IP address to connect to the Internet, then select Use the following IP Address. Your ISP provides the settings needed for the following fields: Internet IP Address Enter the Gateways IP address, as seen from the Internet. Subnet Mask Enter the Gateways Subnet Mask, as seen from the Internet (including your ISP). Default Gateway Enter the IP address of the ISP server. Primary (Required) and Secondary (Optional) DNS Enter the DNS (Domain Name System) server IP address(es) provided by your ISP. At least one is required.

Network Setup

The Network Setup section changes the settings on the network connected to the Gateways Ethernet ports. Wireless setup is performed through the Wireless tab.

Router IP

The values for the Gateways Local IP Address and Subnet Mask are shown here. In most cases, keeping the default values will work.

Bridge Mode Only

If you are using your Gateway as a bridge, which makes the Gateway act like a stand-alone modem, select Bridge Mode Only. All NAT and routing settings are disabled in this mode.
Local IP Address The default value is 192.168.1.1. Subnet Mask The default value is 255.255.255.0.
Network Address Server Settings (DHCP)
The settings allow you to configure the Gateways Dynamic Host Configuration Protocol (DHCP) server function. The Gateway can be used as a DHCP server for your network. A DHCP server automatically assigns an IP address to each computer on your network. If you choose to enable the Gateways DHCP server option, make sure there is no other DHCP server on your network.
Internet Connection Type > Bridged Mode Only

Optional Settings

Some of these settings may be required by your ISP. Verify with your ISP before making any changes.
Network Address Server Settings (DHCP) Optional Settings
Host Name and Domain Name These fields allow you to supply a host and domain name for the Gateway. Some ISPs, usually cable ISPs, require these names as identification. You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, leaving these fields blank will work. MTU MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission.

Setup > DDNS > TZO

E-Mail Address Enter the E-mail Address for your account. TZO Password Enter the Password for your account. Domain Name Enter the DDNS URL assigned by the service. Internet IP Address The Internet IP address of the Gateway is displayed. Status Displays the status of the DDNS service connection. Connect To manually trigger an update, click this button. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

Static Routing

A static route is a pre-determined pathway that network information must travel to reach a specific host or network. Enter the following information to set up a new static route. Select Set Number To set up a static route between the Gateway and another network, select a number from the drop-down list. The Gateway supports up to 20 static route entries. Click Delete This Entry to delete a static route. Destination IP Address The Destination IP Address is the IP address of the remote network or host to which you want to assign a static route. Enter the IP address of the host for which you wish to create a static route. If you are building a route to an entire network, be sure that the network portion of the IP address is set to 0. Subnet Mask The Subnet Mask determines which portion of a Destination IP Address is the network portion, and which portion is the host portion. Gateway The IP address of the gateway device that allows contact between the Gateway and remote network or host. Hop Count This is the number of hops to each node until the destination is reached (16 hops maximum). Enter the appropriate Hop Count. Click Show Routing Table to view the static routes you have already set up.
Setup > Advanced Routing
The Advanced Routing screen is used to set up the Gateways advanced routing functions. It contains three sections: Operating Mode, Dynamic Routing, and Static Routing.

Routing Table

Advanced Routing

Operating Mode

NAT If this Gateway is hosting your networks connection to the Internet, keep the default, Enabled. If another
For each route, the Destination LAN IP address, Subnet Mask, Gateway, and Interface are displayed. Click Refresh to update the information. Click Close to exit this screen.
Wireless > Wireless Security
The Wireless Security screen configures the security of your wireless network(s). The supported wireless security modes are WPA2-Personal, WPA-Personal, WPA2-Mixed, and WEP. WPA (Wi-Fi Protected Access), is a security standard stronger than WEP (Wired Equivalent Privacy) encryption. WPA2 is a more advanced, more secure version of WPA. For detailed instructions on configuring wireless security on the Gateway, refer to Chapter 2: Wireless Security.
Advanced Routing > Routing Table

Wireless Security

Security Mode Select the security method for your wireless network. Proceed to the appropriate instructions. If you do not want to use wireless security, keep the default, Disabled. NOTE: If you use wireless security, remember that each device in your wireless network MUST use the same security method and settings, or else the wireless devices cannot communicate.

Wireless > Basic Wireless Settings
The basic settings for wireless networking are set on this screen. This screen allows you to choose your wireless network mode and wireless security.
WPA2-Personal (Recommended)

Wireless Network

Wireless Network Mode Select the wireless standards running on your network. If you have Wireless-G and Wireless-B devices in your network, keep the default, Mixed. If you have only Wireless-G devices, select G-Only. If you have only Wireless-B devices, select B-Only. If you do not have any wireless devices, select Disabled. Wireless Network Name (SSID) The network name is casesensitive and must not exceed 32 characters (use any of the characters on the keyboard). Linksys recommends that you change the default, to a unique name of your choice. Wireless Channel Select the channel you want to use. All devices in your wireless network must use the same channel in order to communicate. Wireless SSID Broadcast When wireless devices survey the local area for wireless networks to associate with, they will detect the wireless network name or SSID broadcast by the Gateway. If you want to broadcast the Gateways SSID, keep the default, Enable. Otherwise, select Disable. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
Security Mode > WPA2-Personal
Encryption The method is AES. Passphrase Enter a key of 8 to 63 characters. Group Key Renewal Enter how often the Gateway should change encryption keys. The default is 3600 seconds.

WPA-Personal

Security Mode > WPA-Personal
Encryption The method is TKIP. Passphrase Enter a key of 8 to 63 characters. Group Key Renewal Enter how often the Gateway should change encryption keys. The default is 3600 seconds.

Security Mode > WEP

Default Transmit Key Select which Transmit Key to use. The default is 1. WEP Encryption Select a level of WEP encryption, 64-bit or 128-bit. Passphrase Enter a Passphrase to automatically generate WEP keys. Then click Generate. NOTE: The WEP Passphrase is compatible with Linksys wireless products only. If you are use nonLinksys products, manually enter the appropriate WEP key on those devices. Key 1-4 If you did not enter a Passphrase, enter the WEP key(s) manually. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

WPA2-Mixed

This option allows clients to use EITHER WPA-Personal OR WPA2-Personal.
Security Mode > WPA2-Mixed
Encryption The method is TKIP + AES. Passphrase Enter a key of 8 to 63 characters. Group Key Renewal Enter how often the Gateway should change encryption keys. The default is 3600 seconds.
MAC 01-20 Enter the MAC addresses of the devices whose wireless access you want to block or allow. Wireless Client MAC List Click this to open the Wireless Client List screen.
Wireless > Wireless Access
Wireless access can be filtered by using the MAC addresses of the wireless devices transmitting within your networks radius.

Wireless Client List

Wireless Network Access
Allow All/Restrict Access To filter wireless users by MAC address, either permitting or blocking access, select Restrict Access. If you do not wish to filter users by MAC address, keep the default, Allow All. Prevent listed computers from accessing the wireless network Select this to block wireless access by MAC address. This setting is selected by default. Permit only listed computers to access the wireless network Select this to allow wireless access by MAC address. Edit MAC Address Access List Click this to open the MAC Address Filter List screen.
This screen lists the MAC addresses of the wireless devices. Select Enable MAC Filter for any device you want to add to the MAC Address Filter List. Then click Update Filter List. To retrieve the most up-to-date information, click Refresh. To exit this screen and return to the Wireless MAC Filter List screen, click Close. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
Wireless > Advanced Wireless Settings
The Advanced Wireless Settings screen is used to set up the Gateways advanced wireless functions. These settings should only be adjusted by an expert administrator as incorrect settings can reduce wireless performance.

MAC Address Filter List

Advanced Wireless

Wireless-G Settings

Authentication Type The default is Auto, which allows either Open System or Shared Key authentication to be used. With Open System authentication, the sender and the recipient do NOT use a WEP key for authentication. With Shared Key authentication, the sender and recipient

Firewall
Firewall Protection To use firewall protection, keep the default selection, Enable. To turn off firewall protection, select Disable.

Additional Filters

Filter Proxy Use of WAN proxy servers may compromise the Gateways security. Denying Proxy will disable access to any WAN proxy servers. Select Filter Proxy to enable proxy filtering. Deselect the feature to allow proxy access. Filter Java Applets Java is a programming language for websites. If you deny Java, you run the risk of not having access to Internet sites created using this programming language. Select Filter Java Applets to enable Java filtering. Deselect the feature to allow Java usage. Filter Cookies A cookie is data stored on your computer and used by Internet sites when you interact with them. Select Filter Cookies to filter cookies. Deselect the feature to allow cookie usage. Filter ActiveX ActiveX is a programming language for websites. If you deny ActiveX, you run the risk of not having access to Internet sites created using this programming language. Select Filter ActiveX to enable ActiveX filtering. Deselect the feature to allow ActiveX usage.

Block WAN Requests

Block Anonymous Internet Requests This feature makes it more difficult for outside users to work their way into your network. This feature is selected by default. Deselect the feature to allow anonymous Internet requests. View Log To view the logs, click View Log.
The Firewall screen is used to configure a firewall that can filter out various types of unwanted traffic on the Gateways local network.
tunneled through an IP network. To allow PPTP tunnels to pass through the Gateway, keep the default, Enable. L2TP Passthrough Layer 2 Tunneling Protocol is the method used to enable Point-to-Point sessions via the Internet on the Layer 2 level. To allow L2TP tunnels to pass through the Gateway, keep the default, Enable. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.

View Log

Access Restrictions > Internet Access
The Internet Access screen allows you to block or allow specific kinds of Internet usage and traffic, such as Internet access, designated services, and websites during specific days and times.
Type Select from the following: ALL, System Log, Access Log, Firewall Log, VPN Log, UPnP Log, Incoming Log, or Outgoing Log. Click Refresh to update the log. Click Clear to clear all the information that is displayed. Click Previous Page to view the previous page of information. Click Next Page to view the next page of information. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
Security > VPN Passthrough
The VPN Passthrough screen allows you to enable VPN tunnels using IPSec, PPPoE, PPTP, or L2TP protocols to pass through the Gateways firewall.

Internet Access

VPN Passthrough
IPSec Passthrough Internet Protocol Security (IPSec) is a suite of protocols used to implement secure exchange of packets at the IP layer. To allow IPSec tunnels to pass through the Gateway, keep the default, Enable. PPPoE Passthrough Point-to-Point over Ethernet (PPPoE) allows PPPoE to be tunneled through an IP network. To allow PPPoE tunnels to pass through the Gateway, keep the default, Enable. PPTP Passthrough Point-to-Point Tunneling Protocol (PPTP) allows the Point-to-Point Protocol (PPP) to be
Internet Access Policy Access can be managed by a policy. Use the settings on this screen to establish an access policy (after Save Settings is clicked). Selecting a policy from the drop-down menu will display that policys settings. To delete a policy, select that policys number and click Delete. To view all the policies, click Summary.

Summary

The policies are listed with the following information: No., Policy Name, Days, and Time of Day. To delete a policy, select Delete. To return to the Internet Access Policy screen, click Close.
8. To block websites using keywords, enter each keyword in a separate Website Blocking by Keyword field. 9. You can filter access to various services accessed over the Internet, such as FTP or telnet. From the Blocked Services list, select the service you want to block; the port numbers and protocol for the selected service are automatically displayed. If the service you want is not listed, then add it; enter its port numbers in the fields provided; then select its protocol: ICMP, TCP, UDP, or TCP & UDP from the drop-down menu. Then click Add. If you want to modify the service you added, select it, and them make your changes. Then click Modify. If you want to delete a service added, select it, and then click Delete. you
Status Policies are disabled by default. To enable a policy, select its number from the drop-down menu, and select Enable. To create a policy, follow steps 1-10. Repeat these steps to create additional policies, one at a time. 1. Select a number from the Internet Access Policy dropdown menu. 2. To enable this policy, select Enable. 3. Enter a Policy Name in the field provided. 4. Click Edit List of PCs to select which computers will be affected by the policy. The Internet Access PC List screen appears. You can select a computer by MAC address or IP address. You can also enter a range of IP addresses if you want this policy to affect a group of computers. After making your changes, click Save Settings to apply your changes, or click Cancel Changes to cancel your changes. Then click Close.

Administration > Reporting
The Gateway can keep logs of traffic and events for your Internet connection.

Reporting

Log To disable the Log function, keep the default, Disable. To monitor traffic between the network and the Internet, select Enable. With logging enabled, you can choose to view temporary logs. Syslog IP Address Enter the IP address of the computer that should receive logs. E-Mail Alerts To enable E-Mail Alerts, select Enable. Denial of Service Thresholds Enter the number of Denial of Service attacks that will trigger an e-mail alert. SMTP Mail Server Enter the IP address of the SMTP server. E-Mail Address for Alert Logs Enter the e-mail address that will receive alert logs. Return E-Mail address Enter the return address for the e-mail alerts. (This can be a dummy address.) View Log To view the logs, click View Log.
Universal Plug and Play (UPnP) allows Windows to automatically configure the Gateway for various Internet applications, such as gaming and videoconferencing. UPnP If you want to use UPnP, keep the default, Enable. Otherwise, select Disable.
IGMP Proxy Internet Group Membership Protocol (IGMP) is a system to improve multicasting for wireless clients. This should be set to Enable if your clients support it; otherwise, select Disable.
Ping Interval Enter the number of milliseconds between pings. The default is 1000 milliseconds. Ping Timeout Enter the number of milliseconds before the ping test will time out. The default is 5000 milliseconds. Start Test To run the test, click this button. The Ping Test screen will show if the test was successful. Click Close to return to the Diagnostics screen.

Diagnostics > Ping

Ping Result The results of the ping test are displayed. Click Save Settings to apply your changes, or click Cancel Changes to cancel your changes.
Administration > Diagnostics
The ping test allows you to check the connections of your network devices, including connection to the Internet.
Administration > Back Up & Restore
The Back Up & Restore screen allows you to back up or restore the Gateways settings using a configuration file.

Ping Test

Ping Test Parameters
The ping test checks the status of a connection. Ping Target IP Enter the IP address that you want to ping. This can be either a local (LAN) or Internet (WAN) IP address. Ping Size Enter the packet size you want to use. The default is 60 bytes. Number of Pings Enter how many times you want to ping. The default is 1.

Back Up Configuration

Back Up To save the Gateways settings in a configuration file, click Back Up and follow the on-screen instructions.

Restore Configuration

To use this option, you must have previously backed up its configuration settings. Please select a file to restore Click the Browse button and select the Gateways configuration file.

FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20 cm between the radiator and your body.

Safety Notices

Caution: To reduce the risk of fire, use only No.26 AWG or larger telecommunication line cord. Do not use this product near water, for example, in a wet basement or near a swimming pool. Avoid using this product during an electrical storm. There may be a remote risk of electric shock from lightning.
Avis dIndustrie Canada concernant lexposition aux radiofrquences
Ce matriel est conforme aux limites tablies par IC en matire dexposition aux radiofrquences dans un environnement non contrl. Ce matriel doit tre install et utilis une distance dau moins 20 cm entre lantenne et le corps de lutilisateur. Lmetteur ne doit pas tre plac prs dune autre antenne ou dun autre metteur, ou fonctionner avec une autre antenne ou un autre metteur.
Declaration of Conformity with Regard to EU Directive 1999/5/EC (R&TTE Directive)
Compliance Information for 2,4-GHz and 5-GHz Wireless Products Relevant to the EU and Other Countries Following the EU Directive 1999/5/EC (R&TTE Directive)
[Bulgarian] 1999/5/. esky [Czech]: Dansk [Danish]: Toto zazen je v souladu se zkladnmi poadavky a ostatnmi odpovdajcmi ustanovenmi Smrnice 1999/5/EC. Dette udstyr er i overensstemmelse med de vsentlige krav og andre relevante bestemmelser i Direktiv 1999/5/EF. Dieses Gert entspricht den grundlegenden Anforderungen und den weiteren entsprechenden Vorgaben der Richtlinie 1999/5/EU. See seade vastab direktiivi 1999/5/E olulistele nuetele ja teistele asjakohastele stetele. This equipment is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC. Este equipo cumple con los requisitos esenciales asi como con otras disposiciones de la Directiva 1999/5/CE. 1999/5/EC. Cet appareil est conforme aux exigences essentielles et aux autres dispositions pertinentes de la Directive 1999/5/EC. etta tki er samkvmt grunnkrfum og rum vieigandi kvum Tilskipunar 1999/5/EC. Questo apparato conforme ai requisiti essenziali ed agli altri principi sanciti dalla Direttiva 1999/5/CE. iekrta atbilst Direktvas 1999/5/EK btiskajm prasbm un citiem ar to saisttajiem noteikumiem. is renginys tenkina 1999/5/EB Direktyvos esminius reikalavimus ir kitas ios direktyvos nuostatas.

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 tre utilis dans tous les pays de lUE (et dans tous les pays ayant transposs la directive 1999/5/CE) sans aucune limitation, except pour les pays mentionns cidessous: Questo prodotto utilizzabile in tutte i paesi EU (ed in tutti gli altri paesi che seguono le direttive EU 1999/5/EC) senza nessuna limitazione, eccetto per i paesii menzionati di seguito: Das Produkt kann in allen EU Staaten ohne Einschrnkungen eingesetzt werden (sowie in anderen Staaten die der EU Direktive 1999/5/CE folgen) mit Aunahme der folgenden aufgefhrten Staaten: 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). The table labeled Overview of Regulatory Requirements for Wireless LANs provides an overview of the regulatory requirements applicable for the 2,4 and 5-GHz bands. Later in this document you will find an overview of countries in which additional restrictions or requirements or both are applicable. The requirements for any country may evolve. Linksys 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 LANs.
Overview of Regulatory Requirements for Wireless LANs
The following standards were applied during the assessment of the product against the requirements of the Directive 1999/5/EC:
Radio: EN and/or EN as applicable EMC: EN 301 489-1, EN 301 489-17 Safety: EN 60950 and either EN 50385 or EN 50371
Dynamic Frequency Selection (DFS) and Transmit Power Control (TPC) are required for operation in the 5 GHz band. DFS: The equipment meets the DFS requirements as defined in ETSI EN 301 893. This feature is required by the regulations to avoid interference with Radio Location Services (radars). TPC: For operation in the 5 GHz band, the maximum power level is 3 dB or more below the applicable limit. As such, TPC is not required.

CE Marking

For the Linksys Wireless-N, -G, -B, and/or -A products, the following CE mark, notified body number (where applicable), and class 2 identifier are added to the equipment.

Frequency Band (MHz)

2400-2483.5
Max Power Level (EIRP) (mW)

Indoor ONLY

Indoor & Outdoor
Check the CE label on the product to find out which notified body was involved during the assessment.

5150-5350 5470-5725

2,4 GHz Wireless-G

802.11g

ADSL Home Gateway

WIRELESS

User Guide

Model No.

WAG200G (EU)

Wireless-G ADSL Home Gateway

Copyright and Trademarks

Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright 2006 Cisco Systems, Inc. All rights reserved. Other brands and product names are trademarks or registered trademarks of their respective holders.

How to Use this Guide

Your Guide to the Wireless-G ADSL Home Gateway has been designed to make understanding networking with the Gateway easier than ever. Look for the following items when reading this User Guide: This checkmark means there is a Note of interest and is something you should pay special attention to while using the Gateway.
This exclamation point means there is a Caution or Warning and is something that could damage your property or the Gateway.
This question mark provides you with a reminder about something you might need to do while using the Gateway.
In addition to these symbols, there are definitions for technical terms that are presented like this: word: definition.
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like this: Figure 0-1: Sample Figure Description
Figure numbers and descriptions can also be found in the List of Figures section in the Table of Contents.

WAG200G-EU-UG-60328A BW

Table of Contents

Chapter 1: Introduction

Welcome Whats in this User Guide?
Chapter 2: Planning Your Network
The Gateways Functions IP Addresses
Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway
Ports and Reset Button on Side Panel LEDs on Side Panel
Chapter 4: Connecting the Wireless-G ADSL Home Gateway
Overview Wired Connection to a Computer Wireless Connection to a Computer
Chapter 5: Configuring the Wireless-G ADSL Home Gateway
Overview How to Access the Web-based Utility The Setup Tab The Wireless Tab The Security Tab The Access Restrictions Tab The Applications and Gaming Tab The Administration Tab The Status Tab
Appendix A: Troubleshooting
Common Problems and Solutions Frequently Asked Questions
Appendix B: Wireless Security
Security Precautions Security Threats Facing Wireless Networks Windows 98 or Me Instructions Windows 2000 or XP Instructions
Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter 63
Appendix D: Upgrading Firmware Appendix E: Glossary Appendix F: Specifications Appendix G: Warranty Information Appendix H: Regulatory Information Appendix I: Contact Information

List of Figures

Figure 2-1: Network Figure 3-1: Ports and Reset Button on Side Panel Figure 3-2: LEDs on Side Panel Figure 4-1: Connect the ADSL Line Figure 4-2: Connect a PC Figure 4-3: Connect the Power Figure 4-4: Connect the ADSL Line Figure 4-5: Connect the Power Figure 5-1: Login Screen Figure 5-2: Basic Setup Figure 5-3: RFC 1483 Bridged - Dynamic IP Figure 5-4: RFC 1483 Bridged - Static IP Figure 5-5: RFC 1483 Routed Figure 5-6: RFC 2516 PPPoE Figure 5-7: RFC 2364 PPPoA Figure 5-8: Bridged Mode Only Figure 5-9: Optional Settings Figure 5-10: DynDNS.org Figure 5-11: TZO.com Figure 5-12: Advanced Routing Figure 5-13: Routing Table Figure 5-14: Basic Wireless Settings Figure 5-15: WPA Personal Figure 5-16: WEP Figure 5-17: Wireless Network Access Figure 5-18: MAC Address Filter List Figure 5-19: Wireless Client MAC List Figure 5-20: Advanced Wireless Settings Figure 5-21: Security Figure 5-22: Firewall Log Figure 5-23: Internet Access Figure 5-24: Internet Policy Summary 28 28

IP Addresses

Whats an IP Address?
IP stands for Internet Protocol. Every device on an IP-based network, including computers, print servers, and Gateways, requires an IP address to identify its location, or address, on the network. This applies to both the Internet and LAN connections. There are two ways of assigning an IP address to your network devices. You can assign static IP addresses or use the Gateway to assign IP addresses dynamically. Figure 2-1: Network ip (internet protocol): a protocol used to send data over a network

Static IP Addresses

A static IP address is a fixed IP address that you assign manually to a computer or other device on the network. Since a static IP address remains valid until you disable it, static IP addressing ensures that the device assigned it will always have that same IP address until you change it. Static IP addresses must be unique and are commonly used with network devices such as server computers or print servers.
NOTE: Since the Gateway is a device that connects two networks, it needs two IP addressesone for the LAN, and one for the Internet. In this User Guide, youll see references to the Internet IP address and the LAN IP address. Since the Gateway uses NAT technology, the only IP address that can be seen from the Internet for your network is the Gateways Internet IP address. However, even this Internet IP address can be blocked, so that the Gateway and network seem invisible to the Internetsee the Block WAN Requests description under Security in Chapter 5: Configuring the Wireless-G ADSL Home Gateway. 4
Chapter 2: Planning Your Network The Gateways Functions
Since you use the Gateway to share your DSL Internet connection, contact your ISP to find out if they have assigned a static IP address to your account. If so, you will need that static IP address when configuring the Gateway. You can get that information from your ISP.

Dynamic IP Addresses

A dynamic IP address is automatically assigned to a device on the network, such as computers and print servers. These IP addresses are called dynamic because they are only temporarily assigned to the computer or device. After a certain time period, they expire and may change. If a computer logs onto the network (or the Internet) and its dynamic IP address has expired, the DHCP server will automatically assign it a new dynamic IP address.

INTERNET

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway LEDs on Side Panel

Overview

The installation technician from your ISP should have left the setup information for the modem with you after installing your broadband connection. If not, you can call your ISP to request that data. After you have the setup information you need for your specific type of Internet connection, you can begin installation and setup of the Gateway. If you want to use a computer with an Ethernet adapter to configure the Gateway, continue to Wired Connection to a Computer. If you want to use a computer with a wireless adapter to configure the Gateway, continue to Wireless Connection to a Computer.
Chapter 4: Connecting the Wireless-G ADSL Home Gateway Overview
Wired Connection to a Computer
1. Make sure that all of your networks hardware is powered off, including the Gateway and all computers. 2. Connect a phone cable from the Line port on the Gateways side panel to the wall jack of the ADSL line. A small device called a microfilter (not included) may be necessary between each phone and wall jack to prevent interference. Contact your ISP if you have any questions. NOTE: A small device called a microfilter (not included) may be necessary between each phone and wall jack to prevent interference. Contact your ISP if you have any questions. Figure 4-1: Connect the ADSL Line IMPORTANT: For countries that have phone jacks with RJ-11 connectors, make sure to only place the microfilters between the phone and the wall jack and not between the Gateway and the wall jack or your ADSL will not connect. For countries that do not have phone jacks with RJ-11 connectors (e.g. France, Sweden, Switzerland, United Kingdom, etc.), except for ISDN users, the microfilter has to be used between the Gateway and the wall jack, because the microfilter will have the RJ-11 connector. Annex B users (E1 and DE versions of the Gateway) must use the included special cable to connect the Gateway to the wall jack (RJ-45 to RJ-12). If you require splitters or special jacks, please contact your service provider. 3. Connect one end of an Ethernet network cable to one of the Ethernet ports (labeled 1-4) on the back of the Gateway, and the other end to an Ethernet port on a computer. Repeat this step to connect more computers, a switch, or other network devices to the Gateway. 4. Connect the power adapter to the Gateways Power port, and then plug the power adapter into a power outlet. NOTE: You should always plug the Gateways power adapter into a power strip with surge protection. The Power LED on the front panel will light up green as soon as the power adapter is connected properly. The Power LED will flash for a few seconds, and then it will be solidly lit when the self-test is complete. If the LED flashes for one minute or longer, see Appendix A: Troubleshooting. 5. Power on one of your computers that is connected to the Gateway. Go to Chapter 5: Configuring the Wireless-G ADSL Home Gateway.

Figure 5-9: Optional Settings

The DDNS Tab

The Gateway offers a Dynamic Domain Name System (DDNS) feature. DDNS lets you assign a fixed host and domain name to a dynamic Internet IP address. It is useful when you are hosting your own website, FTP server, or other server behind the Gateway. Before you can use this feature, you need to sign up for DDNS service at DynDNS.org or TZO.com.
DDNS Service. If your DDNS service is provided by DynDNS.org, then select DynDNS.org from the drop-down menu. If your DDNS service is provided by TZO.com, then select TZO.com from the drop-down menu.To disable DDNS Service, select Disabled.

Figure 5-10: DynDNS.org

DynDNS.org
User Name, Password, and Host Name. Enter the User Name, Password, and Host Name of the account you set up with DynDNS.org. Internet IP Address. The Gateways current Internet IP Address is displayed here. Because it is dynamic, it will change. Status. The status of the DDNS service connection is displayed here.

TZO.com

E-mail Address, Password, and Domain Name. Enter the E-mail Address, Password, and Domain Name of the account you set up with TZO. Internet IP Address. The Gateways current Internet IP Address is displayed here. Because it is dynamic, this will change. Status. The status of the DDNS service connection is displayed here. When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes. Figure 5-11: TZO.com

The Advanced Routing Tab

The Advanced Routing screen allows you to configure the NAT, dynamic routing, and static routing settings.

Advanced Routing

Operating Mode. In this section, you will configure the Gateways general routing settings. NAT. NAT is a security feature that is enabled by default. It enables the Gateway to translate IP addresses of your local area network to a different IP address for the Internet. To disable NAT, click the Disabled radio button. RIP. If you have multiple routers, you may want to use the Routing Information Protocol (RIP) so the routers can exchange routing information with each other. To use RIP, select the Enabled radio button. Otherwise, keep the default, Disabled. Send Default Route. To use RIP version 1 for routing, select the Enabled radio button. Otherwise, keep the default, Disabled. Interface. This setting is available when you have configured a static route and you need to choose an interface for that route. Select the interface that the Gateway will be using: LAN/Wireless or Internet. Dynamic Routing. With Dynamic Routing you can enable the Gateway to automatically adjust to physical changes in the networks layout. Using RIP, the Gateway determines the network packets route based on the fewest number of hops between the source and the destination. The RIP protocol regularly broadcasts routing information to other Gateways on the network. Transmit RIP Version. To transmit RIP messages, select the protocol you want: RIP1, RIP1-Compatible, or RIP2. If you dont want to transmit RIP messages, select None. Receive RIP Version. To receive RIP messages, select the protocol you want: RIP1 or RIP2. If you dont want to receive RIP messages, select None. Multicast or Broadcast. RIP can be sent using either methods. If you want to use multicasting, select Multicast. If you want to use Broadcast, select Broadcast. Static Routing. If the Gateway is connected to more than one network, it may be necessary to set up a static route between them. A static route is a pre-determined pathway that network information must travel to reach a specific host or network. To create a static route, change the following settings:

Block WAN Requests

Block Anonymous Internet Requests. This keeps your network from being pinged or detected and reinforces your network security by hiding your network ports, so it is more difficult for intruders to discover your network. Select Block Anonymous Internet Requests to block anonymous Internet requests or deselect it to allow anonymous Internet requests. If you want to see activity logs for your security measures, then click the View Logs button. Click the Clear button to clear the log information. Click the pageRefresh button to refresh the information. Click the Previous Page button to go to the previous page of information. Click the Next Page button to move to the next page of information. When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes. Figure 5-22: Firewall Log
The Access Restrictions Tab

The Internet Access Tab

The Internet Access screen allows you to block or allow specific kinds of Internet usage. You can set up Internet access policies for specific computers and block websites by URL address or keyword. Internet Access Policy. Access can be managed by a policy. Use the settings on this screen to establish an access policy (after the Save Settings button is clicked). Selecting a policy from the drop-down menu will display that policys settings. To delete a policy, select that policys number and click the Delete button. To view all the policies, click the Summary button. (Policies can be deleted from the Summary screen by selecting the policy or policies and clicking the Delete button. To return to the Internet Access screen, click the Close button.) Status. Policies are disabled by default. To enable a policy, select the policy number from the drop-down menu, and click the radio button beside Enable. To create an Internet Access policy: 1. Select a number from the Internet Access Policy drop-down menu. 2. To enable this policy, click the radio button beside Enable. 3. Enter a Policy Name in the field provided. Figure 5-23: Internet Access
Figure 5-24: Internet Policy Summary
Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Access Restrictions Tab
4. Click the Edit List of PCs button to select which PCs will be affected by the policy. The List of PCs screen will appear. You can select a PC by MAC Address or IP Address. You can also enter a range of IP Addresses if you want this policy to affect a group of PCs. After making your changes, click the Save Settings button to apply your changes or Cancel Changes to cancel your changes. 5. Click the appropriate option, Deny or Allow, depending on whether you want to block or allow Internet access for the PCs you listed on the List of PCs screen. 6. Decide which days and what times you want this policy to be enforced. Select the individual days during which the policy will be in effect, or select Everyday. Then enter a range of hours and minutes during which the policy will be in effect, or select 24 Hours. 7. If you want to block websites with specific URL addresses, enter each URL in a separate field next to Website Blocking by URL Address. 8. If you want to block websites using specific keywords, enter each keyword in a separate field next to Website Blocking by Keyword. 9. You can filter access to various services accessed over the Internet, such as FTP or telnet, by selecting services from the drop-down menus next to Blocked Services. Then enter the range of ports you want to filter. If the service you want to block is not listed or you want to edit a services settings, then click the Add/Edit Service button. Then the Port Services screen will appear. To add a service, enter the services name in the Service Name field. Select its protocol from the Protocol drop-down menu, and enter its range in the Port Range fields. Then click the Add button. To modify a service, select it from the list on the right. Change its name, protocol setting, or port range. Then click the Modify button. To delete a service, select it from the list on the right. Then click the Delete button. When you are finished making changes on the Port Services screen, click the Apply button to save changes. If you want to cancel your changes, click the Cancel button. To close the Port Services screen and return to the Access Restrictions screen, click the Close button. 10. Click the Save Settings button to save the policys settings. To undo the policys settings, click the Cancel Changes button.

Figure 5-31: QoS

The Administration Tab

The Management Tab

The Management screen allows you to change the Gateways access settings as well as configure the SNMP (Simple Network Management Protocol), UPnP (Universal Plug and Play), IGMP (Internet Group Multicast Protocol)-Proxy, and WLAN management features.

Gateway Access

Local Gateway Access. To ensure the Gateways security, you will be asked for your password when you access the Gateways Web-based Utility. The default username and password is admin. Gateway Userlist. Select the number of the user from the drop-down menu. Gateway Username. Enter the default username, admin. It is recommended that you change the default username to one of your choice. Gateway Password. It is recommended that you change the default password, admin, to one of your choice. Re-enter to confirm. Re-enter the Gateways new Password to confirm it. Remote Gateway Access. This feature allows you to access the Gateway from a remote location, via the Internet. Remote Management. This feature allows you to manage the Gateway from a remote location via the Internet. To enable Remote Management, click Enable. IMPORTANT: Enabling remote management allows anyone with your password to configure the Gateway from somewhere else on the Internet. Management Port. Enter the port number you will use to remotely access the Gateway. Allowed IP. Specify the IP address(es) allowed to remotely manage the Gateway. To allow all IP addresses with no restrictions, select All. To specify a single IP address, select IP address and enter the IP address in the fields provided. To specify a range of IP addresses, select IP range and enter the range of IP addresses in the fields provided. Remote Upgrade. This feature allows the Gateways firmware to be upgraded remotely by a TFTP server. To enable Remote Upgrade, click Enable. Figure 5-33: Allowed IP - IP Range Figure 5-32: Management
Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Administration Tab
SNMP is a popular network monitoring and management protocol. To enable SNMP, click Enabled. To disable SNMP, click Disabled. If enabled, then specify the IP address(es) allowed to have SNMP access. Select All to allow all IP addresses with no restrictions, IP address to specify a single IP address, or IP range to specify a range of IP addresses. Device Name. Enter the name of the Gateway. SNMP v1/v2: Get Community. Enter the password that allows read-only access to the Gateways SNMP information. Set Community. Enter the password that allows read/write access to the Gateways SNMP information. Trap Management: Trap to. Enter the IP address of the remote host computer that will receive the trap messages.
UPnP allows Windows Me and XP to automatically configure the Gateway for various Internet applications, such as gaming and videoconferencing. UPnP. To enable UPnP, click Enable. Otherwise, click Disable.

3. Refer to Problem #10: I am a PPPoE user, and I need to remove the proxy settings or the dial-up popup window. 5. I cant get my Virtual Private Network (VPN) working through the Gateway. Access the Gateways web interface by going to http://192.168.1.1 or the IP address of the Gateway, and go to the Security tab. Make sure you have IPsec passthrough and/or PPTP pass-through enabled. VPNs that use IPSec with the ESP (Encapsulation Security Payload known as protocol 50) authentication will work fine. At least one IPSec session will work through the Gateway; however, simultaneous IPSec sessions may be possible, depending on the specifics of your VPNs. VPNs that use IPSec and AH (Authentication Header known as protocol 51) are incompatible with the Gateway. AH has limitations due to occasional incompatibility with the NAT standard. Change the IP address for the Gateway to another subnet to avoid a conflict between the VPN IP address and your local IP address. For example, if your VPN server assigns an IP address 192.168.1.X (X is a number from 1 to 254) and your local LAN IP address is 192.168.1.X (X is the same number used in the VPN IP address), the Gateway will have difficulties routing information to the right location. If you change the Gateways IP address to 192.168.2.1, that should solve the problem. Change the Gateways IP address through the Setup tab of the web interface. If you assigned a static IP address to any computer or network device on the network, you need to change its IP address accordingly to 192.168.2.Y (Y being any number from 1 to 254). Note that each IP address must be unique within the network. Your VPN may require port 500/UDP packets to be passed to the computer that is connecting to the IPSec server. Refer to Problem #7, I need to set up online game hosting or use other Internet applications for details. Check the Linksys international website for more information at www.linksys.com/international. 6. I need to set up a server behind my Gateway and make it available to the public. To use a server like a web, ftp, or mail server, you need to know the respective port numbers they are using. For example, port 80 (HTTP) is used for web; port 21 (FTP) is used for FTP, and port 25 (SMTP outgoing) and port 110 (POP3 incoming) are used for the mail server. You can get more information by viewing the documentation provided with the server you installed. Follow these steps to set up port forwarding through the Gateways web-based utility. We will be setting up web, ftp, and mail servers. 1. Access the Gateways web-based utility by going to http://192.168.1.1 or the IP address of the Gateway. Go to the Applications and Gaming => Port Range Forwarding tab. 2. Enter any name you want to use for the Customized Application. 3. Enter the External Port range of the service you are using. For example, if you have a web server, you would enter the range 80 to 80. 4. Check the protocol you will be using, TCP and/or UDP. 5. Enter the IP address of the computer or network device that you want the port server to go to. For example, if the web servers Ethernet adapter IP address is 192.168.1.100, you would enter 100 in the

For Netscape 6 or higher: 1. Start Netscape Navigator, and click Edit, Preferences, Advanced, and Proxies. 2. Make sure you have Direct connection to the Internet selected on this screen. 3. Close all the windows to finish. 11. To start over, I need to set the Gateway to factory default. Hold the Reset button for 10 seconds and then release it. This will return the Internet settings, password, forwarding, and other settings on the Gateway to the factory default settings. In other words, the Gateway will revert to its original factory configuration. 12. I need to upgrade the firmware. In order to upgrade the firmware with the latest features, you need to go to the Linksys international website and download the latest firmware at www.linksys.com/international. Follow these steps: 1. Go to the Linksys international website at http://www.linksys.com/international and select your region or country. 2. Click the Products tab and select the Gateway. 3. On the Gateways webpage, click Firmware, and then download the latest firmware for the Gateway. 4. To upgrade the firmware, follow the steps in the Administration section found in Chapter 5: Configuring the Wireless-G ADSL Home Gateway. 13. The firmware upgrade failed, and/or the Power LED is flashing. The upgrade could have failed for a number of reasons. Follow these steps to upgrade the firmware and/or make the Power LED stop flashing: If the firmware upgrade failed, use the TFTP program (it was downloaded along with the firmware). Open the pdf that was downloaded along with the firmware and TFTP program, and follow the pdfs instructions. Set a static IP address on the computer; refer to Problem #1, I need to set a static IP address. Use the following IP address settings for the computer you are using: IP Address: 192.168.1.50 Subnet Mask: 255.255.255.0 Gateway: 192.168.1.1 Perform the upgrade using the TFTP program or the Gateways web-based utility through its Administration tab. 14. My DSL services PPPoE is always disconnecting. PPPoE is not actually a dedicated or always-on connection. The DSL ISP can disconnect the service after a period of inactivity, just like a normal phone dial-up connection to the Internet. There is a setup option to keep alive the connection. This may not always work, so you may need to reestablish connection periodically.
1. To connect to the Gateway, go to the web browser, and enter http://192.168.1.1 or the IP address of the Gateway. 2. Enter the username and password, if asked. (The default username and password is admin.) 3. On the Setup screen, select the option Keep Alive, and set the Redial Period option at 20 (seconds). 4. Click the Save Settings button. Click the Status tab, and click the Connect button. 5. You may see the login status display as Connecting. Press the F5 key to refresh the screen, until you see the login status display as Connected. 6. Click the Save Settings button to continue. If the connection is lost again, follow steps 1- 6 to re-establish connection. 15. I cant access my e-mail, web, or VPN, or I am getting corrupted data from the Internet. The Maximum Transmission Unit (MTU) setting may need to be adjusted. By default, the MTU is set automatically. If you are having some difficulties, perform the following steps: 1. To connect to the Gateway, go to the web browser, and enter http://192.168.1.1 or the IP address of the Gateway. 2. Enter the username and password, if asked. (The default username and password is admin.) 3. Look for the MTU option, and select Manual. In the Size field, enter 1492. 4. Click the Save Settings button to continue. If your difficulties continue, change the Size to different values. Try this list of values, one value at a time, in this order, until your problem is solved: 16. The Power LED flashes continuously. The Power LED lights up when the device is first powered up. In the meantime, the system will boot up itself and check for proper operation. After finishing the checking procedure, the LED remains steady to show that the system is working fine. If the LED continues to flash after this time, the device is not working properly. Try to flash the firmware by assigning a static IP address to the computer, and then upgrade the firmware. Try using the following settings, IP Address: 192.168.1.50 and Subnet Mask: 255.255.255.0. 17. When I enter a URL or IP address, I get a time-out error or am prompted to retry. Check if other computers work. If they do, ensure that your computers IP settings are correct (IP Address, Subnet Mask, Default Gateway, and DNS). Restart the computer that is having a problem. If the computers are configured correctly, but still not working, check the Gateway. Ensure that it is connected and powered on. Connect to it and check its settings. (If you cannot connect to it, check the LAN and power connections.)

Appendix A: Troubleshooting Frequently Asked Questions
What is Network Address Translation and what is it used for? Network Address Translation (NAT) translates multiple IP addresses on the private LAN to one public address that is sent out to the Internet. This adds a level of security since the address of a computer connected to the private LAN is never transmitted on the Internet. Furthermore, NAT allows the Gateway to be used with low cost Internet accounts when only one TCP/IP address is provided by the ISP. The user may have many private addresses behind this single address provided by the ISP. Does the Gateway support any operating system other than Windows 98SE, Windows Millennium, Windows 2000, or Windows XP? Yes, but Linksys does not, at this time, provide technical support for setup, configuration or troubleshooting of any non-Windows operating systems. Does the Gateway support ICQ send file? Yes, with the following fix: click ICQ menu -> preference -> connections tab->, and check I am behind a firewall or proxy. Then set the firewall time-out to 80 seconds in the firewall setting. The Internet user can then send a file to a user behind the Gateway. I set up an Unreal Tournament Server, but others on the LAN cannot join. What do I need to do? If you have a dedicated Unreal Tournament server running, you need to create a static IP for each of the LAN computers and forward ports 7777, 7778, 7779, 7780, 7781, and 27900 to the IP address of the server. You can also use a port forwarding range of 7777 ~ 27900. If you want to use the UT Server Admin, forward another port. (Port 8080 usually works well but is used for remote admin. You may have to disable this.) Then in the [UWeb.WebServer] section of the server.ini file, set the ListenPort to 8080 (to match the mapped port above) and ServerName to the IP assigned to the Gateway from your ISP. Can multiple gamers on the LAN get on one game server and play simultaneously with just one public IP address? It depends on which network game or what kind of game server you are using. For example, Unreal Tournament supports multi-login with one public IP. How do I get Half-Life: Team Fortress to work with the Gateway? The default client port for Half-Life is 27005. The computers on your LAN need to have +clientport 2700x added to the HL shortcut command line; the x would be 6, 7, 8, and on up. This lets multiple computers connect to the same server. One problem: Version 1.0.1.6 wont let multiple computers with the same CD key connect at the same time, even if on the same LAN (not a problem with 1.0.1.3). As far as hosting games, the HL server does not need to be in the DMZ. Just forward port 27015 to the local IP address of the server computer.

How do I reset the Gateway? Press the Reset button on the back panel for about ten seconds. This will reset the Gateway to its default settings. How do I resolve issues with signal loss? There is no way to know the exact range of your wireless network without testing. Every obstacle placed between the Gateway and a wireless computer will create signal loss. Lead glass, metal, concrete floors, water and walls will inhibit the signal and reduce range. Start with the Gateway and your wireless computer in the same room and move it away in small increments to determine the maximum range in your environment. You may also try using different channels, as this may eliminate interference affecting only one channel. I have excellent signal strength, but I cannot see my network. WEP is probably enabled on the Gateway, but not on your wireless adapter (or vice versa). Verify that the same WEP keys and levels (64 or 128) are being used on all nodes of your wireless network. How many channels/frequencies are available with the Gateway? There are eleven available channels, ranging from 1 to 11, in North America. There may be additional channels available in other regions, subject to the regulations of your region and/or country. If your questions are not addressed here, refer to the Linksys international website, www.linksys.com/international.
Linksys wants to make wireless networking as safe and easy for you as possible. The current generation of Linksys products provide several network security features, but they require specific action on your part for implementation. So, keep the following in mind whenever you are setting up or using your wireless network.

Security Precautions

The following is a complete list of security precautions to take (at least steps 1 through 5 should be followed): 1. Change the default SSID. 2. Disable SSID Broadcast. 3. Change the default password for the Administrator account. 4. Enable MAC Address Filtering. 5. Change the SSID periodically. 6. Use the highest encryption algorithm possible. Use WPA if it is available. Please note that this may reduce your network performance. 7. Change the WEP encryption keys periodically. For information on implementing these security features, refer to Chapter 6: Configuring the Wireless-G ADSL Home Gateway. NOTE: Some of these security features are available only through the network gateway, router, or access point. Refer to the gateway, router, or access points documentation for more information.
Security Threats Facing Wireless Networks
Wireless networks are easy to find. Hackers know that in order to join a wireless network, wireless networking products first listen for beacon messages. These messages can be easily decrypted and contain much of the networks information, such as the networks SSID (Service Set Identifier). Here are the steps you can take: Change the administrators password regularly. With every wireless networking device you use, keep in mind that network settings (SSID, WEP keys, etc.) are stored in its firmware. Your network administrator is the only person who can change network settings. If a hacker gets a hold of the administrators password, he, too, can change those settings. So, make it harder for a hacker to get that information. Change the administrators password regularly.

Appendix B: Wireless Security Security Precautions
SSID. There are several things to keep in mind about the SSID: 1. Disable Broadcast 2. Make it unique 3. Change it often Most wireless networking devices will give you the option of broadcasting the SSID. While this option may be more convenient, it allows anyone to log into your wireless network. This includes hackers. So, dont broadcast the SSID. Wireless networking products come with a default SSID set by the factory. (The Linksys default SSID is linksys.) Hackers know these defaults and can check these against your network. Change your SSID to something unique and not something related to your company or the networking products you use. Change your SSID regularly so that any hackers who have gained access to your wireless network will have to start from the beginning in trying to break in. MAC Addresses. Enable MAC Address filtering. MAC Address filtering will allow you to provide access to only those wireless nodes with certain MAC Addresses. This makes it harder for a hacker to access your network with a random MAC Address. WEP Encryption. Wired Equivalent Privacy (WEP) is often looked upon as a cure-all for wireless security concerns. This is overstating WEPs ability. Again, this can only provide enough security to make a hackers job more difficult. There are several ways that WEP can be maximized: 1. Use the highest level of encryption possible 2. Use Shared Key authentication 3. Change your WEP key regularly WPA. Wi-Fi Protected Access (WPA) is the newest and best available standard in Wi-Fi security. Two modes are available: Pre-Shared Key and RADIUS. Pre-Shared Key gives you a choice of two encryption methods: TKIP (Temporal Key Integrity Protocol), which utilizes a stronger encryption method and incorporates Message Integrity Code (MIC) to provide protection against hackers, and AES (Advanced Encryption System), which utilizes a symmetric 128-Bit block data encryption. RADIUS (Remote Authentication Dial-In User Service) utilizes a RADIUS server for authentication and the use of dynamic TKIP, AES, or WEP. IMPORTANT: Always remember that each device in your wireless network MUST use the same encryption method and encryption key or your wireless network will not function properly.
Appendix B: Wireless Security Security Threats Facing Wireless Networks
WPA Pre-Shared Key. If you do not have a RADIUS server, Select the type of algorithm, TKIP or AES, enter a password in the Pre-Shared key field of 8-64 characters, and enter a Group Key Renewal period time between 0 and 99,999 seconds, which instructs the Gateway or other device how often it should change the encryption keys. WPA RADIUS. WPA used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Gateway or other device.) First, select the type of WPA algorithm, TKIP or AES. Enter the RADIUS servers IP Address and port number, along with a key shared between the device and the server. Last, enter a Group Key Renewal period, which instructs the device how often it should change the encryption keys. RADIUS. WEP used in coordination with a RADIUS server. (This should only be used when a RADIUS server is connected to the Gateway or other device.) First, enter the RADIUS servers IP Address and port number, along with a key shared between the device and the server. Then, select a WEP key and a level of WEP encryption, and either generate a WEP key through the Passphrase or enter the WEP key manually. Implementing encryption may have a negative impact on your networks performance, but if you are transmitting sensitive data over your network, encryption should be used. These security recommendations should help keep your mind at ease while you are enjoying the most flexible and convenient technology Linksys has to offer.

Ping (Packet INternet Groper) - An Internet utility used to determine whether a particular IP address is online. POP3 (Post Office Protocol 3) - A standard mail server commonly used on the Internet. Port - The connection point on a computer or networking device used for plugging in cables or adapters. Power over Ethernet (PoE) - A technology enabling an Ethernet network cable to deliver both data and power. PPPoE (Point to Point Protocol over Ethernet) - A type of broadband connection that provides authentication (username and password) in addition to data transport. PPTP (Point-to-Point Tunneling Protocol) - A VPN protocol that allows the Point to Point Protocol (PPP) to be tunneled through an IP network. This protocol is also used as a type of broadband connection in Europe. Preamble - Part of the wireless signal that synchronizes network traffic. RADIUS (Remote Authentication Dial-In User Service) - A protocol that uses an authentication server to control network access. RJ-45 (Registered Jack-45) - An Ethernet connector that holds up to eight wires. Roaming - The ability to take a wireless device from one access point's range to another without losing the connection. Router - A networking device that connects multiple networks together. RTS (Request To Send) - A networking method of coordinating large packets through the RTS Threshold setting. Server - Any computer whose function in a network is to provide user access to files, printing, communications, and other services. SMTP (Simple Mail Transfer Protocol) - The standard e-mail protocol on the Internet. SNMP (Simple Network Management Protocol) - A widely used network monitoring and control protocol. Software - Instructions for the computer. A series of instructions that performs a particular task is called a program. SOHO (Small Office/Home Office) - Market segment of professionals who work at home or in small offices. SPI (Stateful Packet Inspection) Firewall - A technology that inspects incoming packets of information before allowing them to enter the network.
Spread Spectrum - Wideband radio frequency technique used for more reliable and secure data transmission. SSID (Service Set IDentifier) - Your wireless network's name. Static IP Address - A fixed address assigned to a computer or device that is connected to a network. Static Routing - Forwarding data in a network via a fixed path. Subnet Mask - An address code that determines the size of the network. Switch - 1. A data switch that connects computing devices to host computers, allowing a large number of devices to share a limited number of ports. 2. A device for making, breaking, or changing the connections in an electrical circuit. TCP (Transmission Control Protocol) - A network protocol for transmitting data that requires acknowledgement from the recipient of data sent. TCP/IP (Transmission Control Protocol/Internet Protocol) - A set of instructions PCs use to communicate over a network. Telnet - A user command and TCP/IP protocol used for accessing remote PCs. TFTP (Trivial File Transfer Protocol) - A version of the TCP/IP FTP protocol that has no directory or password capability. Throughput - The amount of data moved successfully from one node to another in a given time period. TKIP (Temporal Key Integrity Protocol) - a wireless encryption protocol that provides dynamic encryption keys for each packet transmitted. Topology - The physical layout of a network. TX Rate - Transmission Rate. UDP (User Datagram Protocol) - A network protocol for transmitting data that does not require acknowledgement from the recipient of the data that is sent. Upgrade - To replace existing software or firmware with a newer version. Upload - To transmit a file over a network. URL (Uniform Resource Locator) - The address of a file located on the Internet.

VPN (Virtual Private Network) - A security measure to protect data as it leaves one network and goes to another over the Internet. WAN (Wide Area Network)- The Internet. WEP (Wired Equivalent Privacy) - A method of encrypting network data transmitted on a wireless network for greater security. WINIPCFG - A Windows 98 and Me utility that displays the IP address for a particular networking device. WLAN (Wireless Local Area Network) - A group of computers and associated devices that communicate with each other wirelessly. WPA (Wi-Fi Protected Access) - a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.
Appendix F: Specifications
Model Number Standards Ports Button Cabling Type LEDs Transmit Power Channels UPnP able/cert Security Features WAG200G IEEE 802.11g, IEEE 802.11b, IEEE 802.3, IEEE 802.3u, G.992.1 (G.dmt), G.992.2 (G.lite), G.992.3, G.992.5, T1.413i2, Annex-B (E1), UR-2 (DE) Power, ADSL, Ethernet (1-4) One Reset Button CAT 5 UTP Power, Wireless, Ethernet (1-4), DSL, Internet 18 dBm 13 (most of Europe) Able Password protected configuration for web access PAP and CHAP authentication Denial of Service (DoS) Prevention URL filtering, and keyword, Java, ActiveX, Proxy, Cookie blocking ToD filter (Blocks Access by Time) VPN Passthrough for IPSec, PPTP, and L2TP Protocols 128, 64 bits WEP with Passphrase WEP key generation SSID Broadcast Disable Access restriction by MAC and IP addresses 64, 128

WEP Key Bits

Dimensions Unit Weight Power Certifications Operating Temp. Storage Temp. Operating Humidity Storage Humidity
140 mm x 140 mm x 27 mm (5,51" x 5,51" x 1,06") 0,3 kg (0,6 lb.) 12VDC 1A CE 0~40C (32~104F) -20~70C (-4~158F) 10~85% Non-Condensing 5~90% Non-Condensing
Appendix G: Warranty Information
Linksys warrants to You that, for a period of three years (the Warranty Period), your Linksys Product will be substantially free of defects in materials and workmanship under normal use. Your exclusive remedy and Linksys' entire liability under this warranty will be for Linksys at its option to repair or replace the Product or refund Your purchase price less any rebates. This limited warranty extends only to the original purchaser. If the Product proves defective during the Warranty Period call Linksys Technical Support in order to obtain a Return Authorization Number, if applicable. BE SURE TO HAVE YOUR PROOF OF PURCHASE ON HAND WHEN CALLING. If You are requested to return the Product, mark the Return Authorization Number clearly on the outside of the package and include a copy of your original proof of purchase. RETURN REQUESTS CANNOT BE PROCESSED WITHOUT PROOF OF PURCHASE. You are responsible for shipping defective Products to Linksys. Linksys pays for UPS Ground shipping from Linksys back to You only. Customers located outside of the United States of America and Canada are responsible for all shipping and handling charges. ALL IMPLIED WARRANTIES AND CONDITIONS OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE ARE LIMITED TO THE DURATION OF THE WARRANTY PERIOD. ALL OTHER EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF NON-INFRINGEMENT, ARE DISCLAIMED. Some jurisdictions do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to You. This warranty gives You specific legal rights, and You may also have other rights which vary by jurisdiction. This warranty does not apply if the Product (a) has been altered, except by Linksys, (b) has not been installed, operated, repaired, or maintained in accordance with instructions supplied by Linksys, or (c) has been subjected to abnormal physical or electrical stress, misuse, negligence, or accident. In addition, due to the continual development of new techniques for intruding upon and attacking networks, Linksys does not warrant that the Product will be free of vulnerability to intrusion or attack. TO THE EXTENT NOT PROHIBITED BY LAW, IN NO EVENT WILL LINKSYS BE LIABLE FOR ANY LOST DATA, REVENUE OR PROFIT, OR FOR SPECIAL, INDIRECT, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, REGARDLESS OF THE THEORY OF LIABILITY (INCLUDING NEGLIGENCE), ARISING OUT OF OR RELATED TO THE USE OF OR INABILITY TO USE THE PRODUCT (INCLUDING ANY SOFTWARE), EVEN IF LINKSYS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. IN NO EVENT WILL LINKSYS LIABILITY EXCEED THE AMOUNT PAID BY YOU FOR THE PRODUCT. The foregoing limitations will apply even if any warranty or remedy provided under this Agreement fails of its essential purpose. Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to You. This Warranty is valid and may be processed only in the country of purchase. Please direct all inquiries to: Linksys, P.O. Box 18558, Irvine, CA 92623.