Cisco Systems WRT54G manual What is Network Address Translation and what is it used for?

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Wireless-G Broadband Router

Does the Internet connection of the Router support 100Mbps Ethernet?

The Router’s current hardware design supports up to 100Mbps Ethernet on its Internet port; however, the Internet connection speed will vary depending on the speed of your broadband connection. The Router also supports 100Mbps over the auto-sensing Fast Ethernet 10/100 switch on the LAN side of the Router.

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 PC connected to the private LAN is never transmitted on the Internet. Furthermore, NAT allows the Router to be used with low cost Internet accounts, such as DSL or cable modems, 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 Router support any operating system other than Windows 98, 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 Router 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 Router.

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 Router 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 Router?

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 won’t let multiple computers with the same CD key connect at

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents Jameco Part Number 487058UsersGuide 54Mbps GHz Wireless- G Word definition Copyright and TrademarksTable of Contents Appendix B Wireless Security Appendix ATroubleshootingBroadband Router’s Back Panel List of Figures18 Wireless Tab Advanced Wireless Settings Figure B-12 WEP Welcome IntroductionWhat’s in this Guide? Wireless-G Broadband Router Roaming Network TopologyNetwork Layout Back Panel Getting to Know the Wireless-G Broadband RouterDMZ Front PanelHardware Installation Connecting the Wireless-G Broadband RouterConnecting the Wireless-G Broadband Router Wireless-G Broadband Router Configuring Windows 98 and Millennium PCs Configuring the PCsOverview Properties Configuring Windows 2000 PCsConfiguring Windows XP PCs Configuring the PCs Configuring Windows XP PCs Password Screen Configuring the Wireless-G Broadband RouterInternet Setup Setup Tab Basic SetupPPPoE Connection Type Router IP Time Setting 11 Setup Tab Ddns Setup Tab Ddns12 Setup Tab MAC Address Clone Setup Tab MAC Address Clone13 Setup Tab Advanced Routing Gateway Setup Tab Advanced RoutingCorrectly Wireless Tab Basic Wireless Settings16 Wireless Tab Wireless MAC Filter Wireless Tab Wireless MAC Filter18 Wireless Tab Advanced Wireless Settings Wireless Tab Advanced Wireless SettingsWireless-G Broadband Router Security Tab VPN Passthrough Security Tab Firewall21 Wireless Tab Wireless Security WPA Pre-Shared Key Security Tab Wireless Security23 Wireless Tab Wireless Security Radius 25 Access Restrictions Tab Access Restrictions Tab28 Applications and Gaming Tab Port Range Forward Applications and Gaming Tab Port Range Forward29 Applications and Gaming DMZ Applications and Gaming Tab DMZAdministration Tab Log Administration Tab Management32 Administration Tab Diagnostics Administration Tab DiagnosticsAdministration Tab Firmware Upgrade Administration Tab Factory Defaults37 Status Tab Router Status Tab Router38 Status Tab Local Network Status Tab Local Network39 Status Tab Wireless Status Tab WirelessCommon Problems and Solutions Appendix a TroubleshootingNeed to set a static IP address on a PC Open a command prompt. For Windows 98 and Me Wireless-G Broadband Router TCP UDP Can’t get the Internet game, server, or application to work VPN IpsecNeed to upgrade the firmware To start over, I need to set the Router to factory defaultFirmware upgrade failed, and/or the Power LED is flashing My DSL service’s PPPoE is always disconnecting Is IPSec Pass-Through supported by the Router? Frequently Asked QuestionsPower LED keeps flashing Where is the Router installed on the network?Does the Router support ICQ send file? What is Network Address Translation and what is it used for?How can I block corrupted FTP downloads? What Ieee 802.11b features are supported? What is DMZ Hosting?What are the advanced features of the Router? What is the Ieee 802.11g standard?What is ISM band? What is ad-hoc mode?What is infrastructure mode? What is roaming?What is a MAC Address? What is Spread Spectrum?What is DSSS? What is FHSS? And what are their differences? What is WEP?Have excellent signal strength, but I cannot see my network How do I resolve issues with signal loss?Brief Overview Appendix B Wireless SecurityWhat Are The Risks? Passive Attacks Active Attacks Maximizing Wireless SecurityCommon Sense Solutions Ssid WEP WPA WPA Radius Appendix C Upgrading Firmware Figure C-1 Upgrade FirmwareTCP/IP Appendix D Windows HelpWindows 2000 or XP Instructions Windows 98 or Me InstructionsFigure E-3 MAC Address/Physical Address For the Router’s Web-based UtilityAppendix F Glossary Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Wireless-G Broadband Router Appendix G Specifications Wireless-G Broadband Router Limited Warranty Appendix H Warranty InformationFCC Statement Appendix I Regulatory InformationWireless-G Broadband Router Wireless-G Broadband Router Appendix J Contact Information

WRT54G specifications

The Cisco Systems WRT54G is a cornerstone of home and small office networking, renowned for its robust features and reliability since its release in 2002. Widely acknowledged as one of the first consumer-grade routers to combine wireless and wired networking capabilities, the WRT54G has earned a legacy as a hallmark of simplicity and performance.

At the heart of its functionality is the 802.11g wireless standard, which allows for wireless connections at speeds of up to 54 Mbps. This technology ensures a reliable connection over significant distances, making it suitable for various home and office environments. The WRT54G operates on the 2.4 GHz frequency band, which provides compatibility with many devices but can be susceptible to interference from other electronic devices.

One of the standout features of the WRT54G is its user-friendly web interface, allowing even non-technical users to easily configure their network settings. This feature promotes security by enabling users to modify their network name, set up encryption protocols like WEP or WPA, and create a guest network for visitors. The router also incorporates a built-in firewall and supports Network Address Translation (NAT), adding an additional layer of security to users’ private networks.

The WRT54G boasts four Ethernet ports for wired connections, accommodating multiple devices simultaneously. This feature is particularly beneficial for users with desktop computers, gaming consoles, or network-attached storage devices requiring stable, high-speed connections. The ability to connect devices through Ethernet ensures that users can enjoy the benefits of a reliable and fast network, especially in environments where wireless connectivity may be limited.

Another distinguishing characteristic of the WRT54G is its open-source firmware capability, which has led to a devoted community of enthusiasts who have developed alternative firmware for greater customization and advanced features. This flexibility not only enhances the router's lifespan but also caters to users who require specific functionalities, such as advanced Quality of Service (QoS) settings or more extensive parental controls.

In conclusion, the Cisco Systems WRT54G remains a significant player in the realm of consumer networking due to its innovative features, ease of use, and adaptability. While newer models have since emerged, the WRT54G's enduring reputation speaks to its reliability and solid performance, making it a preferred choice for many users seeking to establish a dependable network.
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