Linksys HG200 manual What is Network Address Translation and what is it used for?

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Home Wireless-G Gateway

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 won’t 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.

Appendix A: Troubleshooting

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Frequently Asked Questions

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Contents 4802GHz.11g Home Wireless-G Word definition How to Use this GuideCopyright and Trademarks Table of Contents Ethernet Adapter Ports and Reset Button on Side Panel Network23 Internet Access Introduction WelcomeWhat’s in this User Guide? Home Wireless-G Gateway IP Addresses Planning Your NetworkGateway’s Functions What’s an IP Address?Dhcp Dynamic Host Configuration Protocol Servers Dynamic IP AddressesGetting to Know the Home Wireless-G Gateway Ports and Reset Button on Side PanelWireless LEDs on Side PanelBottom Panel Bottom Panel with Stand in Closed PositionConnecting the Home Wireless-G Gateway OverviewWired Connection to a Computer Connect the Adsl LineWireless Connection to a Computer Wireless Configuring the Home Wireless-G GatewaySetup Security Access RestrictionsAdministration Applications & GamingBasic Setup Tab How to Access the Web-based UtilitySetup Tab Internet SetupRFC 1483 Bridged Dynamic IP Static IPRFC 1483 Routed RFC 1483 RoutedRFC 2516 PPPoE RFC 2364 PPPoANetwork Setup Bridged Mode OnlyOptional Settings required by some ISPs Configuring the Home Wireless-G Gateway Setup Tab TZO.com Ddns TabDynDNS.org Advanced Routing Tab Advanced Routing13 Routing Table Wireless Network Wireless TabBasic Wireless Settings Tab Wireless Security Tab 15 Pre-Shared Key16 WEP Wireless Access Tab Wireless Network AccessAdvanced Wireless Settings Tab Advanced WirelessFirewall Security TabVPN Passthrough Additional FiltersBlock WAN Requests 22 Firewall LogAccess Restrictions Tab Internet Access Tab25 List of PCs Single Port Forwarding Applications and Gaming TabSingle Port Forwarding Tab Port Range Forwarding Tab 28 Port Range ForwardingPort Triggering Tab 29 Port TriggeringDMZ Tab 30 DMZApplication-based QoS QoS TabQoS Management Tab Administration TabGateway Access UPnP IGMP-ProxyEmail Alerts Reporting TabReporting Backup Configuration Diagnostics TabBackup&Restore Tab Restore ConfigurationUpgrade from LAN Factory Defaults TabFirmware Upgrade Tab Reboot Tab RebootGateway Information Status TabGateway Tab Internet ConnectionLocal Network Tab 42 Local Network45 Wireless PVC Connection DSL Connection TabDSL Status Need to set a static IP address on a computer Appendix a TroubleshootingCommon Problems and Solutions Want to test my Internet connection Home Wireless-G Gateway Home Wireless-G Gateway TCP UDP Can’t get the Internet game, server, or application to work Firmware upgrade failed, and/or the Power LED is flashing To start over, I need to set the Gateway to factory default Need to upgrade the firmware My DSL service’s PPPoE is always disconnectingPower LED flashes continuously Is IPSec Passthrough supported by the Gateway? Frequently Asked QuestionsWhere is the Gateway installed on the network? Does the Gateway support IPX or AppleTalk?What is Network Address Translation and what is it used for? Does the Gateway support ICQ send file?What is DMZ Hosting? Is the Gateway cross-platform compatible? What are the advanced features of the Gateway?What is the Ieee 802.11g standard? How many ports can be simultaneously forwarded?What is infrastructure mode? What Ieee 802.11b and 802.11g features are supported?What is ad-hoc mode? What is roaming?What is DSSS? What is FHSS? And what are their differences? What is the ISM band?What is Spread Spectrum? What is WEP?Have excellent signal strength, but I cannot see my network How do I reset the Gateway?How do I resolve issues with signal loss? Security Threats Facing Wireless Networks Appendix B Wireless SecuritySecurity Precautions Appendix B Wireless Security Home Wireless-G Gateway Figure C-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions Figure C-3 MAC Address/Physical AddressFigure D-1 Firmware Upgrade Appendix D Upgrading FirmwareAppendix E Glossary Home Wireless-G Gateway Home Wireless-G Gateway Home Wireless-G Gateway Home Wireless-G Gateway Home Wireless-G Gateway Home Wireless-G Gateway Appendix F Regulatory Information Radio EN 300 EMC EN 301 489-1, EN 301 Safety EN Belgium Applicable Power Levels in France Location Frequency Range MHz Power EirpWireless Adapters Open the Wireless Network Connection windowHome Wireless-G Gateway Appendix G Warranty Information Lite, G.922.3, G.992.5, T1.413i2 Appendix H SpecificationsModel Number HG200 Standards Operating Humidity Outside of Europe Mail Address Appendix I Contact InformationEurope Mail Address
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