Linksys RT31P2 manual Need to set up a server behind my Router

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Broadband Router with 2 Phone Ports

VPNs that use IPSec and AH (Authentication Header known as protocol 51) are incompatible with the Router.

AH has limitations due to occasional incompatibility with the NAT standard.

Change the IP address for the Router 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 192.168.15.X (X is a number from 1 to 254) and your local LAN IP address is 192.168.15.X (X is the same number used in the VPN IP address), the Router will have difficulties routing information to the right location. If you change the Router’s IP address to 192.168.2.1, that should solve the problem. Change the Router’s IP address through the Basic Setup tab of the Web-based Utility. 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 #9, I need to set up online game hosting or use other Internet applications” for details. Check the Linksys website at www.linksys.com for more information.

8.I need to set up a server behind my Router.

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 Router’s Web-based Utility. We will be setting up web, ftp, and mail servers.

A.Access the Router’s Web-based Utility by going to http://192.168.15.1 or the IP address of the Router. Go to the Applications & Gaming => Port Range Forwarding tab.

B.Enter any name you want to use for the Application.

54	Appendix A: Troubleshooting
	Common Problems and Solutions

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Contents Broadband Router How to Use this Guide Copyright and TrademarksWord definition Table of Contents Appendix a Troubleshooting Common Problems and Solutions Frequently Asked QuestionsBack Panel Front Panel16 Security Tab VPN Passthrough Introduction WelcomeWhat’s in this Guide? Introduction What’s in this Guide? Broadband Router with 2 Phone Ports Networking Basics An Introduction to Local Area NetworksUse of IP Addresses Networking Basics Getting to Know the Router Back PanelFront Panel Proceed to Connecting the Router Broadband Router with 2 Phone Ports Connecting the Router OverviewConnection Instructions Connect a PCConfiguring the Router SetupSecurity VoiceApplications & Gaming How to Access the Web-based Utility AdministrationStatus Setup Tab Basic Setup Internet SetupInternet Connection Type Obtain an IP automaticallyStatic IP PPPoERAS for SingTel PPPoEPptp Heart Beat Signal Heart Beat SignalNetwork Setup Optional SettingsRouter IP Packet a unit of data sent over a networkNetwork Address Server Settings Dhcp Setup Tab Ddns Time SettingDynDNS.org TZO.comSetup Tab MAC Address Clone MAC CloneSetup Tab Advanced Routing Advanced Routing13 Routing Table Entry List Security Tab Filter Filter IP Address RangeFilter Port Range Filter MAC AddressBlock WAN Requests 15 Filtered MAC AddressSecurity Tab VPN Passthrough VPN PassthroughVoice Tab Applications & Gaming Tab Port Range ForwardingPort Range Forwarding Port RangeApplications & Gaming Tab Port Triggering Port TriggeringTriggered Range Applications & Gaming Tab UPnP Forwarding UPnP ForwardingForwarded Range Configuring the Router Broadband Router with 2 Phone Ports Applications & Gaming Tab DMZ DMZApplications & Gaming Tab QoS Application-based QoSPort-based QoS Specific Port# fieldsVoice QoS Administration Tab Management Router PasswordLocal Router Access Remote Router AccessBackup and Restore UPnPAdministration Tab Log LogAdministration Tab Factory Defaults Administration Tab Firmware UpgradeFirmware the programming code that runs a networking device Status Tab Voice InformationLine1 Status Line2 StatusStatus Tab Router 31 Status Tab RouterStatus Tab Local Network Local NetworkAppendix a Troubleshooting Common Problems and SolutionsFor Windows 98 and Millennium Need to set a static IP address on a PCFor Windows For Windows XPWant to test my Internet connection For Windows XP Configuring the Router for details Am not able to access the Router’s Web-based Utility Setup Need to set up a server behind my Router Application Start and End Protocol IP Address Enabled TCPCan’t get the Internet game, server, or application to work Broadband Router with 2 Phone Ports To start over, I need to set the Router to factory default My DSL service’s PPPoE is always disconnectingFor Microsoft Internet Explorer 5.0 or higher For Netscape 4.7 or higherBroadband Router with 2 Phone Ports Need to use port triggering Frequently Asked Questions How do I make a phone call?Can I make calls if my Internet connection is down? Can I make calls while I’m browsing the Internet?Where is the Router installed on the network? Is IPSec Passthrough supported by the Router?Does the Router support IPX or AppleTalk? How can I block corrupted FTP downloads? Broadband Router with 2 Phone Ports If all else fails in the installation, what can I do? What is DMZ Hosting?Will the Router function in a Macintosh environment? Is the Router cross-platform compatible? How many ports can be simultaneously forwarded?Which modems are compatible with the Router? How can I check whether I have static or Dhcp IP addresses?Figure B-1 IP Configuration Screen Windows 98 or Me InstructionsWindows 2000 or XP Instructions For the Router’s Web-based UtilityAppendix C Windows Help Shared ResourcesNetwork Neighborhood/My Network Places Appendix C Windows Help Appendix D Glossary Appendix D Glossary Broadband Router with 2 Phone Ports Packet a unit of data sent over a network Broadband Router with 2 Phone Ports Broadband Router with 2 Phone Ports Appendix E Specifications Two Standard Phone Ports, One Power PortAppendix E Specifications Appendix F Warranty Information Limited WarrantyAppendix F Warranty Information Appendix G Regulatory Information FCC StatementAppendix G Regulatory Information Appendix H Contact Information Appendix H Contact Information