Linksys BEFSR81 manual Am not able to access the Router’s Web-based Utility Setup

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EtherFast Cable/DSL Router with 8-Port Switch

4.I am not able to access the Router’s Web-based Utility Setup page.

A.Refer to “Problem #2, I want to test my Internet connection” to verify that your computer is properly connected to the Router.

B.Refer to “Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter” to verify that your computer has an IP Address, Subnet Mask, Gateway, and DNS.

C.Set a static IP address on your system; refer to “Problem #1: I need to set a static IP address.”

D.Refer to “Problem #10: I need to remove the proxy settings or the dial-up pop-up window (for PPPoE users).”

5.I can’t get my Virtual Private Network (VPN) to work through the Router.

Access the Router’s web interface by going to http://192.168.1.1 or the IP address of the Router, and go to the Security => VPN Passthrough tab. Make sure you have IPsec passthrough and/or PPTP passthrough 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 Router; 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 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 192.168.1.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 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 #7, 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.

6.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

Appendix A: Troubleshooting

43

Common Problems and Solutions

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Contents Cable/DSL Router Copyright and Trademarks How to Use this GuideWord definition Table of Contents Common Problems and Solutions Frequently Asked Questions Appendix a TroubleshootingAppendix B Upgrading Firmware Ethernet AdapterBack Panel List of FiguresDdns Disabled Welcome IntroductionWhat’s in this Guide? EtherFast Cable/DSL Router with 8-Port Switch An Introduction to LANs Networking BasicsUse of IP Addresses Networking Basics Use of IP Addresses Getting to Know the Router Reset Button Reset button can be used in one of two waysFront Panel Overview Connecting the RouterConnect a PC Connection InstructionsConfiguring Windows 98 and Millennium PCs Configuring the PCsConfiguring Windows XP PCs Configuring Windows 2000 PCsInternet Protocol TCP/IP for Windows XP Instructions Configuring the RouterStatic IP Obtain an IP Automatically or DhcpRAS PPPoEPptp Heart Beat SignalSetup Using The Router’s Web-based UtilityNavigating the Utility SecurityAdministration Quick and Easy AdministrationApplications & Gaming StatusInternet Setup Basic SetupPPPoE RAS for SingTelPptp Heart Beat SignalOptional Settings Network SetupRouter IP Ddns Network Address Server Settings DhcpDynDNS.org MAC Address CloneTZO.com MAC Clone Advanced Routing14 Routing Table FilterFilter Port Range Filter IP Address RangeFilter MAC Address Block WAN RequestsPort Range Forwarding VPN PassthroughPort Range Triggered Range Port TriggeringForwarded Range 20 UPnP Forwarding UPnP ForwardingDMZ QoS QoSApplication-based QoS Local Router Access Router AccessManagement Port-based QoSIdentification Remote Router AccessUPnP Log25 Incoming Log Table Factory DefaultsUpgrade Firmware Firmware UpgradeRouter Information31 Local Network Local NetworkCommon Problems and Solutions Appendix a TroubleshootingFor Windows 98 and Millennium For Windows For Windows XP For Windows 98 and Millennium EtherFast Cable/DSL Router with 8-Port Switch Need to set up a server behind my Router Am not able to access the Router’s Web-based Utility SetupTCP Application Start and End Protocol IP Address EnabledCan’t get the Internet game, server, or application to work Need to upgrade the firmware To start over, I need to set the Router to factory defaultFor Microsoft Internet Explorer 5.0 or higher For Netscape 4.7 or higherMy DSL service’s PPPoE is always disconnecting Firmware upgrade failedNeed to use port triggering Where is the Router installed on the network? Frequently Asked QuestionsIs IPSec Passthrough supported by the Router? Does the Router support IPX or AppleTalk?How can I block corrupted FTP downloads? Will the Router function in a Macintosh environment? What is DMZ Hosting?Is the Router cross-platform compatible? How many ports can be simultaneously forwarded?How do I get mIRC to work with the Router? How can I check whether I have static or Dhcp IP addresses?Appendix B Upgrading Firmware Figure B-1 Upgrade FirmwareWindows 2000 or XP Instructions Windows 98 or Me InstructionsFigure C-3 MAC Address/Physical Address For the Router’s Web-based UtilityShared Resources Appendix D Windows HelpNetwork Neighborhood/My Network Places Appendix E Glossary EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch EtherFast Cable/DSL Router with 8-Port Switch Eight 10/100 RJ-45 Switched Ports Appendix F SpecificationsStandards PortsLimited Warranty Appendix G Warranty InformationFCC Statement Appendix H Regulatory InformationNeed to contact Linksys? Appendix I Contact InformationInformation section in this Guide
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