Linksys WRT54GS-FR User's Manual - Page 38

Instant Wireless® Series B. Open a command prompt. • For Windows 98 and Me, please click Start and Run. In the Open field, type in command. Press the Enter key or click the OK button. • For Windows NT, 2000, and XP, please click Start and Run. In the Open field, type cmd. Press the Enter key or click the OK button. C. In the command prompt, type ping 192.168.1.1 and press the Enter key. • If you get a reply, the computer is communicating with the Router. • If you do NOT get a reply, please check the cable, and make sure Obtain an IP address automatically is selected in the TCP/IP settings for your Ethernet adapter. D. In the command prompt, type ping followed by your Internet or WAN IP address and press the Enter key. The Internet or WAN IP Address can be found on the Status screen of the Router's web-based utility. For example, if your Internet or WAN IP address is 1.2.3.4, you would enter ping 1.2.3.4 and press the Enter key. • If you get a reply, the computer is connected to the Router. • If you do NOT get a reply, try the ping command from a different computer to verify that your original computer is not the cause of the problem. E. In the command prompt, type ping www.yahoo.com and press the Enter key. • If you get a reply, the computer is connected to the Internet. If you cannot open a webpage, try the ping command from a different computer to verify that your original computer is not the cause of the problem. • If you do NOT get a reply, there may be a problem with the connection. Try the ping command from a different computer to verify that your original computer is not the cause of the problem. 3. I am not getting an IP address on the Internet with my Internet connection. A. Refer to "Problem #2, I want to test my Internet connection" to verify that you have connectivity. B. If you need to register the MAC address of your Ethernet adapter with your ISP, please see "Appendix D: Finding the MAC address and IP Address for Your Ethernet Adapter." If you need to clone the MAC address of your Ethernet adapter onto the Router, see the System section of "Chapter 6: The Router's Web-based Utility" for details. C. Make sure you are using the right Internet connection settings. Contact your ISP to see if your Internet connection type is DHCP, Static IP Address, or PPPoE (commonly used by DSL consumers). Please refer to the Setup section of "Chapter 6: The Router's Web-based Utility" for details on Internet connection settings. 68 Wireless-G Broadband Router D. Make sure you have the right cable. Check to see if the Internet column has a solidly lit Link/Act LED. E. Make sure the cable connecting from your cable or DSL modem is connected to the Router's Internet port. Verify that the Status page of the Router's web-based utility shows a valid IP address from your ISP. F. Turn off the computer, Router, and cable/DSL modem. Wait 30 seconds, and then turn on the Router, cable/DSL modem, and computer. Check the Status tab of the Router's web-based utility to see if you get an IP address. 4. I am not able to access the Setup page of the Router's web-based utility. 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 D: 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) working 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 tab. Make sure you have IPsec pass-through 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 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 Setup tab 69