Cant access or ping certain websites

[Woids]

Hello am hoping someone can help me. I recently purchased a wireless speedstream router and a belkin wireless usb adapter to share my dsl internet connection between two pcs. However, not all websites are accessible to me. For example, I can't access panicware.com, mess.be, oldversion.com, pantheon.org or comicboards.com. I try to ping the websites in DOS but they always time-out. The usb adapter is connected to my Dell 8250 which has Win XP Pro and the router is connected to the family Compaq 6000 series which has XP Home on it. The IP address given with the router is 192.168.254.254 if it helps. The router normally assigns the Dell 8250 an ip address of 192.168.254.3 and the subnet mask is 255.255.255.0. I just hope someone can give me suggestions on what to do or what do download so I can start accessing all websites and not just a few without getting dns and ping timeouts.

Thanks for any help you can provide.

 

[ChicagoTechNet]

quoted form

http://www.ChicagoTech.net

Can't access some web sites
Symptoms: 1) If you're using MS ICS or Windows server as router to access the Internet, your clients may not be able to access certain web sites. However, the ICS host or the server doesn't have this problem.
2) After installed a new router or cable modem replacing dial-up to access the Internet, you can't access some web sites.
3) You also find that most web sites you can't access are block to ping or they are security sites using HTTPS.

Causes: 1) The problem occurs because many web servers block ICMP messages and the packets are dropped. As a result, the requested web site doesn't load.
2) This problem is caused also by an incompatible MTU networking setting. You may try to install the latest SP. If you use MS ICS, you may want to configure all your Client computers to use the new, lower MTU as the default for all Internet communication. To modify the MTU size, locate the following registry key: HKEY_LOCAL_MACHINE\ SYSTEM\ CurrentControlSet\ Services\ Tcpip\ Parameters\ Interfaces. If you use a router like Cisco DSL Router, you may want to adjusting the PPPoE MTU Size. For example, to adjusting the PPPoE MTU Size on the Cisco DSL Router, do

interface ethernet0
no shut
ip address <ip address> <subnet mask>
ip adjust-mss 1452


Robert Lin, MS-MVP, MCSE & CNE
Windows, Network and How to at

http://www.ChicagoTech.net