I'm running into a problem where random PCs cannot play games online at my Cybercafe. Users can intially play online at times but may get kicked from an online game or simply choose another game when the problem starts. When I find one of my PCs having this problem I check to see if I can ping the PC from the main cafe management server. I can see the PC and ping it internally but multiplayer servers will not appear on any game nor will it allow me to connect to various games online such as World of Warcraft. WoW simply says" Unable to connect" when attempting to login. If I try to acccess the Internet using a broswer I can't connect as well. If I exclude the IP from my Win2k3 DHCP server's scope and force the problem PC to get a new IP, I can connect with no problems with a new IP. My was router was configured to handle dual T1s with two wics at one point but it's been reconfigured for only one. I do have an ISA server running with it's built in firewall but it's configured to proxy all Internet traffic though our DSL line and had nothing to do with this router or the T1. I've replaced my entire Win2k3 server and completely reinstalled DHCP server as well. I've also chage port on my Cisco 2948G switch. This problem has been gotten out of hand and I would appreciate any input.
