Sir, Windows Advanced2000 server is installed , and ISA server is installed ,router is connected to win2k server and the internet connection getting failed when the proxy and firewall services is off, but i can able to browse in the server machine. when the proxy and firewll service is on, all the client machine they can able to access it. but outside user they cannot able to access our website. what could be the problem, how will i rectify it. please help me. alexcie.j