Hi All I brought up the ISA server in production environment configured for web publishing. Its really simple configuration but still doesn't work. All DNS entries are in place . The web server is hosting multiple sites using different ports. . Web publishing rules are redirecting the request using IP of internal web server at different ports for different web sites(so no name resolution is required for internal web server). There is a www A record in the DNS resolves to external IP of ISA. There are entries in DNS for each site URL and resolves to external IP of ISA. All this works with proxy server. But when I replaced the proxy with ISA(using same IP configuration) it doesn't work. Any help is appreciated. thanks Shobha Sharma Network Operating Systems OIS Bureau of Technology Department of Public Welfare 717 772 7204