Dear Friends I have read an article on isaserver.org regarding site and content rules. I have created the rules to block some sites, but the main problem is when a client puts proxy settings in IE it blocks and when the client remove proxy setting (i.e. ip address of ISA server port 8080), it doesnot block the site. Is there a way to apply site and content rules to those clients who have not put the proxy settings in IE. Your advice needed on how to block files which have extensions .exe, .mp3, .avi etc.