Hi ISAlist, I have a requirement. I am using ISA 2000 Standard Edition I want to Block all Websites Except the specified email websites Hotmail, Gmail and Yahoo Mail. I don't want anyone to use the search engine of Yahoo, Gmail and MSN Search Engines but email sites must be used I tried to block using site and contents Rules. First I create a destination set and add the above site by adding the website address and then I also add the IP address of the above mention website address. (I find the IP address by nslookup for the websites) Second I create an Allow Rule in Site and contents to Allow the traffic for the above mention destination Rule Second I create another Rule in Site and Contents and Deny "All destination except selected Set" and in the selected set I mention the above created destination set. When I apply all of the above only hotmail website worked but Yahoo Mail and Gmail didn't worked it says ISA Server denies the specified URL I will be very much thankful if some one may guide how to BLOCK ALL Website Except the Specified Website Yahoo Mail, Gmail and Hotmail. Waiting for a positive response and detailed reply with steps of how to do it. Regards, Moazzam Iqbal