dear henrik, i am not able to trap the internal machines who run their own proxy server to connect to the main squid proxy server. i scanned the user_agent log. it only gives details about the connection application as MOZILLA, where as the clients are using proxy servers at their end. how to i get the actual information about the application which is connecting and requesting from squid proxy? can this be arrested using firewall? thanx. apee stevie ap1123@xxxxxxxxxxx ____________________________________________________________________________________ Building a website is a piece of cake. Yahoo! Small Business gives you all the tools to get online. http://smallbusiness.yahoo.com/webhosting