Hi, I want to block teamviewer usage also configuring with squid . For that matter i tried to write access rules to block the access the client from squid.conf . I wrote simple acls acl like acl teamviewer dstdomain .teamviewer.com http_access deny teamviewer and after tried acl teamviewer.com url_regex teamviewer.com http_access deny teamviewer This worked at 2 proxy servers but i dont know why at the 3rd proxy it didnt worked. I can still access the site form this squid. How can i block it ? at this proxy there are similar acls which works fine. Regards