Hi all, i need your help. I cant block access to some sites when users using old versions of Netscape Communicator 4.7, 4.8 enters this kind of urls http://www.google.com.ar%00@xxxxxxxxxxxxxxx/ I have tried this acl 1rule url_regex -i bangbus ---- http_access deny 1rule (as the first http_access line !!!!) ---- And they can access anyway: 1116857165.790 386 ******* TCP_MISS/200 4330 GET http://www.google.com.ar%00@xxxxxxxxxxxxxxx/ ******* DIRECT/66.230.129.242 text/html i have also try to block the "%00@" in url_regex, dstdom_regex, urlpath_regex....and it didnt work. How can i block this requests ? Thanks Galle