as astaro is working with squid, the best way to go is searching in google for "squid FAQ" If you are not feeling like searching just read the following: ------------------------------------------------ go to /var/chroot-squid/etc/ and edit the file squid.conf-default, then edit the file at ACCESS CONTROLS and write something like: acl myrule url_regex name1 name2 name3 ...nameN where name1 to nameN are words that you want to block. Then at the http_access before http_access allow all, insert http_access deny myrule then start and stop squid /sbin/init.d/squid stop /sbin/init.d/squid start ------------------------------------------------ That should be all, have fun! [:)] P.S: Even more interesting than that url blocking is this file flocking... acl download_files urlpath_regex \.hqx$ \.bin$ \.mpeg$ \.avi$ \.rar$ \.ace$ \.mpe$ \.mov$ http_access deny download_files, try it!