I have also tried the following example using http_access as well suggested: acl special_client src 192.168.0.0/16 acl special_client src 127.0.0.0/8 acl special_url url_regex -i ^http://wiki.squid-cache.org/SquidFaq$ http_access deny special_client special_url http_access allow special_url The same issue, it is always allowed. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/squid-and-url-regex-Not-working-tp4661633p4661642.html Sent from the Squid - Users mailing list archive at Nabble.com.