Helo, what I want appear easy but I can't to solve my issue alone. I have just to Install a box ( CentOS 5.8 ) with squid Transparent and I want DENY the url facebook.com but isn't work. follow my acls and http_access acl lan src 10.0.0.0/20 acl sites_bloqueados url_regex -i /etc/squid/acls/sites_bloqueados.txt http_access deny sites_bloqueados http_access allow lan in the sites sites_bloqueados.txt there is the url facebook.com but the proxy doesn't DENY it. so....I wonder how to deny sites by transparent proxy ? any tips are welcome