All, Below the lines that exist in my squid.conf acl our_networks src 192.168.1.0/24 http_access allow our_networks http_access deny all Will it be more effective below? And what is the impact? acl our_networks src 192.168.1.0/24 http_access deny !our_networks (and line "http_access deny all" be removed) Please advise Thx & Rgds, Wong