<snip> acl all src 0.0.0.0/0.0.0.0 deny_info CUSTOM_ALL all # LOTS OF ACL NOT BEING USED HAVE BEEN CUT... acl local-net src 10.0.0.0/255.255.0.0 deny_info CUSTOM_LOCAL_NET local-net http_access allow local-net <snip> Have you tried just testing the acl src by just having httpd_access allow src to see what happens? What might also be a problem is if your acl local-net doesn't have the same subnet mask as the one that your clients are being assigned statically or via dhcp? When you say squid doesn't respond, does it return any error messages to the client's browser? Does it happen when websites with dynamic content are accessed (http://yourwebsite.com/index.php?id=8), or with static websites (http://yourwebsite.com/link.htm) Nolan