the reason is to bypass the GFW. many well-known global sites are blocked here, including various google services. While VPN is a solution, i found proxying is more convenient for ordinary user. -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/how-to-implement-access-control-using-connetcing-hostname-and-port-tp4666818p4666837.html Sent from the Squid - Users mailing list archive at Nabble.com.