I can already achieve squid authentication with windows domain group ,but how to verify a single windows domain user? squid.conf external_acl_type NT_global_group %LOGIN /usr/lib/squid/wbinfo_group.pl acl ProxyUsers external NT_global_group NTusers acl AuthenticatedUsers proxy_auth REQUIRED http_access allow AuthenticatedUsers ProxyUsers I used debian 4.0 -- View this message in context: http://www.nabble.com/How-to-verify-a-single-windows-domain-user-with-squid--tp22344398p22344398.html Sent from the Squid - Users mailing list archive at Nabble.com.