Hi, yes, there are different ways. If you set the authentication scheme to use only ntlm and set the rule to allow only traffic that matches that acl. Example: auth_param ntlm program /usr/local/bin/ntlm_auth --helper-protocol=squid-2.5-ntlmssp auth_param ntlm children 50 auth_param ntlm keep_alive on acl auth_user proxy_auth REQUIRED http_access allow auth_users http_access deny all Regards, Isnard On Mon, 2007-11-26 at 19:09 +0100, shacky wrote: > Hi. > > I'm configuring a Squid proxy with the ntlm authentication. > Is there a way to allow the Internet access only from the clients > connected to the Active Directory domain? > > Thank you very much! > Bye.