I finally got authentication to work with my AD but am now having problems with groups in AD. I ran the line from my conf file ... /usr/lib/squid3/squid_ldap_group -R -K -b "dc=domain,dc=local" -D squid@domain.local -w "password" -f "(&(objectclass=person)(sAMAccountName=%v)(memberof=cn=%g,ou=Users,dc=domain,dc=local))" -h ac1.domain.local Then I type... username Internet Users Blocked And I get ERR Not sure what to look for, not even sure if there are logs to look at to try and troubleshoot. Eric Vanderveer