But I have restructured AD2003. And groups changed to organization unit. I changed my message on the nabble.com. I have my users: in a OU=Unibel, user=unibel and in a default container 'Users' user=squidtest. Authentication for users in the 'Users' container works well: ./squid_ldap_auth -u cn -b "cn=Users,dc=bsuir,dc=by" 172.16.83.1 squidtest squidtest OK How do I check authentication for users in the Organization Unit? What command line parameters for squid_ldap_auth use? I saw the squid_ldap_auth manual, but I do not help solve the problem. Tried recording format: ./squid_ldap_auth -b "ou=Unibel,dc=bsuir,dc=by" 172.16.83.1 unibel unibel ERR Success please help me Regards Andrew Matskevich -- View this message in context: http://www.nabble.com/squid_ldap_auth-%2B-ad2003-tp14948010p14996691.html Sent from the Squid - Users mailing list archive at Nabble.com.