Hi List, Can any one teach me how can I know who is my domain controller whether Active Directory or Windows NT. In detail I am using a windows-xp client how can I know weather it is getting it is logging into the windows server 2003 (Active Directory) or Windows NT. how can a native user identify it without having any help from domain cotroller or system administrator, is there any utility to identify the domain controller, or is there any protocol packet difference while netlogin using Active Directory or windows NT. Thanks in advance Regards Brijesh Shukla