Understanding the Required Infrastructure for Group Policy
Local Group Policy is available on any computer running Windows 2000, Windows XP Professional, or Windows Server 2003. Domain-based Group Policy is available only if your network is running Active Directory. Because Active Directory in turn relies on TCP/IP and Domain Name System (DNS), you must implement TCP/IP networking, DNS, and Active Directory to use domain-based Group Policy.
DNS and Active Directory
DNS provides the naming context that allows one computer to find another computer. It is an Internet Engineering Task Force (IETF) standard name service that is described in detail in RFC 1034 and RFC 1035. DNS is installed automatically with TCP/IP on workstations and servers, and it ...