What ports do GPG use? (NETIQKB37842)

  • 7737842
  • 02-Feb-2007
  • 15-Mar-2013


NetIQ Group Policy Guardian 2.0


What ports do GPG use?
What protocols do GPG components use to communicate?
What are the mechanisms for communication between Collectors, domain controllers, and GPG Servers?

How do I secure TCP/IP ports?


GPG components use the following mechanisms to communicate:

  • Collectors communicate with domain controllers using Windows Management Instrumentation (WMI).
  • WMI uses the Distributed Component Object Model (DCOM).
  • DCOM uses remote procedure calls (RPC) on TCP port 135 as well as ports in the 1024 to 65535 range.
  • Collectors and GPG Servers communicate with Microsoft Message Queue Server (MSMQ).  This communication is bi-directional.

Additional Information

Formerly known as NETIQKB37842
For more information about securing TCP/IP ports, see the Microsoft Knowledge Base article 300083: "How to Restrict TCP/IP Ports on Windows 2000 and Windows XP" http://support.microsoft.com/default.aspx?scid=kb;en-us;300083 and 178517: "TCP ports, UDP ports, and RPC ports that are used by Messaging Queuing" http://support.microsoft.com/default.aspx?scid=kb;en-us;Q178517.