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Active Directory Port Requirements

Active Directory Port Requirements

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A few days ago we posted a document to TechNet that outlines some of the various port requirements for Active Directory.  We gathered the port information from various KB articles and consolidated them into one document.  I think it should serve as a great reference guide for those of you configuring Active Directory communication through internal and external firewalls.  It details ports used by trusts, replication, global catalog, DNS, DHCP, etc.  It also outlines the new default dynamic port range, 49152-65535, for Windows Server 2008 and Windows Vista and pointers to why the range was increased from previous versions of our operating systems.

Active Directory and Active Directory Domain Services Port Requirements (http://technet.microsoft.com/en-us/library/dd772723(WS.10).aspx)

As always, if you have any suggestions for improvement please leave us feedback. 

This posting is provided "AS IS" with no warranties, and confers no rights.

Comments
  • Thanks, this is what I needed :-)

  • Thanks for the info

  • This article is a great one. It describes all clearly. I really liked it. It’s very helpful. I was looking for such articles. I have read a article here "www.techyv.com/.../all-ports-used-active-directory" which is almost like this.

  • We are trying to identify what ports are required for trust between 2 separate forests. I would think that the ports required would be much less than communication between DC's in the same forest. Can you please confirm if where you list Trusts applies to Forest to Forest communication?

    Thanks!

  • Hi Chris,

    This looks like a better reference for port requirements for specific operations related to trusts: technet.microsoft.com/.../cc773178(v=WS.10).aspx

    I think some of the other trust-related ports listed at technet.microsoft.com/.../dd772723(WS.10).aspx pertain to communication over internal trusts within a forest (except for where it explicitly cites forest trust). I can try to clarify that.

    Thanks,

    Justin [MSFT ]

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