MDT PXE and Firewall issues RRS feed

  • Question

  • Hi everyone,

    So my company just implemented a firewall in our organization and PXE has been blocked. They opened a bunch of ports for MDT based on this article (, but it seems that when we PXE boot completely random ports outside of the ranges are getting blocked, so it doesn't work (step 3 in the article). Network team is saying that it's how the application is behaving.

    Do you guys have any idea why this is happening and exactly which ports or ranges need to be opened for this to work?

    Thank you,


    Monday, October 10, 2016 1:45 PM

All replies

  • This sounds like an issue with the firewall and TFTP (I believe TFTP randomizes its port usage for certain functions).  I am no network guru but my suggestions are to either 1) configure the TFTP server to not randomize the ports (some servers have this capability) or tell the firewall to allow TFTP traffic to pass. 

    You might be better off posting on a network forum. 

    Monday, October 10, 2016 8:41 PM