Ports required for Active Directory
During a recent Active Directory implementation project, I went through the hassle of finding out which ports are needed to allow proper AD traffic to pass through a firewall. There are a few lists out there, but none of them totally conclusive. While I am not giving an absolute guarantee, my list started small opening a bare minimum of ports, and then through monitoring what requests were being blocked by the firewall, one by one opened up a few additional ports. Eventually we found what we needed and had no more blocked requests getting caught by the firewall. more »
