For monitoring Windows OS the following ports should be opened: 139, 445 TCP ports 137, 138 UDP ports ICMP
This article is kept for reference and is no longer maintained. It describes a version of NetCrunch that is out of support, and the product has changed since.
Recommended ports over UDP/TCP to allow NetCrunch to read Windows Performance counters remotely
What ports need to be open on my firewall for NetCrunch to read Windows Performance counters or for autodiscovery to discover remote devices?
