- ICMP (Ping)
- SNMP port 161
- NetBios port 139 (for discovery of Windows Servers)
- NetBios port 137 (for WINS)
This article is kept for reference and is no longer maintained.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.
Ports open on firewall for autodiscovery.
What protocols and what port should be allowed on a firewall for a successful autodiscovery?