Network Port Diagram vSphere

I was troubleshooting an issue with an ESXi host and Update Manager for which I needed the firewall ports. In KB2131180 you can find a PDF document with a beautiful diagram and reference table. But getting all the required ports between a specific source and destination was not easy. So…

ESXi Events flooded… Firewall configuration has changed.

I was investigating an event that would appear every two minutes, flooding the Events on the host. So the first event in the sequence is “Port vmk1 is now protected by Firewall”. Followed by “Firewall configuration has changed. Operation ‘allowall’ for rule set iSM succeeded” and finally “Firewall configuration has…