Very strange bug in ESXi 6.5 U2 that has been present and not repaired since ESXi 5.1 as first described here: Re: Stopping SSH on ESXi 5.1 produces error
Actions Taken:
- Attempted connection of SSH to ESXi 6.5 host. Connection refused.
- Identified that the firewall rule for SSH Server was disabled
- SSH was found to be running, but unable to connect because firewall prevented connection
- Enabled the firewall rule for SSH Server.
- Connected using SSH
- Disconnected from SSH
- Attempted to disable SSH Server firewall rule, received error "Cannot change the host configuration." (in vCenter) or "Failed cannot change the host configuration" (in web client connected to host).
- Stopped SSH (puts host back in a better security posture, but this is not the original condition of host when I found it)
- Attempted to disable the SSH Server rule again, but got same errors
Question:
Why can't I put the host back into the state I found it (namely, disabled SSH Server firewall rule which means, the firewall blocks SSH traffic although SSH daemon is still running)?