I manage a silly dedicated game server box for me and my buddies to host games on. We kept getting hundreds of auth requests daily so we decided to change our RDP port. My buddy said he was going to do this and he successfully changed the RDP port. He however, forgot to open the firewall ports. haha
Good thing we had the JC agent installed.. I was able to issue a powershell command to open the RDP port.
New-NetFirewallRule -DisplayName 'RDP Port' -Profile 'Private' -Direction Inbound -Action Allow -Protocol TCP -LocalPort port-number