Change RDP Port on PS
Set-ItemProperty -Path 'HKLM:\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations\RDP-Tcp' -name "PortNumber" -Value 3390
New-NetFirewallRule -DisplayName 'RDP New Port' -Direction Inbound -Protocol TCP -LocalPort 3390 -Action Allow
Restart-Service -Name TermService -Force