Is RDP using TCP or UDP?
Accordingly, does RDP need UDP?
Hi, RDP 8.0/8.1 can use TCP only, or TCP and UDP. You should not be seeing disconnects as a result of UDP being blocked by your firewall. The RD Client should detect that UDP is not available and only use TCP.
Likewise, what is port 3389 commonly used for? Port 3389 Basics TCP Port 3389 is used for the Windows Remote Desktop Protocol (RDP) and is also sometimes used by Windows Terminal Server. You may choose to allow or open this port in Windows Firewall to give another computer, either on the same network or another network, access to your computer.
Similarly, it is asked, what port should I use for RDP?
By default, Remote Desktop (formerly known as Terminal Services) uses TCP port 3389. If you use Remote Desktop Protocol (RDP) to connect to your Windows computer, you might want to consider modifying the default port for security reasons.
Does RDP use RPC?
Remote Desktop doesn't use RPC, though, so a different approach would need to work. Now, HTTP tunnels (as well as SSH tunnels) WILL work >443) RDP will encrypt well enough.