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Describe

3389 port tcp or udp UDP port 3389 enables acceleration since RDP 8.0. To use RDP, you need to open port 3389 on your Windows firewall and your router. This will allow incoming and outgoing traffic on that port and enable you to connect to your PC remotely..

3389 port not listening  This article provides a comprehensive guide to RDP network ports, with a focus on TCP and UDP protocols.

3389 port is used for  Microsoft’s Remote Desktop Protocol (RDP) enables users to establish remote connections to other computers over TCP AND UDP port 3389. RDP supports UDP for improved performance. Microsoft favours using UDP alongside TCP to enhance responsiveness and reduce latency during remote sessions.