RDP Network Port Configuration, Security, & Best Practices

3389 port used for Port 3389 is used for Windows Remote Desktop and Remote Assistance connections (RDP), as well as some security vulnerabilities and applications. Learn more about the protocol, service, threats, and references for port 3389..

port 3389  RDP Port, also known as Port 3389, is the default network port used by Remote Desktop Protocol. It serves as the communication channel through which RDP clients (users) connect to RDP servers (remote computers or servers).

port 3389 tcp or udp  RDP’s default port 3389 can be used to launch on-path attacks. BlueKeep was one of the most serious RDP vulnerabilities and it was officially labeled as CVE-2019-0708. It was a remote-code execution (RCE) with no authentication and adhered to a specific format. It was workable and ended up spreading to other machines within the network.