3390 Port Exclusive Jun 2026

If you inherit a server and don't know the port, run netstat -an | findstr "LISTENING" to spot active RDP listeners.

By default, Windows Remote Desktop uses . However, system administrators often change this port to 3390 (or other high ports) to bypass router conflicts or to add a layer of "security through obscurity" against automated bots scanning the default port. 3390 port

In the "Computer" field, use a colon : to separate the IP and port. If you inherit a server and don't know

To make a Windows computer listen for Remote Desktop connections on port 3390, you must edit the Registry. Windows Remote Desktop uses . However

If you inherit a server and don't know the port, run netstat -an | findstr "LISTENING" to spot active RDP listeners.

By default, Windows Remote Desktop uses . However, system administrators often change this port to 3390 (or other high ports) to bypass router conflicts or to add a layer of "security through obscurity" against automated bots scanning the default port.

In the "Computer" field, use a colon : to separate the IP and port.

To make a Windows computer listen for Remote Desktop connections on port 3390, you must edit the Registry.

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