Port 3390 is used for remote desktop access (RDP) on some computers, particularly those running Windows operating system. It is an alternative port to the default port 3389, which may be used for security reasons or to allow multiple RDP sessions on the same computer.
Ports those registered with IANA are shown as official ports. The same port number may be unofficialy used by various services or applications. The official usage are listed separately below its usage may change from time to time.
Official
Port |
Protocol (TCP/UDP) |
Title |
Description |
Port Type |
Port 3390 |
tcp |
dsc |
Distributed Service Coordinator |
REGISTERED PORT |
Port 3390 |
udp |
dsc |
Distributed Service Coordinator |
REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |