Port 3351 is commonly used for the SQL Server Default Instance. It is used for communication between a client and a SQL server instance.
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 3351 |
tcp |
btrieve |
Btrieve port |
REGISTERED PORT |
Port 3351 |
udp |
btrieve |
Btrieve port |
REGISTERED PORT |
UnOfficial
Unofficialy or sometimes with conflict, the same port may be used by different applications.
Port | Protocol (TCP/UDP) | Description |