Product: MS SQL Server 2008
Following is the step to determine TCP/IP port used by MS SQL Server. You can configured it to different port, or give the port number to firewall administrator to open it for client to access to it
On right panel, click on TCP/IP (it must be enabled), then click on tab IP Address in the dialog box. Scroll to bottom to see the TCP Port value. Default is 1433
If required, change the port number to desire value.
For server with multiple database instance, there will be multiple entry under SQL Server Network Configuration. Click on each to determine the TCP Port used
Tips on login using the port and server instance name, in SSMS, under server name, use any of the following format