which port is which?

Depending how the SQL Server instance is set up, it may be a named instance and not have a standard port of 1433.

To find out which port, you can run netstat in a command prompt.

Another way is to open SQL Server Configuration Manager and browse to:

SQL Server Network Configuration -> Protocols for <SERVERNAME> -> TCP/IP

Then in the TCP/IP window select the IP Address tab and scroll down to IPAll