TCP 1433
TCP port 1433 is the default port for SQL Server. Client machine will be using
TCP 1433 to connect to the database engine of the server. If the port is not
available, SQL Server will be listening on a different available port.
UDP 1434
SQL Server Browser services compatible port is UDP port 1434 and it's used for
SQL Server named instances. In practical, the services responds to the client
request with the TCP port number for the requested named instance.
TCP 2383
For Analysis Services TCP port 2383 is used.