Run MSSQL Server Configuration Manager.
Navigate to SQL Server Network Configuration -> Protocols for SQL SERVER. Enable TCP/IP and Named Pipes. SQL server uses port 1433 by default.
Right-click SQL Server Services and choose SQL Server from the pop-up menu. Click Start.
Verify that Microsoft SQL is running.
You can verify this on the Solaris platform by running the netstat -an | grep 1433 command in a terminal window.