Installing SQL Server 2008 R2 1433 port in windows server 2008 is not enabled

  
        

The default port for SQL Server is 1433, but sometimes you can't connect to port 1433. Check if port 1433 is enabled:

Start –>Enter cmd –> Enter –>telnet localhost 1433-> A black screen appears on the carriage return, indicating that the local port 1433 is successful.

or

Start –>Enter cmd –>Enter –>netstat -an

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