How to check Port 1433 is working for Sql Server or not?

Question

How can I check whether port 1433 is open for Sql Server or not? I have set in bound and out bound rules, checked in SQL config manager but not sure whether it is working.

Answer 1

If TELNET is installed, you could use TELNET 1433 to verify port connectivity. Otherwise, the PowerShell command below can do the job using a .NET TcpClient:

$server="yourserver"; $port=1433; echo ((new-object Net.Sockets.TcpClient).Connect($server,$port)) "$server is listening on TCP port $port";

Newer versions of PowerShell include a Test-NetConnection cmdlet to facilitate testing ICMP and port connectivity. Example invocation from a Windows command prompt:

powershell -Command "Test-NetConnection -ComputerName 'yourserver' -Port 1433"