How to verify that port 1433 is running on an Sql server or not?

Question

How to check if port 1433 is open for Sql Server or not? I installed in the linked and inferred rules, checked in the SQL configuration manager, but not sure if it works.

Answer 1

Try the following:

USE master
GO
xp_readerrorlog 0, 1, N'Server is listening on' 
GO

Identify the SQL Server TCP IP Port Used

Answer 2

If the server uses TCP / IP, an easy way is to simply connect to SQL Server and see if it connects. By default, this port is 1433, so this should work:

telnet servername 1433

In most cases this will be appropriate.

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Answer 3

Netstat

netstat -abn

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Answer 4

If TELNET is installed, you can use it TELNET 1433to verify connectivity to the port. Otherwise, the PowerShell command below may do the job.

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