Since Windows 8.1 and Windows Server 2012 R2, Microsoft released Powershell 4. A new cmdlet can be use to troubleshoot network connections issues : Test-NetConnection.
With Windows version older than Windows 8.1, you must install the Telnet client to test if a specific port is open on a remote host. Now, we have a built-in tool!
Let’s see how to use this cmdlet: