Telnet is a quite useful connecitivity verification tool, especially during the system set up or troubleshooting. For some reason, mostly security concern, this feature is disabled since Windows Server 2008. But when you want a quick check, it’s really a pain to open the Server Manager and click, click, click… Fortunately we have PowerShell. So here is the one-line command to turn it on:
Add-WindowsFeature telnet-client
And another command to turn it off, before you log-off:
Remove-WindowsFeature telnet-client
Very cool!