Remote Shell in Exchange Server 2010/2013 enables you to manage your server running Exchange 2010/2013 from a remote computer, either on your network or from the Internet.
You can enable or disable a user’s ability to connect to an Exchange server using remote Shell. To enable remote Shell for a user, set the RemotePowerShellEnabled parameter to $True using the Set-User cmdlet:
Set-User <user> -RemotePowerShellEnabled $True
To disable remote Shell for a user, set the RemotePowerShellEnabled parameter to $False using the same Set-User cmdlet:
Set-User <user> -RemotePowerShellEnabled $False