Not able to access Remote computer's Radius, VPN details

Hi Guys,

Am not able to access the below commands,

Get-RemoteAccess
Get-RemoteAccessRadius
Get-VpnAuthProtocol

Am running these commands on my source server to access my destination server's Radius server and VPN server information.

The above commands are recognizable in my source server itself. Do i need to run any commands before running the above Get-* commands.

Please suggest.

Thanks