Windows Admin Center WinRM not working over VPN

[sysadmin_GLNS]

Hello all, I use Windows Admin Center often to manage my server (OS: Hyper-V Server) and workstations (Windows 10 PCs), and I have WinRM configured for all of them.


However, when I switch to VPN, I can access all my workstations fine, except my server, which returns a WinRM error:

WinRM cannot complete the operation. Verify that the specified computer name is valid, that the computer is accessible over the network, and that a firewall exception for the WinRM service is enabled and allows access from this computer.

I am puzzled as to why WinRM access to the workstations works over VPN, but not the server.


In Powershell, Test-NetConnection to the server over ports 5985 and 5986 works without VPN;
however when the VPN is turned on TcpTest works on 5986 but fails for 5985.


Test-NetConnection to the workstations over ports 5985 and 5986 works with and without VPN!


Now I'm not sure what to do with this information. Any pointers in the right direction would be appreciated!

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