Functionality for an admin to terminate a users VPN session

**Is your feature request related to a problem? Please describe.**
I can find no functionality for an admin to terminate a users VPN session.

**Describe the solution you'd like**
I would like to "kick" a user/device from his/its VPN Session, effectively cutting the connection without deleting the device or disabling / deleting the user.

**Describe alternatives you've considered**
None besides deleting device or disabling / deleting user which is a little too harsh.

**Additional context**
At times I (admin) would like to reject any incoming VPN Connections for a certain location and also terminate all existing connections. I can find no way to do so, besides powering down whole components.