openvpn client

I use Proxmox as an XFCE-based workstation, following these instructions: https://pve.proxmox.com/wiki/Developer_Workstations_with_Proxmox_VE_and_X11 I need to be able to connect to an OpenVPN server with TOTP or Yubikey authentication so I'd like to be able to use the GUI to connect. I...

I want to setup a VM with all Traffic going through a VPN Tunnel, without having to set anything up on the Guest. So the final setup should be something like this: LAN -> vmbr0 -> other VMs -> OpenVPN Tunnel -> vmbr1 -> VM but I can't figure out how to setup OpenVPN to do this, as I...