Open VPN Tun setup

NethServer Version: 6.9
Module: Open VPN

I’ve run into some issues running bridged tap mode on our VPN Server and it has been advised to use Tun instead.

the current VPN Server is running 1 network card. i’ve read quite a bit of documentation but i seem to be missing some information on network setup.

do i need 2 cards or can i just re configure the current Server to use Tun/Routed with 1 nic?