We need to setup a tunnel with ovpn, this will be PKI multi sites, the cloud server will run centos 7 and will be the ovpn server.
Our clients most of them will be MK.
My doubt is this one, my cloud server has just 1 NIC with the public IP my host company give to us.
If we setup ovpn there, do I need to have a LAN in the cloud server to communicate between clients and our server?
I ask this, because most of my installations have the standard WAN/LAN interfaces which I know that works, I run the tunnels and my clients can communicate each other LAN2LAN, but this is my first case I have a server with just 1 NIC and is the WAN

I want to learn from u guys with your suggestion and tips, which always be appreciated, thanks.