I have cellular devices that are capable of OpenVPN. However the cellular connection is internet only, meaning they can go out to the internet but I can't connect to them remotely. I would like to communicate from 1 Cell Modems ethernet network to another cell modems ethernet network. I assume I can setup a OpenVPN server on my home network for these 2 cell modems to point to, I'm just not sure what steps I need to take so I can achieve what I'm asking for. Please see below for crude network diagram.
