How to access an OpenVPN client from LAN

[peterlinuxgeek]

Hi All,

I have a somewhat unusual request. My internal LAN is behind a pfSense running multiple OpenVPN servers.

I have an old PC running FreeNAS that I would like to put that somewhere on the internet (no static IP and behind a router)

I managed in the past to install an OpenVPN client on this FreeNAS PC and make a connection - hopefully I can get this working again. (It will connect to an OpenVPN server exclusively for this purpose)

But… once that is done I would like to be able to have the computers in my LAN find their way to the FreeNAS through the VPN... (= the other way around)

FreeNAS will be setup as a time-machine - my MACs need to access it no matter where on the internet the FreeNAS is...

I lacking some knowledge in how to do that last step - if possible.
I assume I need a special route on the home pfSense and make sure the FreeNAS always gets the same tunnel IP ...?

Tips / ideas are appreciated!

Thanks

Peter