Hi Someoneelse. I do precisely what you ask about. I have a Balance 20 at both locations. (Actually, I have Surf SOHOs at two more locations as well.) The capability to set up a VPN is already there – you are just missing it. On the Balance 20 go to Network | PepVPN and set up a PepVPN Local ID (just pick a short name for each end). Then, establish a Profile. The end that is set to initiate the connection (Remote IP Address) will constantly attempt to do so until the connection is made. If you lose WAN on either end and it comes back up, the VPN will automatically come back to life. A comment that sounds like I am a shill for Peplink [but am not – just a happy user]: Peplink got this absolutely right, in my view. It “just works.”
I use this arrangement to get at equipment behind non-routable IPs at the distant (VPN) location. For example: I can watch our CCTV system at 192.168.88.88 900 miles away from 192.168.3.7. The only thing I have not been able to do is to is print to the distant printer when specifying it by IP address in Windoze. I suspect I have a Microsoft configuration issue totally unrelated to the Balance 20s.
Side note: The Balance 20s are superb devices “for what they are” – The VPN connection is somewhat bandwidth limited, although it has been increased with the most recent firmware update. VPN speed limitations are set forth on the Peplink web site – no surprises. I have not found it to be a problem, but some have really whined about it. (Comment: If I were Peplink I’d think it reasonable to provide additional capabilities for folks who buy higher in their product line – you pay more, you get more.)
Let us know how it goes!