Home computer sees filemaker host on work computer - no VPN - How?

Discussion created by pruppert on Feb 24, 2017
Latest reply on Feb 25, 2017 by pruppert

So I made this unexpected discovery that my home Mac can see and open databases that are open on my work Mac even though I am not VPN'd into the work network. I was surprised to see this since the home and work Macs are obviously not on the same network. Does anyone know how this is possible? Is it via Back to My Mac or something?