Can't Connect to Outside IP

Hi there,

So I have a Unity3d version 5.3.2f1 2D game that works great at home. I host/Client one computer then use the second computer upstairs to connect as a Client. Using IP 192.168.xx.xx this works like a charm.

(First Question: When I'm doing this at home, is this essentially a LAN game ??)

If I try to host from the office, (IP 10.10.251.xxx) the client computer at my house can't connect.

I'm guessing this is due to all the routers between the house and my office.

So to...

Can't Connect to Outside IP