Thanks for all the help!
I'm the "Techie" guy part time at this place so I really appreciate the help. I've had to learn a bunch about networking and the way servers are setup. Most of the time, I'm shooting from the hit cause it's not really my background.
I was reading on another site where people were saying it was possible to connect to the domain by changing the router's forwarding addresses and that's what I was trying to recreate.
The VPN seems like an obvious solution that I overlooked.