Back in the day we used Hamachi for this. Looks like it's been acquired by LogMeIn (bleh), but perhaps the same functionality is there.
Good luck!
Good luck!
I remember getting other 13yos to install Hamachi so we could play AoM P2P back in 2009 or so, it seemed more than worth it at at the time. Why do you think there'd be friction with your friends to take the time to install an app if you're already taking the time to play games together?