I recently started a game for me and my friend to play while he's away at college. I just tested the connection with him, and the test failed. I'm able to connect to 127.0.0.1, and my own ip with ease, but when I try connecting to my friends, it just doesn't work. I'm not using a router, I'm connected with cable modem, Motorola SurfBoard 5101. Any help will be greatly appreciated. Thank you.