I have made a basic online game for me and a friend to play whilst at work, the game works from our home pcs (single computers on the internet) but at work it doesn't work.
Im assuming its because our work computers are on networks which connect to the internet, so my question is how do I identify a specific computer on a network with an IP address.

I had a look at subnets but it confused the hell out of me, thanks for any help!