I've been trying to find this answer for a while but being as the game is so old and both Diablo 2 and 3 are out I get mostly sites directed towards them.
Anyways my cousin and I are retro gamers primarily. We enjoy the classic games so much that we continually play them. However for whatever reason if one of us trys to host a multiplayer diablo 1 game on battle.net the other cannot join. We have tried it both ways, me hosting and him joining and him hosting and me joining both of us in both cases receive a latency is too high. However other people have successfully joined my game and his as well, we jsut cannot join each others. The necessary ports for the game are opened and we have more adequate internet connections. Can someone please give a tutorial on how to fix this issue?