I'm trying to install a java program on a server that I want people to be able to play over the internet. Lets say I want to run my server on computer 220.127.116.119 on port 5678. From the same computer I can run my client program and get to the server on port 5678. However, from another computer I can't. I suspect that the problem is one of security and I don't know how to make port 5678 accessible to outside computers. Any idea how to make this work? Thanks for the help.