first of all, you should RTFM and use the search button, but since those might not have all the answers i'm not going to be difficult (you lucked out this time, but in general, if you aren't willing to spend a couple minutes searching for a question that has been answered 50 times already, why should we spend the time to give you the answer?). make sure you forward the server's port to your computer in your router configuration (30720 by default), and have other people check if they can see your server, some routers have a bad NAT implementation that will prevent you from seeing your own server on the internet list.