To start, here is my OS/Java info: I am running craftbukkit-1.2.5-R4.0.jar, using the command: The top of the server.log file reads: here is the contents of my server.properties file: I am not running any plugins. Okay, so. the problem: This is my first time setting up a minecraft server. In my house, I have a laptop (which I use to play minecraft, as well as do stuff like browse the web / work / etc.), and a linux server (which, until now, I have mostly used as a fileserver and web server). I decided it would be fun to host a minecraft server on my linux box, so that I could play with some of my friends. I followed the instructions to update Java and install craftbukkit. I made sure that port 25565 was open on my firewall (Firestarter), and also followed the instructions located here: http://portforward.com/english/routers/port_forwarding/Linksys/BEFSR41/Minecraft_Server.htm - to forward port 25565. I have several other computers on my network, so I have done port forwarding before. In my case, the local IP of my linux server is 192.168.1.11, and I have previously successfully forwarded http/ftp traffic to that port. In other words, I followed the exact same steps I have previously used to forward other services to my linux box, but with port 25565. I started the server, and then tried to log on with my laptop. First, I typed in the local ip address (192.168.1.11) - it logged in successfully, and I was able to walk around / dig / punch trees / etc. - everything was fine. HOWEVER, when my friend tried to log in from outside the network, she got this error: "Internal exception: java.net.SocketException: Connection Reset" She is able to log in to other servers without error, so I know the problem isn't on her end. I can't figure out what the problem is... The server works when I access it in-network using the local ip address, meaning that java/craftbukkit/etc are all working correctly. This means the error must be somewhere in the port forwarding or in the router. I don't know if I'm missing something really obvious, or what... I'm sorry if this is a stupid question. Any ideas what the problem could be? Is there any further information I could give you to help find an answer? Thanks!