So I setup my bukkit server, followed the tutorials etc. Porwarded my ports and Im pretty sure they are open because I used PFPortChecker to check. and it said both UDP and TCP Ports are Open. (If you need a screenshot of the results please comment down there) My craftbukkit build is currently craftbukkit-1.2.5-R4.0.jar (Latest One) My Modem: NETGEAR DGN2200 But the problem is my friends cannot join with my IP, I'am the only one who can I've tried leaving 'server-properties/server-ip' blank but nothing seems to work, so if you have got the solution to my problem it'll be much appreciated, thank you. If you need a list of my Plugins, be sure to tell me.