25565 port closes when others connect?

I recently made a Bukkit Minecraft server, i ported it forward but it only let people on my wifi connect, so i made inbound rules in my firewall allowing public and private profiles with both protocols UDP and TCP. I checked to see if the port had opened with a port opened and it said it had, when others went to join however they said that it wasnt connected at all. i again went back to check if the port was open and it said that it was not, even though it wqas open five seconds earlier, upon inspection of my server, it says exactly this "[SERVER] Reached end of stream for /198.***.**.***[INFO] /198.***.**.***:***** lost connection. " it gives this message each time I restart my server (at which time, the port is open) and then something outside my local network connect to it(when at that point it closes). Don't think that i know what im doing, i have absolutely no idea why its not working. My ativirus is AGV if that matters. and Im running widows 7.
any help would be appreciated.
*the numbers are stared out because i dont know which numbers i need to not give people*

 

xYourFreindx Have you set up a static IP?

In server.properties, is the line 'server-ip=' empty? If not, delete IP.