Quote from colemish
So I did have a vanilla server running on 25565 so when I made this bukkit server I couldn't use it. I've tried believe me. So i use 25575, and I deleted the other server so what am I doing wrong? That is my internal ip minus the :25575 which is my port so what do I do?
You can change the default port of your server to 25575 if you want by going into your server folder and opening the server.properties file up in notepad. There will be a line that says server-port=25565 just change that to 25575 and then SAVE the file before closing it. When you restart your server it will now look for traffic on 25575 instead of 25565.