So i made a new server and i port forwarded it and it doesn't work.. HELP ME EDIT by Timtower: removed full caps title
Make sure in your server.properties you do not touch the server-ip line. Also check that the port is correct in the Cmd box that should pop up on start.
Like this?: How do I know if it's being blocked by firewall ? EDIT by Timtower: merged posts, please use the edit button instead of double posting.
And you might check out portforward.com for full instructions on how to port forward your exact brand, and model of your router