|If you google "Gibson Research Shield's Up" you can use that to scan your external connection to see what ports (if any) are open.|
There are only 4 possibilities here:
1) Your router is broken and can't port forward
2) You haven't configured the port forward correctly on your router
3) Your game server isn't "listening" for connections properly (ie: not configured correctly)
4) Your ISP is blocking
Have you called your ISP to ask them if they're blocking that port?
It matters not how straight the gate,
How charged with punishments the scroll,
I am the master of my fate;
I am the captain of my soul.