Thread: Request Help?

So i have this problem with my Cpu which i cannot figure out,

It is about this:

When i have completed a server and change my Localhost ip's to my no-ip it keeps giving me the same problem over and over.

Which is:

The client won't connect to the source. When i change the no-ip back to the Localhost it does nothing. The Client just won't connect to the source anymore.

No errors at all. Some friends of mine have taken a look and couldnt figure out what is wrong either.

It doenst matter what kind of server it is. I have been working with 317's and 508's.

If you guys have any idea what can be wrong just let me know because this problem just won't go away.

Also another problem which can be related to the first problem. When changed the ip's to my No-ip and Port 43594 open. It still isnt letting anyone connect to the source.

Additional information:
Port 43594 is open.
Java version:jdk1.7.0_04