Opening custom port not working in ISPConfig 3

Hi all,

I've installed and configured ISPConfig 3 to work flawlessly on Fedora 10 server. Now I'm trying to open firewall port 3000 for some ruby application in order for it to work through the firewall under System menu and when I try to access the page it simply return an error 'can't establish connection to the server' message.

Any idea how to make this work ?
PS : the ruby script already running and I can access it via localhost

 

What are the outputs of

Code:

netstat -tap

and

Code:

iptables -L

?