Hi there I have successfully installed ISPConfig on my CentOS server, and everything seems to be running smoothly. The only thing so far that I can't figure out even after reading the doc is the firewall configuration. I am running a custom app on my box and the application is listening for incoming traffic on a particular TCP port (example 23450). What I would like to be able to do is block any incoming traffic from the outside world to that port, but let other application on the local machine (aka localhost/127.0.0.1) to access it without problem. Can I configure that with ISPConfig firewall ? I did already started the firewall -seems to be turned off by default and tried to add the port my app is using but no matter what I am doing I can still telnet to that port from the outside world... So I think I am missing a step somewhere. Thank for any help/suggestion!