I'm sure it has been discussed here before, but I can not find it :/ Anyway. I've just installed a Virtual OS (Debian with ISPconfig) on one of my old Windows 2003 server (for some testing!) The Windows 2003 server is allready using port 80 for websites, and as I do not have more WAN IP's to give one to the virtual system I need to get Apache2 to run on an other port that 80. I have changed the ports.conf from apache and now it's listening on port 123. When I change the default ports in Vhost_ispconfig.conf (what is set by ISPconfig) and restart apache2, I can access the sites through port 123. Problem now is when I reboot the system, or make a change in ISPconfig the Vhost_ispconfig.conf gets rewritten to it's original (port 80) as it should. What do I need to "hack" in ISPconfig to make it write the port that I want it to use (port 123)?