I want Apache to listen on non-standard ports. Instead of 80 and 443 for http and https, I want it to listen on 10080 and 10443. In the control panel, I went to: System > Server IP addresses > [click on server name] And, then I changed the HTTP Ports from 80,443 to 10080,10443. When I create a new website "xyzzy.net" by doing: Sites > Add new website > IPv4-Address > [the above IP address] I find that the domain configuration file: /etc/httpd/conf/sites-enabled/100-xyzzy.net.vhost has in it: <VirtualHost 22.214.171.124:80> not the 10080 that I would have expected. By the way, the reason I want this is because I'm running the Pound load balancer and reverse proxy because I'm also running Tomcat and other software on this server and it takes care of redirecting URLs on ports 80 and 443 to the appropriate backend application code. Note, this is also useful because in various corporate environments non-standard ports are blocked on web pages, so I need something like Pound to take care of the traffic redirection. What did I do wrong? What do I need to do to get ISPConfig to use the ports that I've specified for that IP address? Is this a bug?