I will probably eventually set up a DMZ, as you suggest, but right now, I'm just experimenting with different configurations, testing content, and trying to learn how to use ISPConfig.
I am set up for external access, and I can view the website throught a proxy server. What I can't seem to do, is configure ISPConfig so that the same website is served through the internal network IP. I want to link the same folder on the webserver to two different IP addresses. I know there's a way to do this my modifying the directives in the httpd.conf file, because I've done it before. I'm hoping there's an easy way to get ISPConfig to set up the same thing.
It may be related, but I'd also like some guidance on why, when and how I would use the subdomain and aliasdomain functions in ISPConfig.