Hello I set up ISPconfig with the Ubuntu perfect server setup. Everything is perfect for my sites that I am running on the outside. I now need to set up an Intranet site (internal). I am a little confused on how to make this happen properly. I need to be sure that the internal site is only visible in my buiding from an internal address (ie:192.168.1.181) - but when you setup a site, it requires a domain? what is the best way to achieve this?