I posted a while back about setting up an Xserve. My teacher did end up getting it set up, and now he's having me help him with a few things. I'm starting to learn more about how having a server works, but one thing I'm curious about is the web server. I got the Xserve's web server turned on, so other computers on the network can access its ~/Sites folder (or whatever folder I specify in the server settings) by typing its IP (the local one, i.e. 172.16.etc.) into Safari, but can people anywhere access it, like with the server's external IP? I think that's what my teacher wants; he wants to have his home page and stuff on his server, rather than the school's, as the school's PC server has been hacked/virused once or twice this school year already. So how do I get the server's external IP, if that's indeed what I need to do here?