It means that your site isn't hosted on an IP that is shared with other sites. The most common reason to request a dedicated IP is for SSL functionality. Httpd is already listening on port 80 so no other process can listen on that port, but if your software is php or jsp or asp or any of the other languages we support then yes it would be listening for connections on port 80. I don't know exactly what you're needing so it's hard to say. All of our IP addresses, dedicated or shared, are publically accessible unless your clients are in China and then some of the addresses are blocked by their government and some are not blocked, but that is hardly our fault. I've never seen anyone's request to have extra ports opened on the server ever get approved by our root admin, but it doesn't hurt to ask I suppose. However, we install software all the time on the servers at the request of users, but it has to be something that would be useful to a large number of users.