This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
The format is the same that it always is: http://18.104.22.168:88/, where "22.214.171.124" is the IP address, and "88" is the port number (optional if it's 80). If the machine has a network name then you can use that instead of the IP address.
It doesn't matter from which machine you're trying to access the server - the URL is the same for all clients.