Determining the IP Address, Subnet Mask, and Gateway

The various network settings installed on a server come from the network environment. If you have an AirPort, Linksys, or other device guarding your network and splitting your IP address so others can use it, then you likely have full control over what settings you use on the network. If you are installing OS X Server into a much larger environment, then you likely do not have control and need to obtain the correct settings to use from a network administrator.