608-831-2396 or 866-352-7108  Page 2 - How IP addresses and
gateways work  To set up the JetDirect card, you will need an IP
address and a subnet mask. If you don’t have a network
administrator or resident computer guru to provide this info for
you, then we will assume that you have a small office or home
network and that person is you.  Below is a picture of a typical
home or small office network.  If you have a DSL modem or cable
modem you will typically have what is called a gateway or
router. The terms gateway and router are often used
interchangeably. In many cases the modem and gateway are
combined in one unit. This device does quite a few things. It
allows you to hook up many, potentially thousands, of devices to
your network. The gateway has two IP address. One is an external
IP address assigned by your ISP (internet service provider), and
the other an internal IP address that is only accessible within
your network. This internal IP address is also called you
default gateway IP address (GW). All compu