Introduction to the Pipeline
How the Pipeline establishes connections
1-10
Preliminary January 30, 1998
Pipeline Start Here Guide
the IP address automatically. Once connected, your computer became a part of
your ISP’s network. When using the Pipeline, you need to configure your
computer’s TCP/IP settings to use the IP address of the Pipeline as the default
gateway. This is a significant change. Before, your computer became a part of
your ISP’s network, but by connecting a Pipeline to your computer over Ethernet,
you now have your own network, and your Pipeline is your network’s gateway to
the wide area network.
You still might need some of the network services your ISP provides, such as:
•
A Dynamic Host Configuration Protocol (DHCP) server, which assigns IP
addresses (and other configuration settings) to hosts that don’t have a unique
IP address on the remote network.
•
A Domain Name System (DNS) server, which lets you use names, rather
than IP addresses, to reach destinations on the Internet, or in a TCP/IP
network.
If you previously connected to an ISP using Dial-up Networking, your TCP/IP
settings need to be changed. For an example of how to set up TCP/IP, see
“Setting up a TCP/IP network” on page A-1. For more information about DHCP
and DNS, see the Networking Glossary on the Pipeline Companion CD.
Using dynamically assigned IP addresses
If you are connecting to the Internet and do not have permanent IP addresses, set
up private IP addresses on your local network (as explained below), and use a
dynamically assigned IP address when signing onto the Internet by enabling the
Network Address Translation (NAT) feature of the Pipeline, as described next.
Note:
If you have your own IP addresses to use when connecting to your
primary remote destination, such as your corporate LAN, be sure to use them. If
you want to obtain dynamically assigned IP addresses for a second connection,
such as to an Internet Service Provider, you can turn NAT on each time you need
to use it.
Setting up private network addresses
An IP address consists of four sets of numbers separated by dots, as in
111.111.111.111. Each set of numbers is called an octet. Generally, an octet can
have a value from 0 to 255. Different classes of IP addresses have rules about
