Another popular way to connect to the Internet is via a LAN that
uses Ethernet. This gives you a high-speed local network in addition
to Internet access. Fortunately, though, you should have already
configured Ethernet networking during installation so there isn’t
much you need to do now. If you ever need to modify your
configuration, here are the files that you will be interested in:
◼ /etc/init.d/network has things such as your IP address, netmask,
and default route.
◼ /etc/hostname records your hostname.
◼ /etc/hosts also records your hostname and IP address.