Host Name Mapping
The most important decision related to networking is how host name mapping is implemented on your system in Internet Services ARPA. Three techniques are available for host name mapping:
Berkeley Internet Named Domain (BIND)
Network Information Service (NIS)
UNIX file /etc/hosts
The most common and simplest way to implement host name mapping is with /etc/hosts, so I cover this technique in the next section. Keep in mind that there are probably networking manuals for your UNIX variant devoted to many networking topics including NFS, ARPA, and others. These manuals serve as a good reference material if you need to know more about networking than is covered here.
Using the /etc/hosts file, as you are about to see, becomes very difficult ...
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