"Hiding beneath the surface of your web browser, email and
instant messaging lies a phone book for computers on the Internet.
We call it Domain Name System or DNS. It looks up the names of
other computers and calls them to chat, shake hands or whatever PCs
do with their own kind.
"Aside from hiding beneath hundreds of millions of people's
awareness, some people know that DNS seems to like Linux. In fact,
they're sort of made for each other. You can get Linux for free and
the software for DNS comes packaged with Linux distributions and
it's also free..."