The Domain Naming System (DNS) is a glorious thing. It takes familiar Internet network and
machine names (like "amazon.com") and converts them to Internet Protocol (IP) addresses
(like "208.35.218.15") that are meaningful to routers and therefore useful for identifying
the machine you want to reach. What's amazing is that DNS enables someone in Germany to refer,
by name, to a computer in Mongolia even if no one in Germany has ever accessed the distant
machine before. It's pretty much self-configuring, too: No human effort in Germany is necessary
to make the Mongolian machine reachable by name. DNS and BIND explains how DNS works better for
this than any other piece of documentation, printed or otherwise. The work of Paul Albitz and
Cricket Liu, now in its fourth revision, has long been considered a classic among systems
administrators and network architects, particularly those with a Unix bent. The fourth edition
is mainly an update: The authors have added coverage of incremental and conditional zone
transfer with BIND's new NOTIFY features, as well as of Transaction Signatures (TSIG), and
DNS Security Extensions (DNSSEC). Sections on firewalling and DNS for IPv6 addresses have been
expanded. Throughout, Albitz and Liu maintain their impeccable style, combining text and
illustrative listings into an educational whole. --David Wall

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