The Software Behind the System
The software that runs the DNS is composed of two main parts:
the nameserver software, often referred to as "named", and the
resolver code. The nameserver software, appropriately enough,
runs on nameservers, and stores zone information and answers
queries. The resolver code, in some form or another, is ideally
present on all machines connected to the Internet, and queries
nameservers for that machine in order to determine IP addresses
and other information. The resolver code is usually incorporated
into the TCP/IP software of the machine.
The most popular implementation of DNS software is BIND
(Berkeley Internet Name Domain), which includes a nameserver
and a resolver library for the UNIX operating system. Most
UNIX systems come with BIND. The latest non-beta can be
ftped from
ftp://ftp.isc.org/isc/bind/src/cur
and information on the beta version can be found at
http://www.isc.org/isc/bind.html.
Last modified: April 10, 2003 02:58:41 UTC
David Simmons
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