“The Domain Name System (DNS) is used by all TCP/IP Internet
software to translate the names that we humans like to use to the
IP numbers assigned to all the computers and devices out on the
Internet and your internal network.”
“Under most flavors of Unix, the most commonly used software
package is Berkley Internet Name Domain, (BIND). This article will
serve as an introduction to obtaining, installing and configuring
BIND under Linux, and will include some pointers on where to go for
more in-depth information.”
“You should be aware that some recent security vulnerabilities
have been uncovered in BIND, so be sure to get at least version
8.23. As of this writing, the latest version is 9.1.1. BIND can be
downloaded from the Internet Software Consortium (ISC) at
http://www.isc.org.”