This is the first book to survey the commonly-available DNS servers. It helps the reader choose the most suitable server for their site or application.

It addresses performance and security issues, and describes the different scenarios where each server is particularly useful.

It explains how DNS information can be stored in LDAP directories, or SQL databases, which lets the reader built robust DNS systems, that can also be managed by multiple, distributed, system management staff.

It also describes a few specialized DNS servers designed for some unusual purposes.