<DIV><P style="MARGIN: 0in 0in 0pt">Providing a complete survey of DNS (Domain Name System) servers, this reference outlines the most suitable types of servers for varying scenarios. Addressing performance and security issues, this resource describes in detail the ideal scenarios for each server. Additional topics discussed include how DNS information can be stored in LDAP (Lightweight Directory Access Protocol) directories or SQL databases as well as how to construct robust DNS systems.</P></DIV>