A comprehensive and practical guide to DNS implementation, configuration, and administration Technically detailed with a comprehensive guide practical solutions for configuration and administration of DNS servers DNS Extensions Covers, delegates, and registration In Detail Domain Name System is one of the foundations of the internet. This book describes the basic DNS protocol and its extension, the delegation of control and registration, including domain to reverse; using DNS servers on the network is not connected to the internet, and using DNS servers on firewall machines. Many detailed examples are used throughout this book to show perform various configuration and administrative tasks. What you will learn from this book? This book covers all the basic and advanced use DNS: Chapter 1 introduces the basic concepts of DNS, such as domain and subdomains, domain naming syntax, domain reverse, zone, query, resolver, name server, the server forwarder. Chapter 2 describes the protocol control, focusing on query DNS. Includes a sample query and the answer is no RR, communication with the server root, and TCP and UDP DNS queries. Chapter 3 describes extensions to the protocol of DNS, including DNS Update, DNS Notify, Incremental Zone Transfers, Negative caching, DNS IPv6 Extension, DNSsec, and TSIG. Chapter 4 discusses the implementation of name servers, focusing on Bind, version 4, 8, and 9. Chapter 5 includes tuning control and administration and tools, such as name-checkconf, named-checkzone, nslookup, dnswalk, digging, and rndc. Chapter 6 focuses on the delegation of control from primary to secondary servers. This includes configuring the root name server on a separate server (BIND 4) and configure the name server for the domain root. Chapter 10 includes a database shared control between the Internet and intranets, as well as having a separate server. Who is this book written for? This book is for system administrators and network architects who want to learn how to run and configure DNS servers.