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The Concise Guide to DNS and BIND provides you with the technical depth and expert-level information you need to understand and administer DNS and BIND. Domain Name System (DNS) is a distributed Internet directory service. It is used mainly to translate between domain names and IP addresses, and to control Internet email delivery. Most Internet services rely on DNS to work, and if DNS fails, Web sites cannot be located and email delivery stalls. BIND (Berkeley Internet Name Daemon) is an implementation of the Domain Name System (DNS) protocols. This book covers setting up a DNS server and client, DNS domain zones, compiling and configuring BIND, dial-up connections, adding more domains, setting up root servers on private networks, firewall rules, Dynamic DNS (DDNS), subdomains and delegation, caching and name resolution, troubleshooting tools and techniques, debugging and logging, new features in BIND 8.2.2, and it offers introductory information on BIND 9.
Introduction.
About This Book. The Internet Before DNS. DNS to the Rescue. The Versions of BIND. If It's Worth Doing, It's Worth Doing Right.
I. BASIC.
1. DNS Concepts.DNS Is a Hierarchic, Distributed Database. What Is a Domain?
Zones and Delegation. Reverse Zones. Duplication and Distribution of Zones. How Resolution Works.
A Records. Recursion. NS Records. CNAME Records. PTR Records. A Reverse Lookup.
DNS as a Tree.
2. DNS in Practice.The BIND Software.
ISC. Where to Get BIND. Compiling BIND.
Configuring BIND.
named.conf. root.hints. pz/127.0.0.
Testing It All.
ndc: Starting, Restarting, and Reloading BIND. Testing the Zone Files. The Details of DNS Caching.
Resolver Setup.
/etc/resolv.conf. Other Files. Client Resolver.
A Zone.
A Forward Zone. A Reverse Zone. Another Zone.
Subdomains and Delegation. Reverse Delegations for Classless Nets. Secondary Servers.
Adding a Slave Server. Stealth Servers. NOTIFY.
3. Maintenance and Enhancements.More Practical Details. Maintaining and Changing Zones.
How SOA Records Controls DNS.
DNS Round Robin and Load Distribution. The Trouble with CNAME Records. Wildcard Records.
Restrictions on Wildcards. The Problem with Wildcards.
Logs and Debugging.
BINDs Start, Reload, and Reconfig Logging. Logging Channels. Logging Categories. BINDs Default Logging Configuration. Controlling Debug Logging.
Adding More Domains. Contingency Planning.
Internal Redundance. External Redundance. Extended Outages.
Practical Uses of Forwarding.
The Australian Academic and Research Network. Forwarding in Your Network.
Maintaining the root.hints File.
4. Getting a Domain.Top-Level Domains and Their Owners.
Finding the TLD Owners. Finding the Reverse Zone Owners. The whois Database.
Getting the Domain.
Slave Servers. When Your Domain Is Taken.
Paying for Everything.
II. ADVANCED.
5. Using Dig and nslookup.Dig.