The Domain Name System is one of the foundations of the internet. It is the system that allows the translation of human-readable domain names into machines-readable IP addresses and the reverse translation of IP addresses into domain names. This book describes the basic DNS protocol and its extensions; DNS delegation and registration, including for reverse domains; using DNS servers in networks that are not connected to the internet; and using DNS servers on firewall machines. Many detailed examples are used throughout the book to show perform various configuration and administration tasks.

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Spis treści

DNS in Action. A detailed and practical guide to DNS implementation, configuration, and administration eBook -- spis treści

• DNS in Action
  • Table of Contents
  • DNS in Action
  • Credits
  • About the Authors
  • Preface
    • What This Book Covers
    • What You Need for This Book
    • Conventions
    • Reader Feedback
    • Customer Support
      • Errata
      • Questions
  • 1. Domain Name System
    • 1.1 Domains and Subdomains
    • 1.2 Name Syntax
    • 1.3 Reverse Domains
    • 1.4 Domain 0.0.127.in-addr.arpa
    • 1.5 Zone
      • 1.5.1 Special Zones
    • 1.6 Reserved Domains and Pseudodomains
    • 1.7 Queries (Translations)
      • 1.7.1 Round Robin
    • 1.8 Resolvers
      • 1.8.1 Resolver Configuration in UNIX
      • 1.8.2 Resolver Configuration in Windows
    • 1.9 Name Server
    • 1.10 Forwarder Servers
  • 2. DNS Protocol
    • 2.1 Resource Records
    • 2.2 DNS Protocol
    • 2.3 DNS Query
      • 2.3.1 DNS Query Packet Format
      • 2.3.2 DNS Query Packet Header
      • 2.3.3 Question Section
      • 2.3.4 The Answer Section, Authoritative Servers, and Additional Information
      • 2.3.5 Compression
      • 2.3.6 Inverse Query
      • 2.3.7 Methods of RR Transfer via a DNS Packet
      • 2.3.8 Communication Examples
        • • Example of a Nonexistent RR Query and the Answer
          • Example of Communication with a Root Server
          • Example of Communication with the ns1.volny.cz DNS Server
          • An Example of TCP usage
          • An Example Illustrating the use of the nslookup Program to Find Out Communication Content
  • 3. DNS Extension
    • 3.1 DNS Update
      • 3.1.1 Header Section
      • 3.1.2 Zone Section
      • 3.1.3 Prerequisite Section
      • 3.1.4 Update Section
      • 3.1.5 Additional Data Section
      • 3.1.6 Journal File
      • 3.1.7 Notes
    • 3.2 DNS Notify
      • 3.2.1 Notify Message
    • 3.3 Incremental Zone Transfer
      • 3.3.1 Request Format
      • 3.3.2 Reply Format
      • 3.3.3 Purging
      • 3.3.4 Examples from RFC 1995
    • 3.4 Negative Caching (DNS NCACHE)
      • 3.4.1 How Long are Negative Answers Stored in Memory?
      • 3.4.2 The MINIMUM Field in an SOA Record
      • 3.4.3 Saving Negative Reply Rules
    • 3.5 DNS IP version 6 Extension
      • 3.5.1 AAAA Records
      • 3.5.2 A6 Records
      • 3.5.3 Reverse Domains
        • • IP6.INT
          • IP6.ARPA
      • 3.5.4 DNAME Records
    • 3.6 DNS Security Protocols
      • 3.6.1 DNSsec
      • 3.6.2 KEY Record
      • 3.6.3 SIG Record
      • 3.6.4 NXT Record
      • 3.6.5 Zone Signature
      • 3.6.6 Display Data
      • 3.6.7 DNS Protocol
    • 3.7 TSIG
      • 3.7.1 TKEY
    • 3.8 Saving Certificates to DNS
  • 4. Name Server Implementation
    • 4.1 DNS Database
    • 4.2 RR Format
      • 4.2.1 SOA Records
      • 4.2.2 A Records
      • 4.2.3 CNAME Records
      • 4.2.4 HINFO and TXT Records
      • 4.2.5 NS Records
      • 4.2.6 MX Records
      • 4.2.7 PTR Records
      • 4.2.8 SRV Records
      • 4.2.9 $ORIGIN
      • 4.2.10 $INCLUDE
      • 4.2.11 Asterix (*) in a DNS Name
    • 4.3 Name Server Implementation in BIND
      • 4.3.1 named Program in BIND Version 4 System
      • 4.3.2 New Generation BIND
        • 4.3.2.1 Configuration File
          • Configuration File Statements
          • Examples of Name Server Configuration
          • Comments
          • acl Statement
            • address_match_list
          • controls Statement
          • include Statement
          • key Statement
          • logging Statement
          • options Statement
          • Parameters of the options Statement
            • File Specification
            • Boolean Options
            • Forwarding
            • Name Check
            • Access Control
            • Interfaces
            • Zone Transfer
            • Periodic Task Intervals
          • server Statement
          • trusted-key Statement
          • view Statement
          • zone Statement
        • 4.3.2.2 DNS Database
          • $TTL Statement
          • $GENERATE Statement
        • 4.3.2.3 Lightweight Resolver
          • • How does this Mechanism Function?
          • lwres Statement
    • 4.4 Microsofts Native Implementation of DNS in Windows 2000/2003
  • 5. Tools for DNS Debugging and Administration
    • 5.1 Tools for DNS Debugging
      • 5.1.1 Check Configuration Files
      • 5.1.2 named-checkconf Utility
      • 5.1.3 named-checkzone Utility
      • 5.1.4 nslookup Program
        • 5.1.4.1 Debugging Mode
        • 5.1.4.2 Debug Debugging Level
        • 5.1.4.3 d2 Debugging Level
          • Change of the Default Name Server
          • Zone Extract
          • Simulation of Queries from a Name Server
          • Error Messages of the nslookup Program
      • 5.1.5 Other Programs Used for Debugging DNS
        • 5.1.5.1 The dnswalk Program
        • 5.1.5.2 The dig Program
    • 5.2 The rndc Program
      • 5.2.1 Signals
        • 5.2.1.1 HUP Signal
        • 5.2.1.2 INT Signal
        • 5.2.1.3 IOT Signal
        • 5.2.1.4 TERM Signal
        • 5.2.1.5 KILL Signal
        • 5.2.1.6 USR1 and USR2 Signals
    • 5.3 Errors in DNS Configuration
  • 6. Domain Delegation and Registration
    • 6.1 Example 1
      • 6.1.1 Server ns.company.tld
      • 6.1.2 Server ns.provider.net
      • 6.1.3 Server ns.manager-tld.tld
    • 6.2 Example 2
      • 6.2.1 Server ns.company.com
      • 6.2.2 Server ns.branch.company.tld
    • 6.3 Domain Registration
  • 7. Reverse Domain Delegation
    • • • • Server ns.company.com
          • Server ns.provider.net
          • Server ns.ripe.net (authoritative server for a superior domain)
          • Server ns.company.com
          • Server ns.branch.company.com
  • 8. Internet Registry
    • 8.1 International Organizations
    • 8.2 Regional Internet Registry (RIR)
    • 8.3 IP Addresses and AS Numbers
    • 8.4 Internet Registry
      • 8.4.1 Registration of a Local IR
    • 8.5 Delegation of Second-Level Domains
  • 9. DNS in Closed Intranets
    • 9.1 Configuring a Root Name Server on the Same Server (BIND Version 4)
    • 9.2 Configuring a Root Name Server on a Separate Server (BIND Version 4)
      • 9.2.1Configuring a Name Server for the Root Domain
      • 9.2.2Configuring Name Servers for company.com
    • 9.3 Root DNS Server in Windows 2000/2003
  • 10. DNS and Firewall
    • 10.1 Shared DNS for Internet and Intranet
      • 10.1.1 The Whole Internet is Translated on the Intranet
      • 10.1.2 Only Intranet Addresses are Translated on Intranet
    • 10.2 Name Server Installed on Firewall
      • 10.2.1 Translation in IntranetWhole Internet
      • 10.2.2 Translation in Intranet without Internet Translation
    • 10.3 Dual DNS
    • 10.4 End Remarks
  • A. Country Codes and RIRs
  • Index