This book is a complete guide to the Internet's Domain Name System (DNS) and the Berkeley Internet Name Domain (BIND) software, the UNIX implementation of DNS. In this second edition, the authors continue to describe BIND version 4.8.3, which is included in most vendor implementations today. In addition, you'll find complete coverage of BIND 4.9.4, which in all probability will be adopted as the new standard in the near future.DNS is the system that translates hostnames (like "rock.ora.com") into Internet addresses (like 192.54.67.23). Until BIND was developed, name translation was based on a "host table"; if you were on the Internet, you got a table that listed all the systems connected to the Net and their addresses. As the Internet grew from hundreds to hundreds of thousands of systems, host tables became unworkable. DNS is a distributed database that solves the same problem effectively, allowing the Net to grow without constraints. Rather than having a central table that gets distributed to every system on the Net, it allows local administrators to assign their own hostnames and addresses and install these names in a local database. This database is automatically distributed to other systems as names are needed.In addition to covering the basic motivation behind DNS and how to set up the BIND software, this book covers many more advanced topics, including using DNS and BIND on Windows NT systems; how to become a "parent" (i.e., "delegate" the ability to assign names to someone else); how to use DNS to set up mail forwarding correctly; debugging and troubleshooting; and programming. Assumes a basic knowledge of system administration and network management.

DNS and BIND

Computers & Technology

Cricket Liu

Paul Albitz

Networking & Cloud Computing

O'Reilly

DNS and BIND discusses one of the Internet's fundamental building blocks: the distributed host information database that's responsible for translating names into addresses, routing mail to its proper destination, and many other services. As the authors write in the preface, if you're using the Internet, you're already using DNS -- even if you don't know it.The third edition covers BIND 4.9, on which most commercial products are currently based, and BIND 8, which implements many important new features and will be the basis for the next generation of commercial name servers. It also covers topics like DNS security (greatly improved with BIND 8.1), asynchronous notification of changes to a zone, dynamic updates, and programming with Perl's Net::DNS module.Whether you're an administrator involved with DNS on daily basis, or a user who wants to be more informed about the Internet and how it works, you'll find that this book is essential reading.Topics include:
<ul>
<li>What DNS does, how it works, and when you need to use it</li>
<li>How to find your own place in the Internet's name space</li>
<li>Setting up name servers</li>
<li>Using MX records to route mail</li>
<li>Configuring hosts to use DNS name servers</li>
<li>Subdividing domains (parenting)</li>
<li>Securing your name server: restricting who can query your server, preventing unauthorized zone transfers, avoiding bogus name servers, etc.</li>
<li>Mapping one name to several servers for load sharing</li>
<li>Troubleshooting: using nslookup, reading debugging output, common problems</li>
<li>DNS programming, using the resolver library and Perl's Net::DNS module</li>
</ul>

Dns And Bind

O'Reilly & Associates

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Books by Paul Albitz