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Product details
File Size: 4613 KB
Print Length: 642 pages
Simultaneous Device Usage: Unlimited
Publisher: O'Reilly Media; 5 edition (May 26, 2006)
Publication Date: February 9, 2009
Sold by: Amazon Digital Services LLC
Language: English
ASIN: B0026OR2QS
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#306,603 Paid in Kindle Store (See Top 100 Paid in Kindle Store)
I bought this book and its companion cookbook quite a few years ago, when the information was still current. At that time, both of the books were extremely useful to me. But then last year, I pulled them out again to study for my LPIC3-Security exam, and found that ALL security-related DNS info in this book is woefully out-of-date. (And, there's a lot of non-security-related stuff that's also out-of-date.) The newer versions of BIND have introduced a lot of new security features, and have a whole different way of doing business when it comes to both security and keeping things updated, and this book doesn't cover any of that.Otherwise, this book is extremely well-written, and is quite easy-to-read. Ten years ago, I would have cheerfully given this book the full five stars. I look forward to the day when Cricket Liu finally updates this book, so that I can give five stars to the new edition.
The encyclopedia of DNS books, meaning thicker than a phone book.I like the fact that this book is thick but so easy to read and follow along with. If you know nothing about DNS, this book makes it easy to learn about DNS. It starts with the history of DNS and then explains the hierarchy of the DNS tree. A must read if you want to improve your understanding of the internet and what happens under the hood for name resolution.
Foreword: I have been running my own DNS servers on OpenBSD and FreeBSD for about 4 years. All of my previous DNS knowledge was obtained from the man pages and online tutorials.The book is great because the example network used throughout the book is built upon, showing you how to "grow" your DNS with your expanding network. The design and implementation presented is priceless and covers some of my favorite topics: placement of slaves, hidden primaries, building root servers, split views, daisy-chaining, forwarders, partial-slaves, address maintenance issues, etc. The pros and cons of each setup are weighed and best practices are suggested. If you like a generous helping of diagrams, examples, and tables as a learning aid, you won't be disappointed.One specific example of weighing the pros and the cons is presented on page 479 as follows:"Could we have saved a few bucks on hardware by using our external authoritative nameservers as forwarders, too? Sure, but that would have presented a risk." After that statement, they proceed into all the details of "why."There is adequate coverage on security. The authors preach defense in depth. An implementation example includes hiding your masters and only exposing bastion slaves. Securing communications between the masters and slaves is also covered in the security chapter using DNSSEC and TSIG. I think IPSec is another way to add a security layer, but that is probably another book.After reading the book, I started to implement my new DNS infrastructure and found myself referring to the index often. It is fairly consummate, however, I found a few things missing, such as the $GENERATE statement. Also, some of the configuration details were lacking slightly. For example, the order in which ACL elements are processed and how negated elements affect the processing outcome. Another question I had was, what would happen if an ACL name is negated, and what if that ACL contained some negated elements. Well I found my answer by actually trying it and verifying with the canonical reference docs on isc.org.I gave this book five stars because of its effectiveness in presenting the concepts and implementations of DNS using examples, good writing style, tables, and diagrams. If you're looking for the last 4 percent of the diminutive details of DNS, you will find it on isc.org.
If you manage a bind instance, this book is indispensable. There are a number of clear examples of the configuration files, along with insightful and helpful hints that will help keep you out of trouble. Given how easy it is to screw your environment to the floor by messing up these files, you really need this book if you manage bind.
This is a classic. I have edition one and now the current version.
Overall it was an OK book. I am already "competent" with DNS, specifically the BIND9 implementation but I got the book as reference material since the official documentation is a little sparse. The fifth edition (not sure about the others) even covers, albeit a little too briefly, how to deal with reverse lookup zones with subnet masks that do not fall on octet boundaries.
DNS is one of those concepts that is almost kept in mystery in the tech world. The knowledge seems to be passed by word of mouth, and there doesn't seem to be one good repository to go to as an information source. That is not to say that this book is all inclusive, no book can contain every piece of knowledge you need/desire, especially on such a complex topic. This book however does a phenomenal job of demystifying the subject and giving a good, practical understanding of how DNS and BIND work.I would highly recommend this book to anyone, whether it be the new network/sys admin who has just had complex networking needs dropped on his lap, or even the seasoned network admin who needs a good convenient reference on occasion.
A solid reference to those that work in the DNS, Internet world
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