Ebook Kerberos: The Definitive Guide
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Kerberos: The Definitive Guide
Ebook Kerberos: The Definitive Guide
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Kerberos, the single sign-on authentication system originally developed at MIT, deserves its name. It's a faithful watchdog that keeps intruders out of your networks. But it has been equally fierce to system administrators, for whom the complexity of Kerberos is legendary.Single sign-on is the holy grail of network administration, and Kerberos is the only game in town. Microsoft, by integrating Kerberos into Active Directory in Windows 2000 and 2003, has extended the reach of Kerberos to all networks large or small. Kerberos makes your network more secure and more convenient for users by providing a single authentication system that works across the entire network. One username; one password; one login is all you need.Fortunately, help for administrators is on the way. Kerberos: The Definitive Guide shows you how to implement Kerberos for secure authentication. In addition to covering the basic principles behind cryptographic authentication, it covers everything from basic installation to advanced topics like cross-realm authentication, defending against attacks on Kerberos, and troubleshooting.In addition to covering Microsoft's Active Directory implementation, Kerberos: The Definitive Guide covers both major implementations of Kerberos for Unix and Linux: MIT and Heimdal. It shows you how to set up Mac OS X as a Kerberos client. The book also covers both versions of the Kerberos protocol that are still in use: Kerberos 4 (now obsolete) and Kerberos 5, paying special attention to the integration between the different protocols, and between Unix and Windows implementations.If you've been avoiding Kerberos because it's confusing and poorly documented, it's time to get on board! This book shows you how to put Kerberos authentication to work on your Windows and Unix systems.
Product details
Paperback: 274 pages
Publisher: O'Reilly Media (September 5, 2003)
Language: English
ISBN-10: 9780596004033
ISBN-13: 978-0596004033
ASIN: 0596004036
Product Dimensions:
7 x 0.6 x 9.2 inches
Shipping Weight: 13.4 ounces (View shipping rates and policies)
Average Customer Review:
4.1 out of 5 stars
16 customer reviews
Amazon Best Sellers Rank:
#580,992 in Books (See Top 100 in Books)
I'm still looking for a more recent book like this. There's a lot of useful learning-curve information, but you better be technically savvy and already an experienced Linux user. It's not for Newbies unless you come from another similar technology, such as the Windows world, or Networking. Otherwise, there's way too much under the hood you'll have to just take on faith. The book makes it seem easy, but unfortunately, there's some roadblocks with later OS's. You'll need to use older distros to make all these examples work as is.There's also a void where it could explain how to correctly add an app server to the KDC. There's so little info there that I had to resort to Google. I was totally confused between using DNS and Kadmin to manage principles.Anyway, the book helped me a lot, it just wasn't all I needed. Outside research and translations are needed by now.
First I would like to justify my 5 star rating. This book helped me out of a nasty multi-homed host and DNS problem when no other source could. Without this book I would have been troubleshooting this issue for days. I feel the book has paid for itself.However, I wouldn't consider this "The Definitive Guide." It lacks documentation on the krb5.conf configuration file. I found myself referencing the krb5.conf(5) man page for additional info. Also, the documentation that comes with Heimdal is a very good good source for configuration settings.Another deficiency is the GSSAPI coverage. I did have some trouble setting up my GSSAPI aware SSH with Kerberos. I found myself digging through the ssh man pages and doing some trial and error. Chapter 7 discusses Kerberos enabled applications. SSH is covered there, but I felt the GSSAPI aspect was lacking. Although the author mentions that GSSAPI is not specific to any authentication method and is somewhat out of place in a Kerberos book, I feel this is where the author could have went the extra mile and claimed the right to the title "The Definitive Guide." There are many Kerberized applications today not mentioned in Chapter 7. It would be nice to see a second edition that covers them.What this book has that you will not find in any other single source is comprehensive coverage of the history, protocols, and implementation of Kerberos complete with diagrams. From a security standpoint, this will really help you understand what is going on in your network. For example, when setting up my firewall rules and NIDS, I really had a grasp on what traffic was going where and what needed to be blocked/detected.Chapter 6, Security, is very comprehensive and outlines various root compromises, dictionary and brute-force, replay, and man-in-the-middle attacks. It also details the importance of pre-authentication in Kerberos V as well as best practices to protect your key distribution center (KDC).My Kerberos network is a 10 host homogeneous OpenBSD network running the Heimdal Kerberos V version 0.7.2. Although this book covers the older Heimdal 0.6, it was still very relevant. It also covers the MIT 1.3 implementation (MIT is currently at version 1.6.3). Although this book was published in 2003, it is still worth its price brand new in 2008.
Not really the author's fault, the world has changed a lot since this book was written. The first couple chapters are a good run down on the Kerberos protocol & it's various flavors but then it's age starts to show. If you're the kind of person who is compiling your client security from source you probably need to get your hands on documentation that's more up to date. Does not really tell you much about using SRV records, cross realm auth, leveraging it if you're on Active Directory etc. The writing tends to make the technology sound more difficult to understand than it actually is.When it came out this was almost certainly a 5 star book. It's age, not it's content is the problem.
Great intro to Kerberos. If you were curious how what the magic sauce behind Kerberos is, you will find out by reading this book.
This book is a rather complete technical overview of Kerberos. It starts with a technical overview, which is a big must to be able to configure and debug a Kerberos system. It then jumps to implementation and then ends with integration.The overview is rather short, but was sufficient to help me install successfully a Heimdal system on my BSD network. I would have like more informations on how to integrate Windows Vista and XP to Heimdal, but the book falls short on this.Overall, I strongly recommend this book to anyone who needs to install quickly and maintain a Kerberos system. No quick tutorial would be enough and «Kerberos: The Definitive Guides» makes it as short as can be.
Awesome explanation of how Kerberos works.
I came away from this book with a better understanding of how Kerbereos works, but with no new information on using or administrating it.
I purchased this book to assist in integrating Linux authentication with Active Directory. It provided about 90% of the information I needed, the rest came from the web. Offers a concise overview of Kerberos, pretty good coverage of interaction with Active Directory, and some great information on inter-realm trusts that was hard to find via Microsoft. All this talk of AD aside, plenty of high quality information here for the Open Source community.
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