Download Ebook Absolute OpenBSD: Unix for the Practical Paranoid
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Absolute OpenBSD: Unix for the Practical Paranoid
Download Ebook Absolute OpenBSD: Unix for the Practical Paranoid
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Review
"People have been clamoring for an OpenBSD-specific book for years. Michael has stepped up to provide one." -- Theo de Raadt, Founder, OpenBSDI recommend AbsoluteOpenBSD to all programmers and administrators working with the OpenBSD operating system -- UnixReview.coma broad and mostly gentle introduction into the world of the OpenBSD operating system -- Chris Palmer, San Francisco Open BSD Users Group, August 7, 2003a well-written book that hits its market squarely on target -- Slashdot.org, August 14, 2003
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About the Author
Michael W. Lucas is a network/security engineer with extensive experience working with high-availability systems. He is the author of the critically acclaimed Absolute BSD, Absolute OpenBSD, Cisco Routers for the Desperate, and PGP & GPG, all from No Starch Press.
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Product details
Paperback: 528 pages
Publisher: No Starch Press; 1 edition (June 2003)
Language: English
ISBN-10: 1886411999
ISBN-13: 978-1886411999
Product Dimensions:
7.4 x 1 x 9.2 inches
Shipping Weight: 1.9 pounds (View shipping rates and policies)
Average Customer Review:
4.9 out of 5 stars
23 customer reviews
Amazon Best Sellers Rank:
#2,583,539 in Books (See Top 100 in Books)
OpenBSD is lauded for its security features -- this is THE OS to use for serious firewalls or secure web servers and the like. However, it is small and obscure compared to the better known, more popular FreeBSD, and of course there are 10 Linux users for every 1 person who has even heard of OpenBSD.Until now, installing and using OpenBSD required reading numerous man pages and online FAQs and tutorials. OpenBSD's documentation is pretty good, but for the average person who just wants to try it out, it's an awful lot to wade through, with few navigational aids available. And the OpenBSD mailing lists are notoriously unforgiving of anyone who asks questions without having read every pertinent document first."Absolute OpenBSD" is just what this OS needed to make it more accessible to a wider user base. It takes you step by step through installation, configuration, and implementation, and then covers a number of more advanced topics, including no less than three very comprehensive chapters devoted to pf, OpenBSD's own packet filtering program. (OpenBSD uses this instead of ipchains or iptables, which is what you will find on other BSDs or Linux.) It tells you what every service you might want to run (or not) is, and where they are found and how to configure them. It goes through the contents of OpenBSD's /etc directory, file by file.The author has a very straightforward yet humorous writing style, and he neither talks down to the reader nor assumes that you are a SysAdmin and networking god. He does assume that you have some familiarity with UNIX-style OSs and basic UNIX/Linux commands. It also helps if you know a little basic networking -- if you have never even configured your TCP/IP settings on your Linux or Windows box, then you may have a steeper learning curve ahead.If you are completely new to the *NIX world, then starting out with OpenBSD, even using this book as a guide, may be a little too much to take on before you've learned the basics. However, if you are coming from the Linux world, or are familiar with other BSDs (FreeBSD, NetBSD) or UNIX variants, then you will have no trouble learning OpenBSD from this book. If you're a Linux guy who's wondering what's so great about OpenBSD, or a sysadmin thinking of building an OpenBSD firewall, this is the book for you. OpenBSD is not and never will be accessible to the average casual computer user, but if you're not afraid of a command line and willing to learn more about the guts of an operating system, "Absolute OpenBSD" is a fine tutorial and reference guide.The emphasis in this book is on the OpenBSD operating system itself, and what makes it special and unique. There is very good coverage of OpenBSD's unique security features, and what differentiates it from other BSDs and Linux. If you just want to build a firewall, this book is all you need. If you want an introduction to OpenBSD, because you are thinking about using it for your server or workstation(s), this book will give you what you want. If you want to set up a server, this book will give you enough to get your OpenBSD machine set up and ready to be turned into one, but it does not cover setting up sendmail or DNS or Apache or DHCP or the like in great detail -- only what you need to know about setting those services up on OpenBSD. You'll need to go elsewhere for more detailed instructions on individual services. (If you already know how to set them up on another OS, though, then this book will tell you everything you need to know to get them running on OpenBSD.)This is absolutely an excellent guide to OpenBSD, and I found nothing that wasn't covered adequately. It allowed me to install and upgrade my own OpenBSD machine and build a custom firewall for my home network, and I was coming from the Linux world with only a small amount of networking experience. While more OpenBSD books would be nice, this is the one that all future books will be compared against.
Michael Lucas' "Absolute OpenBSD" is a solid introduction to an operating system certainly worth getting to know. Lucas' relaxed tone makes for a pleasurable read and he is able to convey moderately advanced subjects with clear and concise explanations. The book begins with detailed installation coverage, proceeds to system setup and configuration and continues on into basic system administration, security and kernel configuration. In my opinion, the high point of the book, and a high point of the operating system itself lies in the packet filtering program pf. Lucas ends the book with three solid chapters on understanding and configuring the powerful firewall tool pf and provides some useful full configurations in the appendix. I hate to take a star away from a book that is a solid coverage of OpenBSD for a new BSD system administrator, however I felt it necessary for a few reasons, mainly due when I have purchased this book and my personal expectations. The first reason for giving it 4 stars is that this book is currently becoming a bit dated in some sections. The most recent version mentioned in the book is OpenBSD-3.3, as of writing this comment, the current version of OpenBSD sits at OpenBSD-4.9. While the system hasn't been overhauled, it has certainly had some significant additions/modifications since then. Additionally, especially towards the beginning of the book, the author spends a decent amount of time discussing support for systems which were considered legacy at the time of publication (2003) and as such were of little import to a reader such as myself in 2011. Granted, this information would have been of great value for those at the time who had to support legacy systems, or for the situations currently where extremely old systems must still be supported, one would find this information very helpful. As information of general value, however, I feel these sections could be dropped in favor of more recent information. In addition to the outdated information, i noticed a decent amount of typos, however they don't detract from the overall information in most situations. Finally, as stated previously, I had certain desires for this book which it didn't fully meet. These are personal interests though and were likely omitted due to the general nature of the book. Being a security-type, the security of OpenBSD is a huge drawing point for the operating system. While Lucas conveys OpenBSD's security mindset well and provides a solid introductory chapter on OpenBSD security, a more in-depth look would be a welcome addition for a reader like myself. As this book was meant to be an introduction and general coverage of OpenBSD, it is understandable that these topics were only covered briefly as it would likely overwhelm and confuse readers interested in simply implementing an OpenBSD system.In summation, Lucas provides a solid introduction and coverage of implementing an OpenBSD system, while some information has become a bit dated, the book overall retains it's value to this day. An updated 2nd edition with some newer topics would be welcomed and purchased by this reader if it ever becomes available.(Also, as I understand this book has trouble shipping directly from Amazon, I can say that I personally had a good experience with ordering a used copy. The book arrived promptly and in good condition from the distributor which I purchased the book. If you are interested in this book, that may be your best bet as well)Ryan Wagner
I'm no security freak, but I love the OpenBSD concept: security above all. When I took a course in Unix operating systems, I was introduced to OpenBSD, and recommended to purchase this text. Albeit outdated (it covers version 3.2, and OpenBSD is now at 4.0), the book offers an overview of all the basics, including 3 whole chapters on the pf firewall.Because of its general nature, the author, Lucas, does not solely focus on pf, but instead adds flair to an extremely hostile operating system environment. I don't recall ever working with a more difficult system from scratch. Lucas really helped in getting me through some of the more cryptic areas of installation and configuration. The book itself is quite basic, so if you need something specific, like a korn shell book, look elsewhere. His style also makes the book itself a fun read, I must admit, because of his colorful presentation.I've had this book for more than a year now.This may be the most fun textbook-with-no-pictures I've ever read.
My favorite BSD Writer by far.
Good
very good
For those who wants to know more about unix like systems and alsoneed to know more about securing there Openbsd installation for there servers or any other purpose.This book is great. Very well explained. For intermidiate and Advance users.
Realy I bought the book, I didn't have any OpenBSD contact and I bought the OpenBSD CDs to try it and play, and the book arrived before the OpenBSD's CDs and I begun to read, and learned me how to install OpenBSD, When the CDs arrived realy was very easy to install and get my first steeps in this OS.
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