Absolute OpenBSD: UNIX for the Practical Paranoid (2nd - download pdf or read online

By Michael W. Lucas

ISBN-10: 1593274769

ISBN-13: 9781593274764

retail quality

The definitive advisor to OpenBSD

Foreword by way of Henning Brauer, OpenBSD PF Developer

OpenBSD, the based, hugely safe Unix-like working approach, is conventional because the foundation for severe DNS servers, routers, firewalls, and extra. This long-awaited moment variation of Absolute OpenBSD continues writer Michael Lucas's trademark uncomplicated and useful method that readers have loved for years. You'll study the intricacies of the platform, the technical information at the back of sure layout judgements, and top practices, with bits of humor sprinkled all through. This variation has been thoroughly up to date for OpenBSD 5.3, together with new insurance of OpenBSD's boot method, security measures like W^X and ProPolice, and complex networking techniques.

You'll learn the way to:
* deal with community site visitors with VLANs, trunks, IPv6, and the PF packet filter
* Make software program administration quickly and potent utilizing the ports and programs system
* provide clients in basic terms the entry they want with teams, sudo, and chroots
* Configure OpenBSD's safe implementations of SNMP, DHCP, NTP, sensors, and more
* customise the install and improve methods in your community and undefined, or construct a customized OpenBSD release

Whether you're a brand new consumer searching for a whole creation to OpenBSD or an skilled sysadmin trying to find a refresher, Absolute OpenBSD, 2d Edition provide you with every thing you want to grasp the intricacies of the world's safest working system.

"The definitive booklet on OpenBSD will get a long-overdue refresh."

-Theo de Raadt, OpenBSD Founder

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Extra info for Absolute OpenBSD: UNIX for the Practical Paranoid (2nd Edition)

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Chapter 5: The Boot Process Covers system startup. Different situations require different startup methods, and we’ll cover them all. We’ll also discuss how OpenBSD starts its component software. Chapter 6: User Management Discusses how to add, remove, and restrict OpenBSD user accounts. Introduction xli Chapter 7: Root, and How to Avoid It Discusses controlling user privileges and permissions. OpenBSD includes powerful tools such as classes and limits, as well as the privilege management tool sudo(8).

Org When the OpenBSD team learns of an OpenBSD security flaw, it posts a bulletin to this list. If you are running an OpenBSD machine on the Internet, you must subscribe to this list. I’ll say more about security-announce in Chapter 10. org This list contains general OpenBSD discussions. While this is the “miscellaneous” list, it still has strict rules, and the community firmly enforces its etiquette. I’ll cover how to usefully post to an OpenBSD mailing list in “Using Mailing Lists” on page 11.

After some political wrangling within the University of California, in 1992, the BSD code was released to the general public under what became known as the BSD license. Introduction xxxi The BSD License BSD code is available for anyone to use under what is probably the most permissive license in the history of software development. The license can be summarized as follows: • • • Don’t claim you wrote this. Don’t blame us if it breaks. Don’t use our name to promote your product. Taken as a whole, this means that you can do almost anything you want with BSD code.

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Absolute OpenBSD: UNIX for the Practical Paranoid (2nd Edition) by Michael W. Lucas

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