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

By Michael W. Lucas

ISBN-10: 1593274769

ISBN-13: 9781593274764

retail quality

The definitive consultant to OpenBSD

Foreword via Henning Brauer, OpenBSD PF Developer

OpenBSD, the based, hugely safe Unix-like working procedure, is well-known because the foundation for severe DNS servers, routers, firewalls, and extra. This long-awaited moment version of Absolute OpenBSD continues writer Michael Lucas's trademark ordinary and useful technique that readers have loved for years. You'll examine the intricacies of the platform, the technical info in the back of sure layout judgements, and most sensible practices, with bits of humor sprinkled all through. This version has been thoroughly up to date for OpenBSD 5.3, together with new insurance of OpenBSD's boot procedure, security measures like W^X and ProPolice, and complex networking techniques.

You'll find out how to:
* deal with community site visitors with VLANs, trunks, IPv6, and the PF packet filter
* Make software program administration speedy and powerful utilizing the ports and programs system
* provide clients simply the entry they want with teams, sudo, and chroots
* Configure OpenBSD's safe implementations of SNMP, DHCP, NTP, sensors, and more
* customise the set up and improve procedures in your community and undefined, or construct a customized OpenBSD release

Whether you're a brand new person searching for a whole advent to OpenBSD or an skilled sysadmin trying to find a refresher, Absolute OpenBSD, second Edition provides you with every thing you must grasp the intricacies of the world's safest working system.

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

-Theo de Raadt, OpenBSD Founder

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

Example text

I am aware of the irony; you don’t need to tell me. 2 Chapter 1 that you will work to improve your own knowledge so that you can make the system meet your needs. Other people make OpenBSD work correctly, and you can, too. That said, you may still find that a problem is quite real, but you can’t be certain that it was caused by OpenBSD itself until you understand correct behavior—not just how you think the system works, but how it really does work. The problem could be an OpenBSD bug, bad hardware, or an errant third-party tool.

Almost every part of OpenBSD has a man page. Viewing Man Pages View man pages with man(1). If you know the section number, enter it before the program name, but the section number isn’t mandatory. For example, to see the man page for the standard network utility ping(8), enter this: $ man ping You’ll get something like this in response. PING(8) OpenBSD System Manager's Manual NAME ping - send ICMP ECHO_REQUEST packets to network hosts 4 Chapter 1 PING(8) SYNOPSIS ping [-DdEefLnqRrv] [-c count] [-I ifaddr] [-i wait] [-l preload] [-p pattern] [-s packetsize] [-T tos] [-t ttl] [-V rtable] [-w maxwait] host DESCRIPTION ping uses the ICMP protocol's mandatory ECHO_REQUEST datagram to elicit an ICMP ECHO_REPLY from a host or gateway.

2. Of course, this doesn’t apply to anything on my blog. Everything I post is the one word of truth. 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.

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

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