By Michael W. Lucas
The definitive advisor to OpenBSD
Foreword by way of Henning Brauer, OpenBSD PF Developer
OpenBSD, the based, hugely safe Unix-like working approach, is established 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 trouble-free and functional strategy that readers have loved for years. You'll research the intricacies of the platform, the technical info in the back of yes layout judgements, and top practices, with bits of humor sprinkled all through. This version has been thoroughly up-to-date for OpenBSD 5.3, together with new assurance 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 fast and powerful utilizing the ports and programs system
* provide clients basically 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 techniques in your community and undefined, or construct a customized OpenBSD release
Whether you're a brand new consumer searching for an entire advent to OpenBSD or an skilled sysadmin searching for a refresher, Absolute OpenBSD, 2d Edition provides you with every little thing you must 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
Read Online or Download Absolute OpenBSD: UNIX for the Practical Paranoid (2nd Edition) PDF
Best unix books
Discover a ton of robust Mac OS X UNIX commands
This convenient, compact advisor teaches you to take advantage of Mac OS X UNIX platforms because the specialists do: from the command line. attempt greater than 1,000 instructions to discover and get software program, display screen process overall healthiness and protection, and entry community assets. follow the talents you examine from this publication to troubleshoot networks, lock down safeguard, and discover virtually whatever you care to understand approximately your Mac OS X system.
Expand your Mac OS X UNIX services in those and different areas:
- utilizing the shell
- discovering on-line software program
- operating with records
- fidgeting with tune and photographs
- Administering dossier platforms
- Backing up info
- Checking and dealing with working strategies
- getting access to community assets
- dealing with distant process management
- Locking down defense
This IBM Redbook takes an insightful examine the functionality tracking and tuning instruments which are supplied with AIX 5L. It discusses using the instruments in addition to the translation of the implications in lots of examples. This e-book is intended as a reference for approach directors and AIX technical help pros to allow them to use the functionality instruments successfully and interpret the outputs while examining AIX approach functionality.
Deal with your organization’s naming structure successfully, from the administrative/policy facet all through to the technical DNS and nameserver implementations. This sensible ebook takes you thru the basics—the anatomies of domains and DNS requests—and covers DNS and area concerns from a number of views, together with procedure, defense, and highbrow estate.
LPIC-1/CompTIA Linux+ Certification All-in-One examination consultant, tests LPIC-1/LXO-101 & LXO-102 Get whole insurance of all of the pursuits incorporated at the LPIC-1 and CompTIA LXO-101 and LXO-102 checks inside of this entire source. Written by means of a Linux specialist and know-how coach, LPIC-1/CompTIA Linux+ Certification All-in-One examination advisor comprises studying targets at first of every bankruptcy, examination counsel, perform examination questions, and in-depth causes.
- System Performance Tuning (Nutshell Handbooks)
- Linux Network Administrator's Guide
- Implementing CIFS: The Common Internet File System
- IBM Certification Study Guide AIX Installation and System Recovery
- Web Host Manager Administration Guide
- Exploring the JDS Linux Desktop
Extra info for Absolute OpenBSD: UNIX for the Practical Paranoid (2nd Edition)
Others really go wild and offer a grammatically incorrect and technically vague manual page. The OpenBSD community expects the documentation to be both complete and accurate. The manual pages for system and library calls are extensive, even when compared to other BSDs, and include discussions on usage and security. Documentation errors are considered serious bugs, and are treated as harshly as any other serious bug. This might sound extreme, but in its own internal audits, the OpenBSD team has found any number of instances xxxvi Introduction where programmers used a library interface exactly as recommended in the manual page, but errors in the manual page made the usage dangerous or insecure.
I assume you’re familiar with basic commands, such as tail(1), chmod(1), ping(8), and so on, and that you know why each command in this list includes a number in parentheses after the name. We’ll discuss many programs that you might already be familiar with, but that might be slightly different in OpenBSD. xl Introduction For maximum benefit, you should install OpenBSD on a dedicated machine. OpenBSD can coexist with other operating systems or run in a virtual machine, but if you’re going to use OpenBSD in a production environment, you should run it on its own.
This might seem contradictory, but in truth, it means that the person running the computer didn’t understand computer security. OpenBSD has many integrated security features, but you cannot assume that these features secure everything running on the system. That’s just not possible. No operating system can defend itself against operator error. An operating system can protect itself from software problems to a limited extent, but ultimately, the responsibility for security is the administrator’s.
Absolute OpenBSD: UNIX for the Practical Paranoid (2nd Edition) by Michael W. Lucas