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

By Michael W. Lucas

retail quality

The definitive advisor to OpenBSD

Foreword by way of Henning Brauer, OpenBSD PF Developer

OpenBSD, the based, hugely safe Unix-like working procedure, is familiar because the foundation for severe DNS servers, routers, firewalls, and extra. This long-awaited moment version of Absolute OpenBSD keeps 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 yes 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 process, 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 quickly and potent utilizing the ports and applications system
* provide clients simply the entry they wish with teams, sudo, and chroots
* Configure OpenBSD's safe implementations of SNMP, DHCP, NTP, sensors, and more
* customise the set up and improve strategies on your community and undefined, or construct a customized OpenBSD release

Whether you're a brand new person trying to find an entire creation to OpenBSD or an skilled sysadmin searching for 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 ebook on OpenBSD will get a long-overdue refresh."

-Theo de Raadt, OpenBSD Founder

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

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The SGML sources are located in the /usr/share/man/sman* directories. Each directory corresponds to a section of the manual. Since . . The passwd topic shows the different man command-line arguments because passwd(1) is a command and passwd(4) is a system file. The following example lists all man pages named passwd: # man -l passwd passwd (1) -M /usr/share/man passwd (4) -M /usr/share/man # Note that both man pages are listed. In addition, an appropriate -M command-line argument is displayed to show the location of the man pages.

System . . Concepts . . . passwd [ -r files ] [ -d | -l ] [ -w warn ] [ -x max ] name passwd -r ldap passwd -r nis passwd -r nisplus [ -egh ] passwd -r nisplus -s passwd -r nisplus [ -D domainname ] passwd -r [ -x max ] [ -egh ] [ -f ] [ -egh ] [ -n min ] [ name ] [ name ] [ -D domainname ] [ name ] [ -a ] nisplus [ -l ] [ -f ] [ -D domainname ] name -s [ name ] [ -n min ] . . 4 :::::::::::::: File Formats [ -w warn ] passwd(4) NAME passwd - password file SYNOPSIS /etc/passwd DESCRIPTION /etc/passwd is a local source of information about users’ accounts.

I’ve included a Self-Assessment in this Exam Cram to help you evaluate your readiness to tackle Sun Certified System Administrator for Solaris 8 certification. ” Before you tackle this Self-Assessment, however, I’ll talk about the concerns you might face when pursuing a Solaris 8 System Administrator certification and what an ideal candidate might look like. Solaris 8 System Administrators in the Real World In the next section, I describe an ideal Solaris 8 System Administrator candidate, knowing full well that only a few actual candidates meet this ideal.

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