By Michael W. Lucas
The definitive consultant to OpenBSD
Foreword through Henning Brauer, OpenBSD PF Developer
OpenBSD, the stylish, hugely safe Unix-like working method, is popular 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 sensible strategy 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 most sensible 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 complicated 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 speedy and powerful utilizing the ports and programs system
* supply clients in simple terms the entry they wish with teams, sudo, and chroots
* Configure OpenBSD's safe implementations of SNMP, DHCP, NTP, sensors, and more
* customise the install and improve strategies in your community and undefined, or construct a customized OpenBSD release
Whether you're a brand new consumer searching for a whole advent 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 publication 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
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Extra resources for Absolute OpenBSD: UNIX for the Practical Paranoid (2nd Edition)
Protection in operating systems. Communications of the ACM, 19(8):461–471, August 1976. 4. G. McGraw. From the ground up: The dimacs software security workshop. In IEEE Security and Privacy, volume 1, pages 59–66, March 2003. 5. USA Department of Defense. DEPARTMENT OF DEFENSE TRUSTED COMPUTER SYSTEM EVALUATION CRITERIA. USA Department of Defence, 1985. 6. P. Samarati and S. De Capitani di Vimercati. Foundations of Security Analysis and Design, chapter Access Control: Policies, Models, and Mechanisms, pages 137–196.
4 Test Coverage Since the term “certification” has the same root as the term “certainty”, one might be tempted to think that black-box tests can provide conclusive evidence that a software product holds (or does not hold) a given property. For instance, can we use black-box testing to prove to a software purchaser’s satisfaction that the execution of the software product she is buying will never require more than 1 MByte of user memory? Unfortunately, this need for conclusive evidence clashes with a theoretical limitation of software testing.
Dijkstra, “The Humble Programmer”, Turing Award Lecture, 1972, Communications of the ACM, 15(10). 3 Black-box tests can also be used to discover failures, such as crashes. 4 Test-related literature often uses the term test set to indicate a set of test cases. , for displaying results or terminating the test execution). For the sake of conciseness, throughout this book we will loosely use the term test case as a synonym of “test case value”. ) White-box tests have a very different aim: to ensure that some aspects of some code property are exercised in the hope that this will reveal any errors not otherwise detected.