| FreeBSD and OpenBSD are increasingly gaining traction in
educational institutions, non-profits, and corporations
worldwide because they provide significant security
advantages over Linux. Although a lot can be said for the
robustness, clean organization, and stability of the BSD
operating systems, security is one of the main reasons
system administrators use these two platforms.
There are plenty of books to help you get a FreeBSD or
OpenBSD system off the ground, and all of them touch on
security to some extent, usually dedicating a chapter to the
subject. But, as security is commonly named as the key
concern for today's system administrators, a single chapter
on the subject can't provide the depth of information you
need to keep your systems secure.
FreeBSD and OpenBSD are rife with security "building blocks"
that you can put to use, and Mastering FreeBSD and OpenBSD
Security shows you how. Both operating systems have kernel
options and filesystem features that go well beyond
traditional Unix permissions and controls. This power and
flexibility is valuable, but the colossal range of
possibilities need to be tackled one step at a time. This
book walks you through the installation of a hardened
operating system, the installation and configuration of
critical services, and ongoing maintenance of your FreeBSD
and OpenBSD systems.
Using an application-specific approach that builds on your
existing knowledge, the book provides sound technical
information on FreeBSD and Open-BSD security with plenty of
real-world examples to help you configure and deploy a
secure system. By imparting a solid technical foundation as
well as practical know-how, it enables administrators to
push their server's security to the next level. Even
administrators in other environments--like Linux and
Solaris--can find useful paradigms to emulate.
Written by security professionals with two decades of
operating system experience, Mastering FreeBSD and OpenBSD
Security features broad and deep explanations of how how to
secure your most critical systems. Where other books on BSD
systems help you achieve functionality, this book will help
you more thoroughly secure your deployments.
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Biting the hand that feeds IT 
Published by: O'REILLY & ASSOCIATES