Robert G. Byrnes

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  Linux Security Cookbook
  

  by Daniel J. Barrett, Richard E. Silverman, Robert G. Byrnes

  ISBN 0596003919 (0-596-00391-9)
  Softcover, O'Reilly Media, Incorporated

  
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  Book summary:

  Computer security is an ongoing process, a relentless contest between system administrators and intruders. A good administrator needs to stay one step ahead of any adversaries, which often involves a continuing process of education. If you're grounded in the basics of security, however, you won't necessarily want a complete treatise on the subject each time you pick up a book. Sometimes you want to get straight to the point. That's exactly what the new Linux Security Cookbook does. Rather than provide a total security solution for Linux computers, the authors present a series of easy-to-follow recipes--short, focused pieces of code that administrators can use to improve security and perform common tasks securely.

  The Linux Security Cookbook includes real solutions to a wide range of targeted problems, such as sending encrypted email within Emacs, restricting access to network services at particular times of day, firewalling a webserver, preventing IP spoofing, setting up key-based SSH authentication, and much more. With over 150 ready-to-use scripts and configuration files, this unique book helps administrators secure their systems without having to look up specific syntax. The book begins with recipes devised to establish a secure system, then moves on to secure day-to-day practices, and concludes with techniques to help your system stay secure.

  Some of the "recipes" you'll find in this book are:

  • Controlling access to your system from firewalls down to individual services, using iptables, ipchains, xinetd, inetd, and more
  • Monitoring your network with tcpdump, dsniff, netstat, and other tools
  • Protecting network connections with Secure Shell (SSH) and stunnel
  • Safeguarding email sessions with Secure Sockets Layer (SSL)
  • Encrypting files and email messages with GnuPG
  • Probing your own security with password crackers, nmap, and handy scripts

  This cookbook's proven techniques are derived from hard-won experience. Whether you're responsible for security on a home Linux system or for a large corporation, or somewhere in between, you'll find valuable, to-the-point, practical recipes for dealing with everyday security issues. This book is a system saver.

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  More editions of Linux Security Cookbook:

  • Linux Security Cookbook: ISBN 0596003919 (0-596-00391-9)
    Softcover, O'Reilly Media, Incorporated
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  Ssh, the Secure Shell: The Definitive Guide
  

  by Daniel Barrett, Richard E. Silverman, Robert G. Byrnes

  ISBN 0596008953 (0-596-00895-3)
  Softcover, Oreilly & Associates Inc

  
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  Book summary:

  The suite of utility applications that Unix users and administrators find indispensable--Telnet, rlogin, FTP, and the rest--can in fact prove to be the undoing of interconnected systems. The Secure Shell, aka SSH, which isn't a true shell at all, provides your otherwise attack-prone utilities with the protection they need. SSH, The Secure Shell: The Definitive Guide explains how to use SSH at all levels. In a blended sequence, the book explains what SSH is all about, how it fits into a larger security scheme, and how to employ it as an everyday user with an SSH client. More technically detailed chapters show how to configure a SSH server--several variants are covered--and how to integrate SSH with non-Unix client platforms.

  As befits its detail- and variation-rich subject, this book comprises many specialised sections, each dealing with some specific aspect of use or configuration (setting up access control at the account level, for example, or generating keys for a particular SSH server). The writing is both informative and fun to read; the authors switch back and forth between text and entry-and-response listings from SSH machines. They often run through a half-dozen or more variants on the same command in a few pages, providing the reader with lots of practical information. The discussion of how SSH fits into a Kerberos Public Key Infrastructure (PKI) is great, as is the advice on defeating particular kinds of attacks. --David Wall

  Topics covered:

  • The Secure Shell (SSH) for installers, administrators, and everyday users
  • SSH design and operation
  • Server setup
  • SSH agents
  • Client configuration
  • Public Key Infrastructure (PKI) integration
  • SSH1
  • SSH2
  • F-Secure
  • OpenSSH for Unix
  • SSH1 and SecureCRT for Microsoft Windows
  • NiftyTelnet SSH for Mac OS

  [via]

  More editions of Ssh, the Secure Shell: The Definitive Guide:

  • Ssh, the Secure Shell: The Definitive Guide: ISBN 0596008953 (0-596-00895-3)
    Softcover, Oreilly & Associates Inc