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11. Security Sources

There are a LOT of good sites out there for Unix security in general and Linux security specifically. It's very important to subscribe to one (or more) of the security mailing lists and keep current on security fixes. Most of these lists are very low volume, and very informative.

11.1. References

The web site has numerous Linux and open source security references written by the LinuxSecurity staff and people collectively around the world.

  • Linux Advisory Watch -- A comprehensive newsletter that outlines the security vulnerabilities that have been announced throughout the week. It includes pointers to updated packages and descriptions of each vulnerability.

  • Linux Security Week -- The purpose of this document is to provide our readers with a quick summary of each week's most relevant Linux security headlines.

  • Linux Security Discussion List -- This mailing list is for general security-related questions and comments.

  • Linux Security Newsletters -- Subscription information for all newsletters.

  • FAQ -- Frequently Asked Questions with answers for the newsgroup.

  • Linux Security Documentation -- A great starting point for information pertaining to Linux and Open Source security.

11.2. FTP Sites

CERT is the Computer Emergency Response Team. They often send out alerts of current attacks and fixes. See for more information.

ZEDZ (formerly Replay) ( has archives of many security programs. Since they are outside the US, they don't need to obey US crypto restrictions.

Matt Blaze is the author of CFS and a great security advocate. Matt's archive is available at is a great security FTP site in the Netherlands.

11.3. Web Sites

11.4. Mailing Lists

Bugtraq: To subscribe to bugtraq, send mail to [email protected] containing the message body subscribe bugtraq. (see links above for archives).

CIAC: Send e-mail to [email protected]. In the BODY (not subject) of the message put (either or both): subscribe ciac-bulletin

Red Hat has a number of mailing lists, the most important of which is the redhat-announce list. You can read about security (and other) fixes as soon as they come out. Send email to [email protected] with the Subject Subscribe See for more info and archives.

The Debian project has a security mailing list that covers their security fixes. See for more information.

11.5. Books - Printed Reading Material

There are a number of good security books out there. This section lists a few of them. In addition to the security specific books, security is covered in a number of other books on system administration.

  • Building Internet Firewalls By D. Brent Chapman & Elizabeth D. Zwicky, 1st Edition September 1995, ISBN: 1-56592-124-0

  • Practical UNIX & Internet Security, 2nd Edition By Simson Garfinkel & Gene Spafford, 2nd Edition April 1996, ISBN: 1-56592-148-8

  • Computer Security Basics By Deborah Russell & G.T. Gangemi, Sr., 1st Edition July 1991, ISBN: 0-937175-71-4

  • Linux Network Administrator's Guide By Olaf Kirch, 1st Edition January 1995, ISBN: 1-56592-087-2

  • PGP: Pretty Good Privacy By Simson Garfinkel, 1st Edition December 1994, ISBN: 1-56592-098-8

  • Computer Crime A Crimefighter's Handbook By David Icove, Karl Seger & William VonStorch (Consulting Editor Eugene H. Spafford), 1st Edition August 1995, ISBN: 1-56592-086-4

  • Linux Security By John S. Flowers, New Riders; ISBN: 0735700354, March 1999

  • Maximum Linux Security : A Hacker's Guide to Protecting Your Linux Server and Network, Anonymous, Paperback - 829 pages, Sams; ISBN: 0672313413, July 1999

  • Intrusion Detection By Terry Escamilla, Paperback - 416 pages (September 1998), John Wiley and Sons; ISBN: 0471290009

  • Fighting Computer Crime, Donn Parker, Paperback - 526 pages (September 1998), John Wiley and Sons; ISBN: 0471163783

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