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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 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.

11.2 Web Sites

11.3 Mailing Lists

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

CIAC: Send e-mail to 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 with the Subject

See for more info and archives.

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

11.4 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


Paperback - 829 pages


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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