Security Information

Where to learn about Linux security

Linux Security HOWTO

The HOWTOs are always a good place to start for any topic, and this is no exception.

Elementary Security for Your Linux Box

A great introductory article from LinuxWorld. Ten basic security concepts, with good explanations. Includes a good list of resources. Part 2 of this article, Advanced Linux Security, is also valuable.

Linux Administrator's Security Guide

A good guide for any sysadmin.

Excerpts from Unix System Security Tools

Online sections from a good Unix security book. Contains another good Ten General Security Rules list.

Adding Security to Common Linux Distributions

If you use the BU Linux distribution, most of this has been done for you already. But it's worth a look if you're interested, and definitely important if you're using some other distribution.

Security News and Current Problems

Stay informed about current events and new vulnerabilities

BugTraq

The BugTraq mailing list is one of the foremost security resources on the Internet. Security problems are announced and discussed in detail. Subscribe by e-mailing listserv@securityfocus.com with a message body of "SUBSCRIBE BUGTRAQ Lastname, Firstname". You may also want to look through the archives.

Security Focus

The people who host BugTraq have a lot of other good info too, including good Linux coverage in their Unix area. Make sure to check out the vulnerabilities database.

CERT/CC Current Activity

In some ways, the most official security site there is. On the other hand, they're sometimes slow to release information. Your milage may vary.

Packet Storm

Would-be intruders have this information. You should too.