Unix/Linux/BSD Security

It is very important to keep your Unix systems up-to-date with vendor supplied patches and to properly configure them for security.

Debian GNU/Linux Security Guide
http://www.debian.org/doc/manuals/securing-debian-howto/

Gentoo GNU/Linux Security Guide
http://www.gentoo.org/doc/en/security

Hardened Gentoo Project
http://www.gentoo.org/proj/en/hardened/

Redhat Enterprise Linux 4 Hardening Guide
http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/en-US/Security_Guide/

NSA Redhat Enterprise Linux 5 Checklist
http://www.nsa.gov/ia/_files/factsheets/rhel5-pamphlet-i731.pdf

Redhat Enterprise Linux 4 Security Enhanced Linux Guide
http://www.redhat.com/docs/manuals/enterprise/RHEL-4-Manual/selinux-guide/selg-preface-0011.html

Fedora Project 10 Security Enhanced Linux User Guide
http://docs.fedoraproject.org/selinux-user-guide/f10/en-US/

OpenBSD - a free, proactively secure BSD Unix OS
OpenBSD  www.openbsd.org

FreeBSD - a free BSD compliant Unix OS
FreeBSD www.freebsd.org

National Security Agency Operating System Hardening Guides
(includes Microsoft, Macintosh, Solaris)
http://www.nsa.gov/ia/guidance/security_configuration_guides/operating_systems.shtml

Center for Internet Security
(OSX, FreeBSD, Solaris, Linux, HP-UX, AIX)
http://www.cisecurity.org/

Bastille Linux - Host Based Unix Hardening Scripts - Red Hat, SUSE,
Debian, Gentoo, and Mandrake distributions, along with HP-UX and Mac OS X.
http://bastille-linux.org/

Security Administration
http://www.networkworld.com/

Linux Hardening Guide
http://www.linux-sec.net/Harden/howto.gwif.html

Hardening Solaris
http://online.securityfocus.com/infocus/1365

General information about Securing Solaris, Patches
http://dmoz.org/Computers/Software/Operating_Systems/Unix/Solaris/Administration/

Strengthening AIX Security: A System-Hardening Approach
http://www-03.ibm.com/servers/aix/whitepapers/aix_security.pdf

AIX Operating System Hardening Procedures & Security Guide
http://aplawrence.com/MDesrosiers/aixhardening.html