NSA RHEL5 cheat-page:
www.nsa.gov/ia/_files/factsheets/rhel5-pamphlet-i731.pdf

A 170 page PDF about securely configuring Red Hat, written by and for
the government. If you look around on NSA.gov

http://www.nsa.gov/ia/_files/os/redhat/rhel5-guide-i731.pdf

The United States National Security Agency has made some brilliant guides for securely configuring now’s more standard operating systems. Check out the links not more than for PDF copies of the guides.

From the National Security Agency and Central Security Service Website:

“NSA has developed and distributed configuration guidance for operating systems. These guides are now being used throughout the government and by numerous entities as a security baseline [for] their systems.”

Mac OS X

• Mac OS X Security Configuration for Version 10.5 Leopard Second Journal.
• Hardening Tips for the Defaulting Installation of Mac OS X 10.5 “Leopard”.

Linux

• Guide to the Secure Configuration of Red Hat endeavor Linux 5.
• Hardening Tips for the Red Hat endeavor Linux 5.

Microsoft Windows

• Windows Outlook Security Guide (MSI Installer).
• The Windows Server 2003 – Security Guide, v2.1.

Solaris

• CIS Solaris 10 Benchmark v4.0.
• An Overview of Solaris 10 Operating System Security Controls.
• Guide to Secure Configuration of Solaris 9.

For more information and guides to additional operating systems refer to the National Security Agency and Central Security Service’s Operating Systems Website listed not more than:

• Operating Systems – NSA/CSS.