I frequently get asked what I do to secure the operating systems I use. Specifically from a nuts and bolts, configuration stand point.
When I tell them I use the NSA Security Configuration Guides they are a generally surprised to learn that such guides exist. Not only do they exist; they are an incredibly helpful resource and combines a huge amount of no-nonsense tweaks that NSA uses to secure their own machines.
NSA Security Configuration Guide for OS X
NSA Security Configuration Guide for Windows XP
