] NSA initiatives in enhancing software security cover both
] proprietary and open source software, and we have
] successfully used both proprietary and open source models
] in our research activities. NSA's work to enhance the
] security of software is motivated by one simple
] consideration: use our resources as efficiently as
] possible to give NSA's customers the best possible
] security options in the most widely employed products.
] The objective of the NSA research program is to develop
] technologic advances that can be shared with the software
] development community through a variety of transfer
] mechanisms. NSA does not favor or promote any specific
] software product or business model. Rather, NSA is
] promoting enhanced security.

NSA's guides to securing machines

NSA - Security Configuration Guides