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https://www.nsa.gov/what-we-do/research/selinux/
SELinux development has transitioned to the Linux and open source software developer community. As such, updates to these SELinux webpages haven't occurred since 2008. Please visit the SELinux project GitHub site for more up-to-date information. End systems must be able to enforce the separation of ...
https://www.nsa.gov/what-we-do/research/selinux/documentation/
The NSA and SCC developed two Mach-based prototypes of the architecture: DTMach and DTOS. The NSA and SCC then worked with the University of Utah's Flux research group to transfer the architecture to the Fluke research operating system. During this transfer, the architecture was enhanced to provide better support for dynamic security policies.
https://www.nsa.gov/What-We-Do/Research/SELinux/Contributors/
The NSA researchers reworked the LSM-based SELinux for inclusion in Linux 2.6. NSA has also led the development of similar controls for the X Window System (XACE/XSELinux) and for Xen (XSM/Flask). Network Associates Laboratories (NAI Labs)
https://www.nsa.gov/What-We-Do/Research/SELinux/FAQs/
SELinux support is already included in the mainline Linux 2.6 kernel available from kernel.org. The core SELinux userland code consists of a library for binary policy manipulation (libsepol), a policy compiler (checkpolicy), a library for security-aware applications (libselinux), a library for policy management tools (libsemanage), and several policy-related utilities (policycoreutils).
https://how-to.fandom.com/wiki/How_to_configure_the_Linux_kernel/security/selinux
This enables the development support option of NSA SELinux, which is useful for experimenting with SELinux and developing policies. If unsure, say Y. With this option enabled, the kernel will start in permissive mode (log everything, deny nothing) unless you specify enforcing=1 on …
https://www.oreilly.com/library/view/selinux/0596007167/ch04s02.html
If your Linux kernel was compiled with the NSA SELinux Development support option, you can specify the SELinux operating mode that should be entered when your SELinux system is booted. And, unless the SELinux security policy specifies otherwise, you can dynamically change the operating mode of a running SELinux system.
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/4/html/SELinux_Guide/rhlcommon-appendix-0005.html
Finally, the SELinux code was integrated upstream to the 2.6. x kernel, which has full support for LSM and has extended attributes (xattrs) in the ext3 file system. SELinux was moved to using xattrs to store security context information.
https://www.nsa.gov/Portals/70/documents/what-we-do/research/selinux/documentation/presentations/2006-ottawa-linux-symposium-bof-presentation.pdf
National Information Assurance Research Laboratory 4 SELinux: Background • Originated from NSA R&D. • First public release by NSA in Dec 2000. • Large and growing user and developer community. • First packaged externally for Debian. • Integrated into Hardened Gentoo. • …
https://access.redhat.com/discussions/774083
Apr 08, 2014 · The NSA's goal for SELinux was to have commercial, off-the-shelf technology capable of supporting secure, compartmentalized information processing, as needed by the NSA, CIA and DOD. In short, to let the spies get off obsolete 20-year old technology and …
https://en.wikipedia.org/wiki/Security-Enhanced_Linux
Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC). SELinux is a set of kernel modifications and user-space tools that have been added to various Linux distributions.License: GNU GPL
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