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Chapter 2. Overview of the SELinux Security Model
The main purpose of this chapter is to
introduce you to SELinux terms and concepts helpful in the
installation and initial configuration of SELinux, which is covered
in Chapter 3. This chapter presents an overview
of the security model implemented by SELinux, which is based on the
Flask architecture designed by the NSA. (SELinux is ultimately
grounded on principles that have guided the design and administration
of highly secure military systems for decades, such as those
described in the so-called "Orange
Book."[1]) Because of this chapter's practical
aim, its emphasis is on basic Flask and SELinux concepts and terms.
Chapter 5 explains the SELinux security model
in greater detail. In addition to providing an overview of SELinux
functions, Chapter 5 provides an overview of SELinux architecture,
describing each major SELinux component.[1] DoD Trusted
Computer System Evaluation Criteria (DoD 5200.28-STD),
available from the U.S. National Institute of Standards, http://csrc.nist.gov/secpubs/rainbow/nsaorder.txt.
