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Chapter 1. Introducing SELinux
This chapter explains the what and
why of SELinux. It begins by describing the
threat environment and why the prevalent model of
securitypatching against known vulnerabilitiesis
inadequate. The chapter goes on to describe several security
mechanisms designed to protect against both known and unknown
vulnerabilities. The chapter then presents an overview of SELinux,
describing its main features, capabilities, and history. The chapter
concludes with a survey of resources helpful to SELinux users.
