THIS CHAPTER COVERS BASIC COMPONENTS of Linux security. The starting point for securing a Linux system is the kernel. The kernel is not only the software that runs the system by interfacing between the software and the hardware, it’s also the code that gets executed when the system starts. In addition to the kernel and the boot process that helps to protect it, this chapter also looks at potential vulnerabilities associated with Linux applications. Linux security also depends on the authentication databases that apply to users and groups. User security forms the foundation ...
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