O'Reilly logo

CentOS System Administration Essentials by Andrew Mallett

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 10. Security Central

Linux security is not a chapter in a book, it is a way of life. For every task that you carry out in CentOS, you should consider the security impact and how your actions can be made more secure. Of course, security takes many forms, and much of it is quite simple (for example, the physical security of servers locked in server rooms and so on. In this section, we will visit the world of pluggable authentication modules (PAM) and SELinux. Do not be scared of either, especially, SELinux; they are your friends. In this chapter, we will cover the following topics:

  • Understanding PAM configuration files: At the heart of PAM are the files located in /etc/pam.d; I will lead you through their syntax and meaning
  • Limits of PAM

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required