Linux Security Basics and Beyond: Unit 2

Overview

This course is designed to equip you with the skills necessary to protect and harden Linux distributions such as Debian, Ubuntu, CentOS, SUSE, and Arch. Through five engaging lessons, you'll delve into the essentials of Linux security, learning to implement in-depth defense strategies and understand the CIA triad. Master the art of updating Linux systems to mitigate vulnerabilities, and gain proficiency in managing services to balance system availability and security. You'll also explore techniques to harden various Linux distributions both on-premises and in the cloud. Finally, enhance your knowledge with application and GRUB security, focusing on tools like AppArmor and SELinux. By the end of this course, you'll be adept at safeguarding your Linux environments, ensuring they remain robust and resilient against threats.

Syllabus

Securing Linux Operating Systems

This module is about updating and securing Linux distributions, such as Debian, Ubuntu, CentOS, SUSE, and Arch. You will learn about the security basics of a Linux operating system, the concept of defense in-depth, and the CIA triad of security. You will also learn about updates, the number one way to harden a Linux system, as well as working with services and system health. You will see how the system CTL commands can be used to increase availability and reduce the attack surface of a Linux server. You will also gain experience securing Linux distros, in particular, how to harden Debian, Ubuntu, and CentOS, both on-premises and on the cloud. Finally, you will learn about application and GRUB security, and will discuss AppArmor and SELinux. By the end of this module, you will understand the importance of updating and hardening your system to maintain data security and availability for users.