Linux Security and Hardening: A Practical Approach

📘 ** Linux Security and Hardening: A Practical Approach **

🚀 Introduction Welcome to the comprehensive course on Linux Security and Hardening! This practical guide is designed to equip you with the knowledge and skills necessary to fortify your Linux server against malicious attacks. By the end of this course, you'll be well-versed in securing your system from within and without. Let's embark on this journey to make your Linux environment impenetrable! 🛡️

🔥 Physical Security of a Linux Box The first line of defense is often overlooked: the physical security of your server. We'll explore topics such as:

• Overview of Physical Security
• BIOS Firmware Security
• Setting a BIOS Password
• Single User Mode Security
• Securing Boot Loader

🔐 PAM (Pluggable Authentication Modules) Passwords are the digital gatekeepers of your system. We'll dive deep into PAM, including:

• Overview of PAM Security
• Concepts of PAM
• PAM Modules & Configurations
• PAM Module Groups
• Control Flags in PAM
• Hands-on practice with PAM modules and a quiz to test your knowledge.

👥 Account Security User accounts can be a weak link if not properly managed. We'll cover:

• User Account Security
• Forcing strong passwords
• Password strength-checking with pam_pwquality
• Account Locked using pam_faillock PAM module
• Understanding Password Aging Policy
• Practical lab sessions to apply what you've learned.

📁 File System Security Data is the crown jewel of any system. We'll discuss how to protect it:

• Overview of File & Directory Permission
• Changing Permission & Ownership
• Special Permissions like setuid, setgid, sticky bit, and ACLs
• Controlling files with ACLs and a hands-on ACLs demo

🌐 Network Security The network is an ever-changing battleground. We'll focus on:

• Overview of Network Security
• Securing SSH with Openssh
• Configuring and hardening SSHD settings

🧠 Linux Firewall Understanding and utilizing the firewall is crucial for system security. Topics covered include:

• Firewall concepts and the advantages of nftables and firewalld
• Setting up and managing firewalld with a variety of lab sessions
• Mastering Rich Rules to fine-tune your security posture

🛡️ Managing SELinux Security SELinux can be a powerful ally in securing your system. We'll explore:

• Introduction to SELinux
• Changing SELinux modes and contexts with practical lab sessions
• Working with SELinux Booleans
• Auditing logs and troubleshooting SELinux issues

By the end of this course, you will have a robust understanding of Linux Security and Hardening. You'll be armed with the tools and techniques to secure your system from the myriad of threats lurking in the digital world. Are you ready to take control of your server's security? Let's get started! 🚀

👩‍🏫 Instructor-Led Sessions Each module is complemented with instructor-led sessions that allow you to apply theoretical knowledge in real-world scenarios. With hands-on labs and interactive quizzes, this course ensures you're not just a listener but an active participant in your learning journey.

📢 Engage with the Community Join our community of cybersecurity enthusiasts and professionals to share knowledge, discuss real-world challenges, and stay updated on the latest trends in Linux Security and Hardening.

Enroll now and secure your place as a Linux Security expert! 🔒📖🎉