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Hands-On Linux Security: Hardening Linux Systems
202 students
Hands-On Linux Security: Hardening Linux Systems
Secure Linux systems through hands on labs using the industry's most important security tools.
Created byAbe Bazouie
Last updated 8/2026
English
English [Auto],
What you'll learn
- Understand core Linux security concepts, including defense in depth, least privilege, and security monitoring
- Discover and assess Linux systems using tools such as Nmap, Lynis, OpenSCAP, ss, and lsof
- Detect and investigate security events with Auditd, Ausearch, and Journalctl
- Protect Linux servers against common threats using Fail2ban, OpenSSL, ClamAV, and Rkhunter
- Troubleshoot and validate security controls using Tcpdump, Netcat, and OpenSSL
- Build a practical Linux security workflow used by Linux administrators, DevOps engineers, and SREs
Explore related topics
Course content
9 sections • 20 lectures • 2h 42m total length
Requirements
- Basic Linux command-line experience
- A Linux system (physical machine, VM, cloud instance, or WSL)
- No prior cybersecurity experience required
Description
Why Linux Security Matters
Linux powers modern infrastructure, cloud platforms, containers, and enterprise applications. Whether you're a Linux administrator, DevOps engineer, SRE, or IT professional, understanding how to secure Linux systems is a critical skill in today's environments.
In this course, you'll learn practical Linux security concepts and gain hands-on experience with the tools commonly used to assess, monitor, harden, and troubleshoot Linux systems.
We'll begin with the fundamentals of Linux security, including defense in depth, least privilege, detection and monitoring, and a practical security assessment workflow. These concepts will help you understand not only how security tools work, but when and why to use them.
From there, we'll use real-world demonstrations to assess, monitor, harden, and troubleshoot Linux systems using industry-standard security tools.
What You'll Learn
Discover open ports, services, and attack surfaces with Nmap, ss, and lsof
Assess Linux security posture using Lynis and OpenSCAP
Secure Linux firewalls using UFW, iptables, and nftables
Protect systems against common attacks using Fail2ban
Secure Linux systems with SELinux through practical, hands on examples
Work with certificates, encryption, and TLS using OpenSSL
Monitor security events using Auditd and Journalctl
Investigate security incidents using Ausearch
Detect malware, rootkits, and signs of compromise using ClamAV and Rkhunter
Validate and troubleshoot security controls using Netcat and Tcpdump
Who This Course Is For
This course focuses on practical learning rather than theory alone. Every tool is demonstrated in a Linux environment so you can follow along and apply the techniques in your own lab, workplace, or cloud environment.
By the end of this course, you'll understand how security professionals approach Linux security, identify risks, monitor systems effectively, investigate security events, and use industry-standard tools to improve your security posture.
Whether you're a Linux administrator, DevOps engineer, SRE, cybersecurity student, or IT professional, this course will help you build practical Linux security skills that you can apply immediately in real-world environments.
Who this course is for:
- Linux administrators who want to improve their security skills
- DevOps engineers and SREs responsible for securing Linux systems
- IT professionals looking to learn practical Linux security tools
- Students preparing for Linux, DevOps, or cybersecurity roles
- Anyone who wants hands-on experience with real-world Linux security tools