Complete Linux Security & Hardening with Practical Examples
The best Linux security course to help you protect systems from attacks, reduce security risks, and apply practical hardening techniques.
Created by Imran Afzal
SECURITY
HARDEN
Linux Security & Hardening Skills
Issued by UTCLI Solutions
οΌ Add to interestsWhat you'll learn
Apply important Linux security measures in real system environments
Reduce the risk of Linux systems being hacked, misconfigured, or attacked
Build strong knowledge of Linux account security, password policies, and access control
Secure Linux filesystems using permissions, ownership, file attributes, and ACLs
Harden Linux systems by managing services, updates, partitions, cron jobs, SSH, SELinux, and backups
Protect Linux networks using firewalls, iptables, firewalld, encrypted traffic, SSH, and secure access
Understand security tools, threats, breaches, policy requirements, auditing, and compliance-focused hardening
Explore related topics
This course includes:
Included in This Course
11 sections Β· 133 lectures Β· 16h 20m total length
Description
Complete Linux Security & Hardening with Practical Examples is designed for learners who already understand basic Linux and want to improve their Linux security skills. The course focuses on practical steps that system administrators can use to protect Linux systems from unauthorized access, weak configurations, and common security risks.
You will learn how to secure user accounts, password policies, root access, SSH access, sudo permissions, user activity monitoring, PAM, filesystem permissions, ownership, ACLs, services, updates, partitions, cron jobs, SELinux, backups, firewalls, encrypted traffic, and secure network access.
This course is useful for system administrators, DevOps professionals, IT security learners, and anyone responsible for implementing security policy requirements, improving compliance, maintaining secure systems, and reducing Linux security risks in real environments.
What topics are covered?
- βSecurity concepts, operating system hardening, security tools, and types of security breaches
- βLinux lab setup with VirtualBox, virtual machines, and Linux installation
- βUser account security, password policies, root restrictions, SSH restrictions, UID/GID policies, sudo, and user activity monitoring
- βPAM concepts, PAM configuration files, control flags, modules, services, and authentication stacks
- βFilesystem security including file types, attributes, ownership, permissions, chmod, chown, and ACLs
- βSystem hardening including service cleanup, kernel updates, partitions, Ctrl+Alt+Delete protection, SSH ports, SELinux, NTP, cron, and backups
- βNetwork security including iptables, firewalld, firewall GUI, encrypted traffic, SSH vs Telnet, IPv6 decisions, NAT, VPN, and application/database encryption
Requirements
- βBasic understanding of Linux
- βA Linux machine for practice
- βIf you are using Windows, you can install VirtualBox and build a Linux lab
Who this course is for
- βAnyone who wants a complete understanding of Linux security and OS hardening
- βLinux administrators who want to improve system security and reduce risk
- βIT professionals who need technical guidance on securing Linux systems
- βDevOps professionals who manage Linux servers and want better hardening practices
- βAnyone responsible for implementing security policy requirements on Linux systems
- βStudents who want to advance their Linux career with practical security skills
Instructor
Imran AfzalCEO of UTCLI Solutions Β· Best-selling IT Instructor
- β 4.6 Instructor Rating
- β· 140,862 Reviews
- π₯ 828,262 Students
- βΆ 72 Courses
Imran Afzal, CEO of UTCLI Solutions and a best-selling IT instructor, has trained students worldwide in Linux, systems administration, cloud, cybersecurity, DevOps, database administration, and career development.
His teaching style focuses on simple explanations, practical learning, and real-world skills that help students prepare for jobs, certifications, and professional growth.
A strong Linux course for learners who want practical knowledge and real security examples.
The homework assignments, quizzes, and handouts help reinforce the material and support continued learning.
The course is simple, well-structured, and organized in a way that makes security topics easier to understand.
A helpful learning experience for anyone who wants to become more confident with Linux security and hardening.
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