Linux Security Foundations and System Hardening

Securing your operating system is the critical first step in protecting your data and applications from modern cyber threats. This text-based course guides you from fundamental security concepts to practical hardening techniques for popular Linux distributions like Debian. What you will learn: - Understand core security terminology, user privileges, and the modern threat landscape. - Configure secure user authentication and implement strong password policies. - Harden network access using firewalls, secure SSH configurations, and basic zero-trust principles. - Manage file permissions and access control lists to protect sensitive system data. - Monitor system logs and audit trails to detect unauthorized access attempts. You will start by learning key security terminology and basic concepts before moving on to step-by-step written explanations for locking down system access, managing permissions, and monitoring logs. This course is designed for beginners who want to build a solid foundation in Linux administration and security, with no prior security experience required. Start reading today to build a more secure and resilient Linux environment.