What you'll learn

Left at their defaults, production servers accept risky logins, generate logs no one is watching, and run applications with no confinement beyond standard permissions. In this course, Security Hardening and System Monitoring in Ubuntu Linux, you'll gain the ability to harden, monitor, and confine a production Ubuntu server. First, you'll explore how to lock down SSH access using key-based authentication, configuration hardening, and fail2ban. Next, you'll discover how to monitor system health and audit activity using the systemd journal, resource monitoring tools, and auditd. Finally, you'll learn how to implement AppArmor mandatory access control profiles to confine applications beyond what standard permissions allow. When you're finished with this course, you'll have the skills and knowledge of Ubuntu security hardening needed to run servers that are resilient, observable, and auditable in a professional environment.