<ul><li>Ubuntu comes with a powerful security tool called AppArmor, designed to provide a robust layer of defense by confining programs with access control profiles.</li><li>AppArmor is a Mandatory Access Control (MAC) system that supplements the traditional Discretionary Access Control (DAC) in Ubuntu, enforcing rules for applications to prevent system harm.</li><li>AppArmor is preferred in Ubuntu over SELinux for its ease of use, human-readable syntax, and simple profile management, making it a more user-friendly security option.</li><li>Core concepts of AppArmor include profiles that define application permissions, modes like Enforce and Complain, and components specifying file access, capabilities, network operations, and more.</li></ul>

Ubuntu Security Reinvented: Hardening Your System with AppArmor

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