SELinux

A security enhancement to Linux which allows users and administrators more control over access…

3 Alternatives To SELinux

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CLIP OS

The CLIP OS project is an open source project maintained by the ANSSI (National Cybersecurity…
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Qubes OS

Qubes is a security-oriented, free and open-source operating system for personal computers that allows you to securely compartmentalize your digital life.‎ Qubes OS is a free and open-source security-oriented operating system meant for single-user desktop computing.
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grsecurity

Role-based access control system, least privilege memory protection, chroot restriction, etc.