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Before we dive in the details about SELinux, I'd like to tell you about differences and

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similarities between SELinux and AppArmor.

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So SELinux was developed to lock down everything.

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If it's not allowed, it's denied.

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AppArmor works with profiles to secure specific services, and that means that it doesn't go

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for the overall approach.

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AppArmor was developed as an answer to SELinux that was relatively easy to learn.

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So SELinux is more complex.

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But also, SELinux offers much more advanced features, such as multi-level security.

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SELinux uses file system labels as its essence, and SELinux is the default in Red Hat and

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related distributions.

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AppArmor is the default in Ubuntu.

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Now throughout the years, there has been some discussion.

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What would you do?

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SELinux or AppArmor?

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But that discussion has been won nowadays.

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SELinux is implemented by Red Hat, and SELinux is a requirement by many governmental organizations

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throughout the world.