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SELinux System Administration, Third Edition

You're reading from   SELinux System Administration, Third Edition Implement mandatory access control to secure applications, users, and information flows on Linux

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Product type Paperback
Published in Dec 2020
Publisher Packt
ISBN-13 9781800201477
Length 458 pages
Edition 3rd Edition
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Author (1):
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Sven Vermeulen Sven Vermeulen
Author Profile Icon Sven Vermeulen
Sven Vermeulen
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Table of Contents (22) Chapters Close

Preface 1. Section 1: Using SELinux
2. Chapter 1: Fundamental SELinux Concepts FREE CHAPTER 3. Chapter 2: Understanding SELinux Decisions and Logging 4. Chapter 3: Managing User Logins 5. Chapter 4: Using File Contexts and Process Domains 6. Chapter 5: Controlling Network Communications 7. Chapter 6: Configuring SELinux through Infrastructure-as-Code Orchestration 8. Section 2: SELinux-Aware Platforms
9. Chapter 7: Configuring Application-Specific SELinux Controls 10. Chapter 8: SEPostgreSQL – Extending PostgreSQL with SELinux 11. Chapter 9: Secure Virtualization 12. Chapter 10: Using Xen Security Modules with FLASK 13. Chapter 11: Enhancing the Security of Containerized Workloads 14. Section 3: Policy Management
15. Chapter 12: Tuning SELinux Policies 16. Chapter 13: Analyzing Policy Behavior 17. Chapter 14: Dealing with New Applications 18. Chapter 15: Using the Reference Policy 19. Chapter 16: Developing Policies with SELinux CIL 20. Assessments 21. Other Books You May Enjoy

Automating system management with Puppet

Puppet is the third automation framework that we will check out. It is the oldest one in our list, with its first release in 2005, and is commonly seen as the baseline against which other automation frameworks are compared. It has commercial backing through the Puppet company, also often referred to as Puppet Labs.

How Puppet works

Like SaltStack, Puppet uses an agent/server-based model with public-key authentication of the agents to ensure no rogue agents are active within the environment.

The Puppet master has access to the Puppet manifests, which is the declaration of the state that Puppet wants to achieve. These manifests use a specific language inspired by Ruby and can refer to classes provided by modules to ensure reusability across the environment.

Puppet modules, hence, are the workhorse within Puppet, and Puppet has a significant community called Puppet Forge that allows you to download and install modules created by the...

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