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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

Using Ansible for SELinux system administration

The first orchestration and automation tooling we'll consider is Ansible, a very popular open source solution for the remote management of systems. Ansible has commercial backing through Red Hat but does not limit its support to Red Hat or even Linux systems. Other environments such as Windows environments or even network setups have significant Ansible-based support.

How Ansible works

Ansible generally uses a central server that hosts the configuration and interprets the settings. The Ansible runtime then connects to the remote systems over SSH, sending the necessary data to a temporary location, and then executes the steps locally.

The use of SSH as its main connection approach has significant advantages: administrators know how this protocol works and how to configure and control it. Furthermore, Ansible does not require any additional deployments on the target machines, except for Python and libselinux's Python...

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