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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 mod_selinux with Apache

Applications are often web-based, exposing their interface as either a common website or a simple web service, and executing the bulk of logic either within the web server or in backend services that the web server interacts with for the user.

A web-based application has the huge advantage that end users often don't require any application or client to be installed on top of what is available by default on their device, be it a workstation, laptop, mobile, wristwatch, or smart TV.

However, unlike the services discussed earlier, Apache does not run individual user sessions through PAM logins on the system. Instead, user requests are handled by the web server threads and processes themselves, which makes easy SELinux-based controls a bit harder to accomplish.

Introducing mod_selinux

Apache has support for modules: dynamically loadable code that enhances the functionality of the web server, without having to rebuild the web server code itself...

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