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

Product type Paperback

Published in Dec 2020

Publisher Packt

ISBN-13 9781800201477

Length 458 pages

Edition 3rd Edition

Tools

Docker

Concepts

System Administration

Author (1):

Sven Vermeulen

View More author details

Table of Contents (22) Chapters

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

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Communicating over D-Bus

The D-Bus daemon provides an inter-process communication channel between applications. Unlike traditional IPC methods, D-Bus is a higher-level communication channel that offers more than simple signaling or memory sharing. Applications that want to chat over D-Bus link with one of the many D-Bus-compatible libraries, such as those provided by the libdbus, sd-bus (part of systemd), GDBus, and QtDBus applications.

The D-Bus daemon is part of the systemd application suite.

Understanding D-Bus

Linux generally supports two D-Bus types – system-wide and session-specific D-Bus instances:

The system-wide D-Bus is the main instance used for system communication. Many services or daemons will associate themselves with the system D-Bus to allow others to communicate with them through D-Bus.
The session-specific D-Bus is an instance running for each logged-in user. It is commonly used by graphical applications to communicate with each other...