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Mastering Linux Security and Hardening

You're reading from   Mastering Linux Security and Hardening Protect your Linux systems from intruders, malware attacks, and other cyber threats

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Product type Paperback
Published in Feb 2020
Publisher
ISBN-13 9781838981778
Length 666 pages
Edition 2nd Edition
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Author (1):
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Donald A. Tevault Donald A. Tevault
Author Profile Icon Donald A. Tevault
Donald A. Tevault
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Table of Contents (20) Chapters Close

Preface 1. Section 1: Setting up a Secure Linux System
2. Running Linux in a Virtual Environment FREE CHAPTER 3. Securing User Accounts 4. Securing Your Server with a Firewall - Part 1 5. Securing Your Server with a Firewall - Part 2 6. Encryption Technologies 7. SSH Hardening 8. Section 2: Mastering File and Directory Access Control (DAC)
9. Mastering Discretionary Access Control 10. Access Control Lists and Shared Directory Management 11. Section 3: Advanced System Hardening Techniques
12. Implementing Mandatory Access Control with SELinux and AppArmor 13. Kernel Hardening and Process Isolation 14. Scanning, Auditing, and Hardening 15. Logging and Log Security 16. Vulnerability Scanning and Intrusion Detection 17. Security Tips and Tricks for the Busy Bee 18. Assessments 19. Other Books You May Enjoy

An overview of firewalld

In a typical business setting, especially in larger enterprises, you may encounter various types of firewalld in various places that can provide various types of functionality. Some examples are as follows:

  • Edge devices that separate the internet from an internal network translate routable public IP addresses to non-routable private IP addresses. They can also provide various types of access control to keep out unauthorized people. By also providing various types of packet inspection services, they can help prevent attacks on the internal network, keep out malware, and prevent leakage of sensitive information from the internal network to the internet.
  • Large enterprise networks are normally divided into subnetworks, or subnets, with each corporate department having a subnet to call its own. Best practice dictates separating the subnets with firewalld....
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