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Mastering Linux Security and Hardening - Third Edition

You're reading from Mastering Linux Security and Hardening - Third Edition

Product type Book

Published in Feb 2023

Publisher Packt

ISBN-13 9781837630516

Pages 618 pages

Edition 3rd Edition

Languages

Concepts

Information Security

Author (1):

Donald A. Tevault

Table of Contents (22) Chapters

Preface

1. Section 1: Setting up a Secure Linux System

2. Running Linux in a Virtual Environment

3. Securing Administrative User Accounts

4. Securing Normal User Accounts

5. Securing Your Server with a Firewall – Part 1

6. Securing Your Server with a Firewall — Part 2

7. Encryption Technologies

8. SSH Hardening

9. Section 2: Mastering File and Directory Access Control (DAC)

10. Mastering Discretionary Access Control

11. Access Control Lists and Shared Directory Management

12. Section 3: Advanced System Hardening Techniques

13. Implementing Mandatory Access Control with SELinux and AppArmor

14. Kernel Hardening and Process Isolation

15. Scanning, Auditing, and Hardening

16. Logging and Log Security

17. Vulnerability Scanning and Intrusion Detection

18. Prevent Unwanted Programs from Running

19. Security Tips and Tricks for the Busy Bee

20. Other Books You May Enjoy

21. Index

Understanding the Linux system log files

You’ll find the Linux log files in the /var/log/ directory. The structure of Linux log files is pretty much the same across all Linux distros. But, in the Linux tradition of trying to keep us all confused, the main log files have different names on different distros. On Red Hat-type systems, the main log file is the messages file, and the log for authentication-related events is the secure file. On Debian/Ubuntu-type systems, the main log file is the syslog file, and the authentication log is the auth.log file. Other log files you’ll see include the following:

/var/log/kern.log: On Debian/Ubuntu-type systems, this log contains messages about what’s going on with the Linux kernel. As we saw in Chapter 4, Securing Your Server with a Firewall – Part 1, and Chapter 5, Securing Your Server with a Firewall – Part 2, this includes messages about what’s going on with the Linux firewall. So, if you...

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Authors (1)

Donald A. Tevault

Donald A. Tevault - but you can call him Donnie - got involved with Linux way back in 2006, and has been working with it ever since. He holds the Linux Professional Institute Level 3-Security certification, and the GIAC Incident Handler certification. Donnie is a professional Linux trainer, and thanks to the magic of the internet, teaches Linux classes literally the world over from the comfort of his living room. He's also a Linux security researcher for an IoT security company.

See other products by Donald A. Tevault

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