You're reading from Mastering Ubuntu Server Gain expertise in the art of deploying, configuring, managing, and troubleshooting Ubuntu Server

Product type Paperback

Published in Dec 2020

Publisher Packt

ISBN-13 9781800564640

Length 702 pages

Edition 3rd Edition

Tools

Ubuntu Server

Concepts

System Administration

Author (1):

Jay LaCroix

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Table of Contents (26) Chapters

Preface

1. Deploying Ubuntu Server

2. Managing Users and Permissions FREE CHAPTER

3. Managing Software Packages

4. Navigating and Essential Commands

5. Managing Files and Directories

6. Boosting Your Command-line Efficiency

7. Controlling and Managing Processes

8. Monitoring System Resources

9. Managing Storage Volumes

10. Connecting to Networks

11. Setting Up Network Services

12. Sharing and Transferring Files

13. Managing Databases

14. Serving Web Content

15. Automating Server Configuration with Ansible

16. Virtualization

17. Running Containers

18. Container Orchestration

19. Deploying Ubuntu in the Cloud

20. Automating Cloud Deployments with Terraform

21. Securing Your Server

22. Troubleshooting Ubuntu Servers

23. Preventing Disasters

24. Another Book You May Enjoy

25. Index

Installing and configuring Fail2ban

Fail2ban, how I love thee! Fail2ban is one of those tools that once I learned how valuable it is, I wondered how I ever lived so long without it. Fail2ban is able to keep an eye on your log files, looking for authentication failures. You can set the number of failures that are allowed from any given IP address, and if there are more than the allowed number of failures, Fail2ban will block that individual's IP address. It's highly configurable and can enhance the security of your server.

Installing and configuring Fail2ban is relatively straightforward. First, install its package:

sudo apt install fail2ban

After installation, the fail2ban daemon will start up and be configured to automatically start at boot time. Configuring fail2ban is simply a matter of creating a configuration file. But this is one of the more interesting aspects of Fail2ban: you shouldn't use its default config file. The default file is /etc/fail2ban...