Network Security in Linux
In this lesson, you'll learn some techniques and strategies to secure network services. You'll also learn how the local firewall works in Linux and how to configure it. We'll talk about information leakage and ways to prevent it. Next, you'll learn how to test for open ports and perform port scans. You'll also learn about xinetd, what it does, and how to secure it. We'll also cover how to secure SSH. This lesson includes some guided demonstrations so that you can see the concepts being used in real-world environments.
Learning Objectives
- Learn how to secure SSH
- Understand the fundamentals of Linux firewall security, including configuring a firewall from the command line and setting up firewall rules
- Learn how to use TCP wrappers to secure your Linux system
Intended Audience
This lesson is intended for anyone who wants to understand how to secure their Linux systems.
Prerequisites
To get the most out of this lesson, you should already have a good working knowledge of Linux. If you want to brush up on your Linux skills, consider taking our Learn Linux in 5 Days course first.
Jason is the founder of the Linux Training Academy as well as the author of "Linux for Beginners" and "Command Line Kung Fu." He has over 20 years of professional Linux experience, having worked for industry leaders such as Hewlett-Packard, Xerox, UPS, FireEye, and Amazon.com. Nothing gives him more satisfaction than knowing he has helped thousands of IT professionals level up their careers through his many books and courses.