Security articles

Last change: 2025-01-10

The lynis command runs a security audit on Linux systems to test for vulnerable packages, security issues, and possible improvements for system hardening.

Last change: 2025-01-06

Learn more about the system calls (syscalls) that systemd may use in commands and unit files, such as with SystemCallFilter property.

Last change: 2025-01-06

Systemd has a wide set of unit settings available that can be used to secure units and system services. Learn which ones and how to implement them.

Last change: 2025-01-06

What is security through obscurity? This article explains this term including examples relevant to Linux security and system hardening.

Last change: 2025-01-06

Learn common security concepts that also will apply when securing Linux environments, like system hardening and implementing security measures.

Last change: 2025-01-06

Linux Security Should be Simple, Right? Why that is not a reality, and we might never achieve it is discussed in this article.

Last change: 2025-01-06

Generate random passwords with the help of the openssl command using the 'rand' function, often already available on Linux systems.

Last change: 2025-01-06

Too often we select security products based on the amount of features, instead of smart combinations. Don't think tools, but start building up a toolkit.

Last change: 2025-01-06

Docker Inc. is one of the pioneers in the world of DevOps and known for its toolkit around Linux container technology. Will Docker make things more secure?

Last change: 2025-01-06

To ensure your Docker images are properly configured, we show some of the best practices. Building secure Docker containers doesn't have to be hard.

Last change: 2025-01-06

Everyone loves secure websites, as long as they are quick. Let's configure our website for maximum security and performance, at the same time.

Last change: 2025-01-06

With five basic security principles we can improve system security of almost any Linux system. Start here your journey to learn them.

Last change: 2025-01-06

In-depth article about Docker security features, best practices and its history. With container technology evolving, Docker security can be challenging..

Last change: 2025-01-06

To determine the available yum plugins, we analyze them for our goal: discovering if security support is in the yum plugins itself or built-in by default.

Last change: 2025-01-06

Protecting computer networks consists of implementing preventative measures, including system auditing. Let's have a look how this relates to Linux.

Last change: 2025-01-06

Every system is as strong as its weakest link, especially the system kernel. This article explains Linux kernel security, what we can do and how to do so.

Last change: 2025-01-06

Performing a Linux server security audit can be a time consuming process. In this article the most important parts are explained including automation.

Last change: 2025-01-06

Learn more about vulnerability scanning on Linux systems using the Lynis auditing tool. Check for weaknesses and security measures that can be implemented.

Last change: 2025-01-06

Article about how to audit and check installed software packages and their security by using the related package managers.