Tutorials Archives – GEANTECHNOLOGY

What Is SD-WAN? A Simple Beginner’s Guide to Software-Defined Networking

Nov 15, 2026 • Network Equipment

Imagine a company with offices in three different cities. Employees in each office need to access the same applications, communicate with each other, and...

Make Your Linux Terminal Better with eza

Nov 9, 2026 • Premium

The ls command is one of the most frequently used tools in Linux. It helps users list files and directories, but what if you...

Protocol Explorer: Learn How Network Protocols Work Through Interactive Animations

Nov 9, 2026 • Premium

Understanding how data travels across a network can be challenging, especially for beginners learning networking, TCP/IP, and network troubleshooting. Protocol Explorer offers an interesting...

LiberNT: An Open-Source Alternative to Windows and Linux

Nov 7, 2026 • Linux

What if you could run Windows applications without installing Windows, or use Linux applications without running a Linux distribution? That’s the idea behind LiberNT,...

Linux Kernel vs Filesystem: What’s the Difference and Why Does Linux Need Both?

Nov 2, 2026 • Premium

When learning Linux, two important concepts often create confusion: the Linux Kernel and the Filesystem. They work together, but they have different responsibilities. Understanding...

Linux Tip: How to Find the Process Consuming the Most Memory on Your Server

Oct 30, 2026 • Linux

total used free shared buff/cache availableMem: 16Gi 9.2Gi 1.1Gi 450Mi 5.7Gi 6.1GiSwap: 2.0Gi 256Mi 1.7Gi Here’s what the columns mean: Important: Linux uses available...

RAID Is Not a Backup: Five Storage Failures Every Sysadmin Should Understand

Oct 27, 2026 • Tutorials

A technical guide for system administrators on RAID reliability, data loss, storage failures, and practical backup strategies. The key takeaway: RAID helps keep systems...

Defense in Depth: The 7 Layers of Cybersecurity and Their Role in ISO 27001

Oct 25, 2026 • CyberSecurity

Cyberattacks rarely exploit just one weakness. An attacker might enter through a phishing email, exploit an unpatched server, move across the network, and steal...

Open Source Software vs. Free Software: What Is the Difference?

Oct 24, 2026 • Tutorials

Open source software and free software have changed how developers build applications, how businesses manage their IT infrastructure, and how people use computers. Both...

Linux Threads Explained: A Step-by-Step Guide for Beginners with Practical Examples

Oct 22, 2026 • Linux

Linux threads help applications perform multiple tasks within a single process. Web servers, databases, desktop applications, and system services use threads to handle concurrent...