Tags: Tutorial

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OpenVPN
Learn how to build a proper virtual private network with OpenVPN in this tutorial.

Build a Real VPN with OpenVPN

Learn how to set up your own VPN in this tutorial from our archives.  A real, genuine, honest-to-gosh virtual private network (VPN) is an encrypted network-to-network virtual tunnel that connects trusted endpoints. It is not a HTTPS web portal that trusts all clients. Let us build a proper strong...
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minetest
Paul Brown shows how to use systemd to run a server for games, web applications, or other purposes. Image courtesy: Minetest

Systemd Services: Beyond Starting and Stopping

In the previous article, we showed how to create a systemd service that you can run as a regular user to start and stop your game server. As it stands, however, your service is still not much better than running the server directly. Let's jazz it up a bit by having it send out emails to the players...
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filesystem
This tutorial will help you get up to speed on the Linux filesystem.

The Linux Filesystem Explained

Back in 1996 I learned how to install software on my spanking new Linux before really understanding the topography of the filesystem. This turned out to be a problem, not so much for programs, because they would just magically work even though I hadn't a clue of where the actual executable files...
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The fc Command Tutorial With Examples For Beginners

The fc command, short for fix commands, is a shell built-in command used to list, edit and re-execute the most recently entered commands in to an interactive shell. You can edit the recently entered commands in your favorite editor and run them without having to retype the entire commands. This...
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IPFire
IPFire was designed for users new to firewalling, so it places a premium on user-friendliness.

IPFire: A User-Friendly Linux Firewall Distribution

Securing your network is an incredibly challenging task, one that’s made even more difficult by software that adds yet another layer of complexity on top. And let’s face it, most firewall tools are the stuff of user nightmare. That’s why, when a firewall tool strips away some of that complexity, it...
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Follow this Minikube Tutorial to Brew Up a Kubernetes Home Lab

This Minikube tutorial enables admins to work with Kubernetes without additional equipment, software or a significant time investment to set it up. Home labs isolate new technology from vital live infrastructure in production environments.  Follow the installation steps here, run kubectl commands...
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round robin
DNS round-robin is mapping multiple servers to the same hostname and really has nothing to do with the charming variety shown here.

Simple Load Balancing with DNS on Linux

When you have server back ends built of multiple servers, such as clustered or mirrowed web or file servers, a load balancer provides a single point of entry. Large busy shops spend big money on high-end load balancers that perform a wide range of tasks: proxy, caching, health checks, SSL...
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vim
Vim is so flexible you can make it do just about anything with a minimum number of keystrokes.

An Introduction to Vim for Sysadmins

Why, you ask, should anyone care about Vim? It's complex, it's so old it's a fossil, and you like Kate/Leafpad/Geany/Gedit/Nano/Jed/Lime/Emacs/what-have-you, and the Linux world is cram-full of great text editors, so why bother with Vim? The main reason it is included in nearly all Linux...
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migration
New to Linux? Learn how to easily list, move, and edit files at the command line in this tutorial.

Migrating to Linux: The Command Line

This is the fourth article in our series on migrating to Linux. If you missed the previous installments, we’ve covered Linux for new users, files and filesystems, and graphical environments. Linux is everywhere. It's used to run most Internet services like web servers, email servers, and others. It...
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Docker image
Learn the basic steps for creating Docker images in this tutorial.

How to Create a Docker Image

In the previous article, we learned about how to get started with Docker on Linux, macOS, and Windows. In this article, we will get a basic understanding of creating Docker images. There are prebuilt images available on DockerHub that you can use for your own project, and you can publish your own...
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