System & Network Admin

We can set up our own remote access VPN server with little knowledge of programming using open-source software bundles such as Algo VPN…

Sysadmin trick of the day – if a server is down and you don't know when it will be back up, use `ping -a` to hear when it comes back up. The `-a` flag enables audio alert.

Get your SQL container to build with a pre-deployed dacpac file, perfect for those testing scenarios that require a database.

In this guide we will explore how to configure a scan policy on Nessus, later we will also use this policy to create a scan. We will then select a tar...

Arpwatch is an open source computer software program that helps you to monitor Ethernet traffic activity (like Changing IP and MAC Addresses) on your network.

Experiencing the "no sound" problem on Ubuntu after a fresh installation or an upgrade? Resolve it with these simple fixes.

Software in 2021 is harder to understand than it was in 2001, and for valid reasons. Modern architectures are fundamentally more complex.

The fast, feature-rich, GPU based terminal emulator Fast Offloads rendering to the GPU for lower system load, Uses threaded rendering for absolutely minimal latency, Performance tradeoffs can be tu...

Use the forgit tool for a better git experience

Take control of your tmux sessions

The name KDE comes from "K Desktop Environment". For those not familiar with KDE Desktop, it is a free, open-source desktop environment. It provides Linux

Container-diff is an open source product from Google that helps you to analyze and compare container images hosted in Google cloud platform.

Learn what observability is and isn't, how it's different from monitoring, and some key tenets to keep in mind for good observability.

In this guide, we will show you how to check supported TLS and SSL ciphers (version) on opneSUSE system. The same procedure works on other distribution as well.

The most powerful Operating and Best Kept Secret of 2021. There is a new kid on the block, Clear Linux by Intel.

Tekton is a Kubernetes-native continuous integration and delivery (CI/CD) framework. It allows you to create containerized, composable, and configurable workloads declaratively through Kubernetes Custom Resource Definitions (CRD).

GraphQL, the query language invented by Facebook, has attracted a lot of interest as a means to conveniently access data programmatically. GraphQL

Have media files on your computer? You can likely reclaim significant disk space by storing that data in more space-efficient file formats. This article demonstrates how to use Linux line commands to perform the most common space-saving conversions. I use line commands because they give you complete control over compression and format conversion features. Also, you'll need to use line commands if you want to write scripts. That allows you to develop programs that are custom-tailored to your own unique needs.

Quickgui aims to be a simpler alternative to VirtualBox and help create virtual machines quickly. Here's what you need to know about it.

This beginner-friendly, step-by-step guide walks you through the initial configuration of your OPNsense firewall. The title of this guide is an homage to the pfSense baseline guide with VPN, Guest, and VLAN support that some of you guys might know, and this is an OPNsense migration of it. I found that guide two years ago and immediately fell in love with the network setup. After researching for weeks, I decided to use OPNsense instead of pfSense.

Despite its shortcomings, it’s best to embrace an evolution strategy for Terraform and not start from scratch.

Analyzing Infrastructure as Code (IaC) to detect cloud misconfigurations is one of the hottest topics in cybersecurity. An entire industry has popped up around this single topic — and for good reason! But today’s IaC tools analyze security configurations in a limited, myopic way that generates noisy alerts and does not help organizations understand their […]

Server and application logging is an important facility for developers, operators, and security teams to understand an application's state running in their production environment. Logging allows operators to determine if the applications and the required components are running smoothly and detect if something unusual is happening so they can react to the situation.

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