Introduction When it comes to DNS troubleshooting and querying DNS records directly from the command line, the dig (Domain Information Groper) command is an essential tool for system administrators, network engineers, and penetration testers.This cheat sheet provides...
Introduction When you’re working with Linux or macOS, the grep command is one of the most powerful tools in your arsenal for finding text fast. Whether you’re hunting down a config option in /etc, locating error messages in logs, or digging through source code, grep...
Creating an Isolated Internal Network for Virtual Machines 💻 Virtualization offers powerful tools for creating isolated environments. This post will walk you through setting up a custom internal network that's completely cut off from the host operating system (OS) and...
Introduction Just as VirtualBox automatically sets up a default NAT network for its virtual machines, libvirt also provides a default NAT network out of the box, allowing your VMs to access the internet. However, libvirt offers far more flexibility. We can create...
Introduction Virtualization is a powerful tool, but configuring the network to meet your specific needs can sometimes be a challenge. If you've ever used VirtualBox, you're likely familiar with the "Host-only" network—a private, isolated environment where your virtual...
Introduction Do you find yourself working late into the night, only to realize your screen's harsh blue light has been keeping you wide awake? You're not alone. The blue light emitted by computer screens can disrupt your circadian rhythm and make it harder to fall...