Introduction Running a public-facing server requires constant vigilance, especially when it comes to security. While we often focus on the big-ticket items like firewalls and web server configurations, sometimes it's the smaller, less-known services that can open the...
Introduction Emoticons—now more commonly known as emojis—first gained mainstream popularity thanks to Apple, which integrated them directly into the iOS and macOS keyboard. They quickly became an essential part of daily digital conversations, allowing people to...
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...