Author: Bob Cechacek
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Ubuntu Server Security Hardening Guide
Complete Documentation for Production VM or VPS (Hetzner/Cloud Environments) Last Updated: November 2025 Target OS: Ubuntu Server (24.04+) Environment: Production VPS Table of Contents 1. User Management & SSH Key Setup 1.1 Generate ED25519 SSH Key (On Your Local Machine) ED25519 is the most secure and modern SSH key algorithm. It’s faster and more secure…
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Dell WD19 USB-C Dock for MacBook Pro with Apple Silicon
Keep in mind there’s Dell WD19, and WD19S. The WD19S is short for shortage. Apparently, Dell had supply chain issues, and made the same dock without 3.5mm audio jacks on the front and on the back (the entre audio IC),. Funnily enought, since it’s a “newer” model, it costs more on a second-hand market. The…
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BetterDisplay CLI (Command Line Interface)
BetterDisplay (at least the free verision) is kind of a mess – it’s unrealistic to toggle resolutions like this regularly. I have no idea if the paid version is any better… it’s certainly not better than a simple toggle. I want to toggle between maybe two or three resolutions. One when I need more space,…