Reading the Network: netstat, ss & nmap Explained
Master ss, netstat, and nmap to see every open port, active connection, and service on your system. Real terminal output walkthroughs and pro security tips.
8 articles
Learn DNS, TCP/IP, protocols, troubleshooting, and network fundamentals.
Master ss, netstat, and nmap to see every open port, active connection, and service on your system. Real terminal output walkthroughs and pro security tips.
Why does video lag but emails never arrive broken? The difference between Reliable (TCP) and Fast (UDP) protocols explained.
Every network connection uses a port number. Learn what ports are, why they exist, and how TCP/UDP ports work with real-world analogies and hands-on commands.
The definitive visual guide to the 20 most important network ports. Not just a list — each port comes with real-world context, a story, and a security insight.
Understand IPv4 addresses, subnet masks, public vs private IPs, and CIDR notation with visual diagrams and practical examples.
Understand the OSI Model's 7 layers with real-world analogies, visual diagrams, and practical examples. The foundation of all networking knowledge.
What happens when you type google.com? Follow your data's incredible journey across the internet in this visual guide.
Learn how DNS translates domain names to IP addresses in under 100 milliseconds. Visual guide with step-by-step breakdown.