#networking | Qezir

Networking Basics: How Computers Find Each Other

IP addresses, MAC addresses, DNS, and routing - explained from scratch. The networking foundation every security beginner needs.

tutorial fundamentals ground-up +1

Jan 30, 2026 · 8 min read

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Ports, Protocols, and Why They Matter for Security

What ports and protocols actually are, which ones matter, and how attackers and defenders use this knowledge. The final networking fundamental.

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Jan 30, 2026 · 9 min read

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What Actually Happens When You Visit a Website

The full chain from URL to rendered page - DNS, TCP handshake, HTTP, and TLS. Understanding the request lifecycle is key to understanding web security.

tutorial fundamentals ground-up +1

Jan 30, 2026 · 9 min read

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