Foundations
The networking, Linux and web basics everything else sits on. Start here if you're brand new.
Networking & ports
IPs, ports and TCP vs UDP — the ground everything stands on.
beginnerHow HTTP works
Requests, responses, methods and why the web is stateless.
beginnerHTTP status codes
What the numbers mean, and what they tell you during a test.
beginnerEncoding vs encryption vs hashing
Three things that get confused constantly. What each is and isn’t.
beginnerLinux for pentesters
The handful of shell skills you’ll use every single day.
beginnerWhat is a shell?
Bind vs reverse shells, and why reverse ones actually work.
beginner