Certificate — Packet.School

Home Levels Sandbox Free About

XP0

An open, interactive curriculum for computer networking.

v3.0 · MIT22 lessons live

Learn

Lessons
Sandbox
Levels
Free
About

Simulations

Packet Journey
DNS Lookup
DHCP Simulator
Subnet Calc
Network Builder
Terminal

Project

About
Changelog
GitHub
Contributing
Style guide

Newsletter

One short email when a new level ships. No tracking pixels.

© 2026 Packet.School — MIT licensedSupport with a coffeebuilt in the open