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Sandbox·Network Builder

Tool

Network Builder

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This tool is being built

The interactive simulation is coming soon.

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An open, interactive curriculum for computer networking.

v3.0 · MIT22 lessons live

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Simulations

Packet Journey
DNS Lookup
DHCP Simulator
Subnet Calc
Network Builder
Terminal

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

© 2026 Packet.School — MIT licensed☕ Support with a coffeebuilt in the open · last updated 2026.05.14