How Networks Work · World 1

How Networks Work

Six levels inside your own home network. You predict, you play, you break it, and you prove it with real Linux output.

Every level

World 1 · The Local Network · playable

  1. 1-1Five Jobs Before a Cat
  2. 1-2Who Lives on Your Street?
  3. 1-3Slice the Pizza
  4. 1-4The Envelope Swap
  5. 1-5Who Has 192.168.1.1?
  6. 1-6The Switch Learns

World 2 · The Web Request · being built, sandboxes open

  1. 2-1Routing Tables
  2. 2-2NAT and Ports
  3. 2-3TCP, UDP, and Ports
  4. 2-4Inside a TCP Connection
  5. 2-5DNS
  6. 2-6HTTP and TLS

World 3 · The Internet · being built, sandboxes open

  1. 3-1Network Troubleshooting
  2. 3-2Firewalls and Stateful Filtering
  3. 3-3Load Balancers and Proxies
  4. 3-4Cloud Networking
  5. 3-5How the Internet Routes
  6. 3-6Your First BGP Mental Model

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