Routing and gateway. How an envelope finds its way

Everything “not for our home” a device hands to the gateway, and traceroute shows which routers the envelope passes next. Bring the internet back to a laptop with a wrong gateway.

Diagram of routing: a laptop hands its packet to the default gateway, the routing table picks the next hop, and traceroute lights the path through routers.

Networking for vibe coders — Networking from scratch on a live diagram: from home Wi-Fi to your own site on the internet