Networking, Explained
an interactive guide

Networking,
explained one step at a time.

Six short, click-through lessons on how your data actually finds its way across the internet.

01

DNS Resolution

How a name like example.com becomes an IP address.

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02

The TCP Handshake

Three messages that open a reliable connection.

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03

HTTP Request & Response

The plain-text conversation behind every page load.

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04

TLS Handshake (HTTPS)

How a browser and server agree on encryption.

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05

Load Balancing

Spreading traffic across servers — and around failures.

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06

NAT & Ports

How one public IP serves a whole household.

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