Computer Networking

How machines find each other and move bytes between them, from addressing up to the request your browser makes.

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  1. 1

    DNS: turning names into addresses

    What happens between typing a hostname and the first packet leaving your machine.

    Beginner 1 min read
  2. 2

    TCP, UDP and what a port is for

    Two ways to send data, and why one of them checks its work.

    Intermediate 1 min read
  3. 3

    What an IP address actually is

    Addressing, subnets and why 192.168.x.x keeps showing up on your home network.

    Beginner 1 min read