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Protocol Explorer

Watch the internet work, packet by packet - interactive lessons from DNS to TLS

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Added by will
November 14, 2026

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Protocol Explorer is a free interactive network simulator. Watch HTTP, HTTPS, TCP, TLS, DNS and 35+ protocols in motion, with every packet decoded byte by byte. Animated lessons in 8 languages make networking concepts easy for students, developers, and anyone curious about how the internet works.

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