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User Datagram Protocol (UDP) Packet Header

Lessons Discussion

ReneMolenaar (Rene Molenaar) January 13, 2026, 4:05pm 1

This topic is to discuss the following lesson:

NetworkLessons.com – 13 Jan 26

User Datagram Protocol (UDP) Packet Header

The UDP header is a 8-byte structure that defines port numbers, packet length, and optional checksum for unreliable datagram delivery.

Est. reading time: 6 minutes

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