August 2025
Intermediate to advanced
272 pages
6h 14m
English
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Appendix 4DNS Protocol Details
The textual protocol in use for DNS is worth peeking at. It’s simple enough, and it tells you a lot about the protocol itself. The protocol is symmetrical, meaning that the message format is the same for messages from server to client and the other way around. Let’s look at the breakdown of a message, which is made of a header and a body.
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