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I think this is a good book for a beginner or novice who would really benefit from examining some common use cases for traffic analysis. I feel the uses cases however are pretty simple and straight-forward and would not benefit a benefit a person who already has a year-plus of analysis under their belt. Don't expect this book to elaborate on the the protocol specifications for the protocols in the use cases. So if you are looking at a DNS example, understand how DNS works (via the RFC) before expecting to be able hit-the-ground running diagnosing DNS problems.