Instruct: Classify the given Amazon review as either positive or negative.
Query: Broader in scope, not just snort

Unlike the "Snort 2.0 Intrusion Detection", this book talks more on intrusion detection. If you are a planner on intrusion detection, this book is a perfect match. If you are the engineer setting up snort, the "Snort 2.0 Intrusion Detection" might be easier to follow.