Chapter 13

Packet Analysis

Abstract

The analysis phase of Network Security Monitoring is predicated on the analysis of data in order to determine if an incident has occurred. Since most of the data that is collected by NSM tools is related to network activity, it should come as no surprise that the ability to analyze and interpret packet data is one of the most important skills an analyst can have. In this first chapter of the analysis section of this book, we will dive into the world of packet analysis from the perspective of the NSM analyst. The main goal of this chapter is to equip you with the knowledge you need to understand packets at a fundamental level, while providing a framework for understanding the protocols that aren’t covered here. ...

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