How Packet Analysis Works

In this lecture, you'll learn the mechanics behind packet analysis, how packets are formed, transmitted, and captured using sniffers. The session walks through how data travels across layers of the OSI model, and how sniffers like Wireshark interpret that data. This foundational knowledge sets the stage for performing effective network reconnaissance and traffic inspection.

Key topics:

• Anatomy of a packet (headers, payloads)

• Packet capture using promiscuous mode

• Layer 2 vs Layer 3 traffic visibility

• Intro to Wireshark filtering and interpretation

• Relevance in both offensive and defensive security