This comprehensive guide provides step-by-step instructions on downloading, installing, and using Wireshark for network traffic analysis. It covers topics such as packet sniffing, filtering, and protocol analysis. The guide also explores the benefits and risks of using Wireshark for network security. Additionally, it delves into the TCP/IP protocols, packet-switching networks, and packet headers. The guide concludes with an analysis of Wireshark data and an introduction to flow graphs. Recommended for security professionals and network administrators.