Network forensics is an evolution of a typical digital forensics, in which evidence is collected and analyzed the network traffic. This book will help security and network forensics professionals, as well as a network administrator, understand the challenges faced by organizations and individuals to investigate criminal cases based network. With the explosive growth in Internet-based technologies (eg, social networking, cloud computing, telecommuting), computer and network forensics investigators is one of the fastest area of growth. key skills and network forensics tools are discussed, for example, capture network traffic, using Snort for network-based forensics, using NetWitness Investigator for the analysis of network traffic, and solve the TCP / IP.