What is network forensics?

Network forensics is the process of monitoring network traffic for evidence. This involves capturing, recording, and analyzing network data to identify security incidents, verify compliance with security policies, and gather evidence for potential legal action. In a forensic investigation, professionals closely examine packets traveling through the network to detect unauthorized access, data breaches, or other suspicious activities. This aspect of network security is crucial for understanding how an attack occurred, what vulnerabilities might have been exploited, and how to prevent similar incidents in the future.

The other options, while related to networking and security, do not encapsulate the essence of network forensics. Enhancing network connections refers to improving the performance and efficiency of a network, while optimizing network resources focuses on making the best use of existing resources. Setting up firewalls is a proactive security measure designed to protect a network, but it does not involve the investigative and analytical aspects that define network forensics.