An IT network technician has been tasked with analyzing unusual traffic patterns on a corporate network. To capture network traffic for further analysis, which tool or technique should they use?
Wireshark is the correct answer because it is a widely used software tool designed specifically for network protocol analysis and capturing network packets. Its graphical user interface (GUI) allows users to see packet-level detail, apply complex filters, and visualize network traffic, facilitating deep analysis and troubleshooting.
TCPdump is incorrect because, while it is also a powerful packet capture tool, it is command-line based. It is excellent for capturing traffic, especially on remote servers, but is generally less user-friendly for the kind of in-depth, interactive analysis that Wireshark's GUI provides.
NetFlow is incorrect because it captures metadata and statistics about network traffic (like source/destination IPs and ports), not the full content of the packets themselves.
Firewalls are incorrect because they are security devices designed to control and filter network traffic based on predefined rules, not to perform detailed packet capture and analysis.
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