Ethical Hacking Essentials Practice Test

Airtun-ng is designed to create a virtual tunnel interface, particularly in the context of wireless networks. This tool is part of the Aircrack-ng suite, which is used primarily for tasks related to WiFi security. By establishing a virtual tunnel, Airtun-ng enables the monitoring of encrypted traffic, allowing users to passively capture packets for analysis. Additionally, it can inject arbitrary traffic, which is crucial for various testing scenarios, such as evaluating network resilience to specific types of attacks.

Wireshark, while an essential tool for traffic analysis, does not create virtual tunnels or engage in traffic injection; it primarily captures and analyzes packet data. Metasploit is focused on penetration testing and exploitation but does not provide the specific functionality of creating virtual tunnel interfaces for monitoring and injecting traffic. Nessus is a vulnerability scanner aimed at identifying security weaknesses, not for intercepting or injecting traffic. Thus, Airtun-ng distinctly fulfills the requirement of creating a virtual tunnel interface, making it the correct choice for the question.