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A penetration tester is testing a power plant's network and needs to avoid disruption to the grid. Which of the following methods is most appropriate to identify vulnerabilities in the network?
Correct Answer: C
When testing a power plant's network and needing to avoid disruption to the grid, configuring a port mirror and reviewing the network traffic is the most appropriate method to identify vulnerabilities without causing disruptions. * Port Mirroring: * Definition: Port mirroring (SPAN - Switched Port Analyzer) is a method of monitoring network traffic by duplicating packets from one or more switch ports to another port where a monitoring device is connected. * Purpose: Allows passive monitoring of network traffic without impacting network operations or device performance. * Avoiding Disruption: * Non-Intrusive: Port mirroring is non-intrusive and does not generate additional traffic or load on the network devices, making it suitable for sensitive environments like power plants where disruption is not acceptable. * Other Options: * Network Scanner Engine: Active scanning might disrupt network operations or devices, which is not suitable for critical infrastructure. * Testing Framework: Validating vulnerabilities on devices might involve active testing, which can be disruptive. * Network Mapper Tool: Running a network mapper tool (like Nmap) actively scans the network and might disrupt services. Pentest References: * Passive Monitoring: Passive techniques such as port mirroring are essential in environments where maintaining operational integrity is critical. * Critical Infrastructure Security: Understanding the need for non-disruptive methods in critical infrastructure penetration testing to ensure continuous operations. By configuring a port mirror and reviewing network traffic, the penetration tester can identify vulnerabilities in the power plant's network without risking disruption to the grid.