During an assessment of industrial equipment, one automated tool reports multiple open ports on a controller, while another scanner does not list them. Which action best clarifies the discrepancy and reveals the actual open ports on that controller?
Run the first tool again with unchanged settings
Review the controller's logs and monitor network traffic
Investigate the equipment documentation for possible scanning issues
Exclude the second scanner's findings from further analysis
Examining logs and reviewing live traffic for the device provides clear evidence of which ports are active. Repeating a previous scan with the same parameters often produces the same results without new data, discarding one tool's output risks missing genuine vulnerabilities, and researching the documentation does not confirm the real-time network condition.
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Why would examining logs and monitoring network traffic clarify discrepancies in open port scans?
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What might cause one scanner to report different open ports than another?
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How does equipment documentation help in troubleshooting scan discrepancies?