A security analyst is reviewing the logs from an intrusion detection system (IDS) and needs to correlate these logs with network traffic to understand the scope of a suspected breach. Which of the following will provide the MOST useful information for correlating the time of the suspicious IDS alerts with the network traffic captured?
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Device configuration settings from the network management system
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Application error messages captured by the system's event logs
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User account changes logged in the authentication server records
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Traffic flow metadata collected from network devices such as switches and routers
Traffic flow metadata, including timestamps, source/destination IP addresses, and port numbers, will provide the most useful information for correlating IDS alerts with the captured network traffic. This metadata allows the analyst to match the exact times and paths of the network traffic with the IDS alerts, contributing to a more accurate analysis of the scope and source of the suspected breach. While user account changes, device configurations, and application error messages may offer useful context, they are not as directly correlated with network traffic and timing as traffic flow metadata.
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What is Traffic Flow Metadata?
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How do IDS and network traffic correlation help in security analysis?
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What roles do switches and routers play in collecting traffic flow metadata?