What is a benefit of flexible NetFlow records?

While NetFlow data can be *used* for security analysis, its primary benefit is not inherently "used for security"; rather, it provides data that security tools can leverage.

NetFlow data can be *used* for accounting and billing, but this is an application of the data, not a direct benefit of "flexible" NetFlow's customization itself.

NetFlow traditionally monitors IP traffic, typically from Layer 3 and above, focusing on flow characteristics rather than comprehensive Layer 2-5 packet inspection.

Flexible NetFlow allows users to customize the fields collected in a NetFlow record, enabling tailored traffic identification and analysis beyond the fixed fields of traditional NetFlow, which is a significant benefit for specific monitoring needs.