Charles Herring of Lancope has a short but interesting post on how NetFlow data can be leveraged for Incident Response purposes.

He says

The collection and analysis of network metadata, such as NetFlow, is an effective way to identify advanced attacks, insider threats or data exfiltration.

There are three major features/activities required by an effective NetFlow management tool:

  • Deduplicate the flow to remove redundant information
  • Directionality to determine the relationship between flow endpoints
  • Robust Querying capabilities

There is a Part 2 coming up soon, which will focus on the Analytics aspects of this.

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