analyzing-network-flow-data-with-netflow

Instructions

1. Install dependencies: pip install netflow
2. Collect NetFlow/IPFIX data from routers or use the built-in collector: python -m netflow.collector -p 9995
3. Parse captured flow data using netflow.parse_packet().
4. Analyze flows for:
   • Port scanning: single source to many destinations on same port
   • Data exfiltration: high byte-count outbound flows to unusual destinations
   • C2 beaconing: periodic connections with consistent intervals
   • Volumetric anomalies: traffic spikes beyond baseline thresholds
5. Generate a prioritized findings report.

python scripts/agent.py --flow-file captured_flows.json --output netflow_report.json

Examples