Lucas and Luna dive into NetFlow and IPFIX, the unsung heroes of network traffic analysis. Using a real-world example of a mid-size e-commerce company that discovered a rogue cryptocurrency miner through NetFlow data, they explain how flow records differ from packet capture, why IPFIX standardized the protocol, and how modern network engineers use these tools for security, capacity planning, and troubleshooting. They also touch on the challenge of scale—how a busy core router can generate terabytes of flow data per day—and the trade-offs between sampling and full capture. This episode is perfect for network engineers curious about visibility beyond SNMP.
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