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NetFlow is a Cisco-developed protocol that collects and records metadata about IP traffic flows passing through routers and switches. Each flow record includes source/destination IPs, ports, protocol, byte count, and timestamps. NetFlow data enables traffic analysis without capturing full packet contents.
NetFlow is a primary data source for network security monitoring. SOC analysts query NetFlow records to identify unusual traffic patterns, data exfiltration, and lateral movement. Unlike full packet capture, NetFlow is lightweight enough to retain for weeks or months, giving analysts a historical view of network behavior.
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2 public surfaces on the platform reference this term in a meaningful way. Sorted by relevance.
Related glossary entries · 2
Other glossary terms whose definition cites this one.
"…f network packets and counters for traffic analysis. Unlike NetFlow, which tracks complete flows, sFlow samples packets at conf…"
"…malies, and policy violations. NTA tools analyze flow data (NetFlow, sFlow), DNS queries, and packet metadata to identify suspi…"
NetFlow is a Cisco-developed protocol that collects and records metadata about IP traffic flows passing through routers and switches. Each flow record includes source/destination IPs, ports, protocol, byte count, and timestamps. NetFlow data enables traffic analysis without capturing full packet contents.
NetFlow is a primary data source for network security monitoring. SOC analysts query NetFlow records to identify unusual traffic patterns, data exfiltration, and lateral movement. Unlike full packet capture, NetFlow is lightweight enough to retain for weeks or months, giving analysts a historical view of network behavior.
Cybersecurity professionals who work with NetFlow include SOC Analyst, Threat Intelligence Analyst, Incident Responder, Security Engineer. These roles apply NetFlow knowledge within the Networking & Infrastructure domain.
Definitions are original explanations written for career development purposes. For authoritative technical definitions, refer to NIST, ISO, or the relevant standards body.
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