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Security Operations · Intermediate

Network Detection and Response (NDR)

A solution that analyzes network traffic to detect threats and enable response, often using behavioral analytics.

Definition

NDR tools inspect packet data, flow records and encrypted traffic metadata to spot lateral movement, C2 beaconing, exfiltration and anomalous protocol use. They see devices that cannot run agents such as IoT and OT. Response actions integrate with firewalls and NAC.

Example

NDR flags an unmanaged camera making SMB connections to file servers.

Exam tip

NDR covers agentless devices that EDR cannot see.

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