SI-4(11)

Analyze Communications Traffic Anomalies

System and Information Integrity (SI)

Baselines

Low · Not includedModerate · Not includedHigh · Not included

Description

Analyze outbound communications traffic at the external interfaces to the system and selected [assignment] to discover anomalies.

Discussion

Organization-defined interior points include subnetworks and subsystems. Anomalies within organizational systems include large file transfers, long-time persistent connections, attempts to access information from unexpected locations, the use of unusual protocols and ports, the use of unmonitored network protocols (e.g., IPv6 usage during IPv4 transition), and attempted communications with suspected malicious external addresses.

Implementation guidance

No content available.

CSF 2.0 crosswalk

No CSF mappings exist for this control.