IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
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Elastic Docs ›Elastic Security Solution [8.2] ›Detections and alerts ›Prebuilt rule reference

Unusual Linux Network Service

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Unusual Linux Network Service

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Identifies unusual listening ports on Linux instances that can indicate execution of unauthorized services, backdoors, or persistence mechanisms.

Rule type: machine_learning

Machine learning job: linux_anomalous_network_service

Machine learning anomaly threshold: 50

Severity: low

Risk score: 21

Runs every: 15 minutes

Searches indices from: now-45m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References:

Tags:

  • Elastic
  • Host
  • Linux
  • Threat Detection
  • ML

Version: 4 (version history)

Added (Elastic Stack release): 7.7.0

Last modified (Elastic Stack release): 7.12.0

Rule authors: Elastic

Rule license: Elastic License v2

Potential false positives

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A newly installed program or one that rarely uses the network could trigger this alert.

Rule version history

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Version 4 (7.12.0 release)
  • Formatting only
Version 3 (7.10.0 release)
  • Formatting only
Version 2 (7.9.0 release)
  • Formatting only
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