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Elastic Docs ›Elastic Security Solution [8.10] ›Detections and alerts ›Prebuilt rule reference

IPSEC NAT Traversal Port Activity

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IMPORTANT: This documentation is no longer updated. Refer to Elastic's version policy and the latest documentation.

IPSEC NAT Traversal Port Activity

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This rule detects events that could be describing IPSEC NAT Traversal traffic. IPSEC is a VPN technology that allows one system to talk to another using encrypted tunnels. NAT Traversal enables these tunnels to communicate over the Internet where one of the sides is behind a NAT router gateway. This may be common on your network, but this technique is also used by threat actors to avoid detection.

Rule type: query

Rule indices:

  • packetbeat-*
  • auditbeat-*
  • filebeat-*
  • logs-network_traffic.*

Severity: low

Risk score: 21

Runs every: 5m

Searches indices from: now-9m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

References: None

Tags:

  • Tactic: Command and Control
  • Domain: Endpoint
  • Use Case: Threat Detection

Version: 104

Rule authors:

  • Elastic

Rule license: Elastic License v2

Rule query

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(event.dataset: network_traffic.flow or (event.category: (network or network_traffic))) and network.transport:udp and destination.port:4500

Framework: MITRE ATT&CKTM

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