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Logging metric filter and alert for network changes should be configured Affecting Cloud Platform service in Google

Severity

0.0
medium
0
10
    Severity Framework
    Snyk CCSS
    Rule category
    Logging / Logging

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    Frameworks
    CIS-Google HIPAA ISO-27001 NIST-800-53 PCI-DSS SOC-2
  • Snyk ID SNYK-CC-00439
  • credit Snyk Research Team
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Description

Logging metric filter and alert for network changes should be configured. Network traffic flow can be impacted when a network is created, modified, or deleted, or when a network peering connection is created or deleted. Such changes can also indicate suspicious activity. Monitoring changes to VPCs can help detect anomalous actions and ensure traffic flow is not impacted.

How to fix?

Logging metric filter and alert for network changes should be configured.

Example Configuration

resource "google_logging_metric" "logging_metric" {
  name   = "logging_metric"
  filter = "resource.type=gce_network AND protoPayload.methodName:\"compute.networks.insert\" OR protoPayload.methodName:\"compute.networks.patch\" OR protoPayload.methodName:\"compute.networks.delete\" OR protoPayload.methodName:\"compute.networks.removePeering\" OR protoPayload.methodName:\"compute.networks.addPeering\""

  metric_descriptor {
    value_type  = "INT64"
    metric_kind = "DELTA"
  }
}

resource "google_monitoring_alert_policy" "alert_policy" {
  depends_on   = [google_logging_metric.logging_metric]
  display_name = "Alert Policy"
  combiner     = "OR"
  conditions {
    display_name = "condition"
    condition_threshold {
      filter     = "resource.type=\"global\" metric.type=\"logging.googleapis.com/user/logging_metric\""
      duration   = "60s"
      comparison = "COMPARISON_GT"
    }
  }
}