Logging metric filter and alert for network firewall rule changes should be configured Affecting Cloud Platform service in Google
Severity Framework
CCSS (Common Configuration Scoring System) is a set of measures used to determine the severity of the rule.
Snyk CCSS
Rule category
Each rule is associated with a high-level category. For example IAM, Container, Monitoring, Logging, Network, etc.
Logging/ Logging
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- Snyk IDSNYK-CC-00437
- creditSnyk Research Team
Description
Logging metric filter and alert for network firewall rule changes should be configured. Create or Update Firewall rule events indicate network access changes. Configuring a metric filter and alert for these changes may reduce the time it takes to detect suspicious activity.
How to fix?
Logging metric filter and alert for network firewall rule changes should be configured.
Example Configuration
resource "google_logging_metric" "logging_metric_437" {
name = "logging_metric_437"
filter = " resource.type=\"gce_firewall_rule\" AND protoPayload.methodName:\"compute.firewalls.patch\" OR protoPayload.methodName:\"compute.firewalls.insert\""
metric_descriptor {
value_type = "INT64"
metric_kind = "DELTA"
}
}
resource "google_monitoring_alert_policy" "alert_policy" {
depends_on = [google_logging_metric.logging_metric_437]
display_name = "Alert Policy"
combiner = "OR"
conditions {
display_name = "condition"
condition_threshold {
filter = "resource.type=\"global\" metric.type=\"logging.googleapis.com/user/logging_metric_437\""
duration = "60s"
comparison = "COMPARISON_GT"
}
}
}