Detection: Compute Subnetwork Flow Logs Disabled

Overview

Detect when Compute Subnetwork flow logs were disabled in Compute Engine. Disabling flow logs reduces network visibility and may hinder threat detection. Monitoring these actions helps maintain network observability.

References:

Usage

Run the detection in your terminal:

powerpipe detection run gcp_audit_log_detections.detection.compute_subnetwork_flow_logs_disabled

Snapshot and share results via Turbot Pipes:

powerpipe login
powerpipe detection run gcp_audit_log_detections.detection.compute_subnetwork_flow_logs_disabled --share

SQL

This detection uses a named query:

select
  tp_timestamp as timestamp,
method_name as operation,
resource_name as resource,
authentication_info.principal_email as actor,
tp_source_ip as source_ip,
tp_index as project,
tp_id as source_id,
-- Create new aliases to preserve original row data
*

from
  gcp_audit_log
where
  method_name ilike '%.compute.subnetworks.patch'
  and request.enableFlowLogs = 'false'
  and severity != 'Error'
-- TODO: Do we need to check operation?
-- and (operation_src is null or operation_src.last = true)

order by
  timestamp desc;

Detection: Compute Subnetwork Flow Logs Disabled

Overview

Usage

SQL

Tags