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📝 Google Logging Log Metric Filter and Alerts for VPC Network Changes do not exist 🟢

  • Contextual name: 📝 Log Metric Filter and Alerts for VPC Network Changes do not exist 🟢
  • ID: /ce/ca/google/logging/vpc-network-changes-monitoring
  • Located in: 📁 Google Logging

Flags​

Our Metadata​

  • Policy Type: COMPLIANCE_POLICY
  • Policy Category:
    • SECURITY

Similar Policies​

Logic​

Description​

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Description​

It is recommended that a metric filter and alarm be established for Virtual Private Cloud (VPC) network changes.

Rationale​

It is possible to have more than one VPC within a project. In addition, it is also possible to create a peer connection between two VPCs enabling network traffic to route between VPCs.

Monitoring changes to a VPC will help ensure VPC traffic flow is not getting impacted.

Impact​

Enabling of logging may result in your project being charged for the additional logs usage. These charges could be significant depending on the size of the organization.

Audit​

From Google Cloud Console​

Ensure the prescribed log metric is present:

  1. Go to Logging/Logs-based Metrics by visiting https://console.cloud.google.com/logs/metrics.

  2. In the User-defined Metrics section, ensure at least one metric <Log_Metric_Name> is present with filter text:

     resource.type="gce_network" 
     AND (protoPayload.methodName:"compute.networks.insert" 
     OR protoPayload.methodName:"compute.networks.patch"

... see more

Remediation​

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Remediation​

From Google Cloud Console​

Create the prescribed log metric:

  1. Go to Logging/Logs-based Metrics by visiting https://console.cloud.google.com/logs/metrics and click "CREATE METRIC".

  2. Click the down arrow symbol on Filter Bar at the rightmost corner and select Convert to Advanced Filter.

  3. Clear any text and add:

     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")

  4. Click Submit Filter. Display logs appear based on the filter text entered by the user.

  5. In the Metric Editor menu on the right, fill out the name field. Set Units to 1 (default) and Type to Counter. This ensures that the log metric counts the number of log entries matching the user's advanced logs query.

  6. Click Create Metric.

... see more

policy.yaml​

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Linked Framework Sections​

SectionSub SectionsInternal RulesPoliciesFlags
💼 CIS GCP v3.0.0 → 💼 2.9 Ensure That the Log Metric Filter and Alerts Exist for VPC Network Changes - Level 2 (Automated)1
💼 Cloudaware Framework → 💼 Logging and Monitoring Configuration49