Cloud Identity-Aware Proxy (IAP) is a powerful security feature that helps protect your Cloud SQL instances by controlling access at the application layer. Using IAP, organizations can ensure that only authorized users can connect to their databases, reducing the risk of unauthorized access and potential data breaches.

What Is Cloud Identity-Aware Proxy?

Cloud IAP acts as a gatekeeper between users and your Cloud SQL instances. It verifies user identity and enforces access policies before allowing a connection. This means that even if someone has network access, they cannot connect unless they are authorized through IAP.

Prerequisites for Using IAP with Cloud SQL

  • An active Google Cloud account with billing enabled.
  • A Cloud SQL instance set up and running.
  • Proper IAM roles assigned, such as Cloud SQL Client and IAP-secured Web App User.
  • Enable the IAP API in your Google Cloud project.

Configuring Cloud IAP for Cloud SQL

Follow these steps to enable IAP for your Cloud SQL instance:

  • Navigate to the Google Cloud Console and select your project.
  • Go to the "Security" section and select "Identity-Aware Proxy".
  • Find your Cloud SQL instance in the list and click "Edit".
  • Toggle the switch to enable IAP for the instance.
  • Assign appropriate IAM roles to users or service accounts that need access.

Connecting to Cloud SQL via IAP

To connect securely, users should use the Cloud SQL Proxy with IAP support. Here's a typical command:

gcloud command:

gcloud sql connect [INSTANCE_NAME] --user=[USERNAME] --project=[PROJECT_ID] --quiet --tunnel-through-iap

This command establishes a secure connection through IAP, ensuring only authorized users can access the database.

Best Practices for Using IAP with Cloud SQL

  • Regularly review IAM roles and permissions.
  • Enable audit logging to monitor access attempts.
  • Use least privilege principles when assigning roles.
  • Keep your Cloud SQL and IAP configurations up to date.

By properly configuring Cloud IAP, organizations can significantly enhance the security of their Cloud SQL instances, ensuring that only trusted users have access.