Securing Compute Engine apps and resources with IAP

This page explains how to secure a Compute Engine instance with Identity-Aware Proxy (IAP) .

To secure resources not on Google Cloud, see Securing on-premises apps and resources .

Before you begin

To enable IAP for Compute Engine, you need the following:

• A Google Cloud console project with billing enabled.
• A group of one or more Compute Engine instances, served by a load balancer.
  • Learn about Setting up an external HTTPS load balancer .
  • Learn about setting up an internal HTTP load balancer .
• A domain name registered to the address of your load balancer.
• Application code to verify that all requests have an identity.
  • Learn about Getting the user's identity .

If you don't have your Compute Engine instance set up already, see Setting up IAP for Compute Engine for a complete walkthrough.

IAP uses a Google-managed OAuth client to authenticate users. Only users within the organization can access the IAP-enabled application. If you want to allow access to users outside of your organization, see Enable IAP for external applications .

You can enable IAP on a Compute Engine backend service or on a Compute Engine forwarding rule . When you enable IAP on a Compute Engine backend service, only that backend service is protected by IAP. When you enable IAP on a Compute Engine forwarding rule, all of the Compute Engine instances behind the forwarding rule are protected by IAP.

Enable IAP on a forwarding rule

You can enable IAP on a forwarding rule by using the load balancer authorization policies framework.

After you enable IAP on a forwarding rule, you can apply permissions to resources .

Enable IAP on a Compute Engine backend service

You can enable IAP on a Compute Engine backend service through that backend service.

Next steps

• Set richer context rules by applying access levels .
• See access requests by enabling Cloud Audit Logs .
• Learn more about IAP .