# Google IAP

Setting up Google IAP authentication will protect all routes of your Livebook instance. It is particularly useful for adding authentication to Livebook instances with deployed notebooks. Google IAP authentication occurs in addition to [Livebook's authentication](../authentication.md) for deployed notebooks and admins.

Once Google IAP is enabled, we recommend leaving the "/public" route of your instances still public. This route is used for integration with the [Livebook Badge](https://livebook.dev/badge/) and other conveniences.

## How to

To integrate your Google Identity-Aware Proxy (IAP) authentication with Livebook,
set the `LIVEBOOK_IDENTITY_PROVIDER` environment variable to `google_iap:<your-jwt-audience>`.

For more information about Google IAP, see https://cloud.google.com/iap/docs/concepts-overview.

Only access with Google accounts is supported. See https://cloud.google.com/iap/docs/authenticate-users-google-accounts.

For more details about how to find your JWT audience, see https://cloud.google.com/iap/docs/signed-headers-howto and look for "Signed Header JWT Audience."