Como ativar o IAP para o App Engine

Nesta página, você vai aprender a proteger uma instância do App Engine com o Identity-Aware Proxy (IAP).

Antes de começar

Para ativar o IAP para o App Engine, você precisará destes elementos:

  • Um Google Cloud projeto do console com o faturamento ativado.

Se você ainda não configurou a instância do App Engine, consulte Como implantar o App Engine para um tutorial completo.

O IAP usa um cliente OAuth gerenciado pelo Google para autenticar usuários. Somente usuários na organização podem acessar o aplicativo ativado IAP app. Se você quiser permitir o acesso a usuários de fora da sua organização, consulte Ativar o IAP para aplicativos externos.

Como ativar o IAP

Console

O cliente OAuth gerenciado pelo Google não está disponível ao ativar o IAP usando o console Google Cloud .

Dynamic include file

If you haven't configured your project's OAuth consent screen, you'll be prompted to do so. To configure your OAuth consent screen, see Setting up your OAuth consent screen.

Setting up IAP access

  1. Go to the Identity-Aware Proxy page.
    Go to the Identity-Aware Proxy page
  2. Select the project you want to secure with IAP.
  3. Select the checkbox next to the resource you want to grant access to.
  4. On the right side panel, click Add principal.
  5. In the Add principals dialog that appears, enter the email addresses of groups or individuals who should have the IAP-secured Web App User role for the project.

    The following kinds of principals can have this role:

    • Google Account: user@gmail.com
    • Google Group: admins@googlegroups.com
    • Service account: server@example.gserviceaccount.com
    • Google Workspace domain: example.com

    Make sure to add a Google Account that you have access to.

  6. Select Cloud IAP > IAP-secured Web App User from the Roles drop-down list.
  7. Click Save.

Turning on IAP

  1. On the Identity-Aware Proxy page, under Applications, find the application you want to restrict access to. To turn on IAP for a resource,
  2. In the Turn on IAP window that appears, click Turn On to confirm that you want IAP to secure your resource. After you turn on IAP, it requires login credentials for all connections to your load balancer. Only principals with the IAP-Secured Web App User (roles/iap.httpsResourceAccessor) role on the project will be given access.

gcloud

Before you set up your project and IAP, you need an up-to-date version of the gcloud CLI. For instructions on how to install the gcloud CLI, see Install the gcloud CLI.

  1. To authenticate, use the Google Cloud CLI and run the following command.
    gcloud auth login
  2. Click the URL that appears and sign in.
  3. After you sign in, copy the verification code that appears and paste it in the command line.
  4. Run the following command to specify the project that contains the applications that you want to protect with IAP.
    gcloud config set project PROJECT_ID
  5. To enable IAP, run the following command.
    gcloud iap web enable --resource-type=app-engine --versions=version
  6. Add principals who should have the IAP-secured Web App user role to the project.
    gcloud projects add-iam-policy-binding PROJECT_ID \
           --member=PRINCIPAL_IDENTIFIER \
           --role=roles/iap.httpsResourceAccessor
    • Replace PROJECT_ID with your project ID.
    • Replace PRINCIPAL_IDENTIFIER with the necessary principals. This can be a type of domain, group, serviceAccount, or user. For example, user:myemail@example.com.

After you enable IAP, you can use the gcloud CLI to modify the IAP access policy using the IAM role roles/iap.httpsResourceAccessor. Learn more about managing roles and permissions.

API

  1. Run the following command to prepare a settings.json file.

    cat << EOF > settings.json
    {
    "iap":
      {
        "enabled":true
      }
    }
    EOF
    

  2. Run the following command to enable IAP.

    curl -X PATCH \
    -H "Authorization: Bearer $(gcloud auth print-access-token)" \
    -H "Accept: application/json" \
    -H "Content-Type: application/json" \
    -d @settings.json \
    "https://appengine.googleapis.com/v1/apps/PROJECT_ID?updateMask=iap"
    

After you enable IAP, you can use the Google Cloud CLI to modify the IAP access policy using the IAM role roles/iap.httpsResourceAccessor. Learn more about managing roles and permissions.

Testar a autenticação do usuário de teste

  1. Depois que a função é concedida, os principais podem acessar o app após a autenticação com o IAP. Acesse o URL do aplicativo usando uma Conta do Google que recebeu o IAP com o papel de usuário do app da Web protegido pelo IAP (roles/iap.httpsResourceAccessor).

  2. Use uma janela anônima no Chrome para acessar o app e faça login quando solicitado. Os usuários que recebem o papel de usuário do app da Web protegido pelo IAP e se autenticam com sucesso podem acessar o app. Os usuários que não recebem o papel necessário ou não conseguem se autenticar não podem acessar o app.