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App Engine에 IAP 사용 설정

이 페이지에서는 IAP(Identity-Aware Proxy)를 사용하여 App Engine 인스턴스를 보호하는 방법을 설명합니다.

시작하기 전에

App Engine에 IAP를 사용 설정하려면 다음이 필요합니다.

결제가 사용 설정된 Google Cloud 콘솔 프로젝트가 있어야 합니다.

App Engine 인스턴스를 아직 설정하지 않은 경우 전체적으로 둘러보려면 App Engine 배포를 참조하세요.

IAP는 Google 관리 OAuth 클라이언트를 사용하여 사용자를 인증합니다. 조직 내 사용자만 IAP가 사용 설정된 애플리케이션에 액세스할 수 있습니다. 조직 외부 사용자에게 액세스를 허용하려면 외부 애플리케이션에 IAP 사용 설정을 참조하세요.

IAP 사용 설정

콘솔

콘솔을 사용하여 IAP를 사용 설정하면 Google 관리 OAuth 클라이언트를 사용할 수 없습니다. 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

Go to the Identity-Aware Proxy page.
Go to the Identity-Aware Proxy page
Select the project you want to secure with IAP.
Select the checkbox next to the resource you want to grant access to.
On the right side panel, click Add principal.
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.
Select Cloud IAP > IAP-secured Web App User from the Roles drop-down list.
Click Save.

Turning on IAP

On the Identity-Aware Proxy page, under APPLICATIONS, find the application you want to restrict access to. To turn on IAP for a resource,
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 accounts with the IAP-Secured Web App User 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.

To authenticate, use the Google Cloud CLI and run the following command.
```
gcloud auth login
```
Click the URL that appears and sign in.
After you sign in, copy the verification code that appears and paste it in the command line.
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
```

To enable IAP, run the following command.

gcloud iap web enable --resource-type=app-engine --versions=version

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

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

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

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.

사용자 인증 테스트

위에서 설명한 대로 IAP 보안 웹 앱 사용자 역할로 IAP에 추가한 Google 계정에서 앱 URL에 액세스합니다. 앱에 무제한 액세스 권한이 있어야 합니다.
Chrome에서 시크릿 창을 사용하여 앱에 액세스하고 메시지가 나타나면 로그인합니다. IAP 보안 웹 앱 사용자 역할로 승인되지 않은 계정으로 앱에 액세스하려고 하면 '지금 액세스할 수 없습니다'라는 메시지가 나타납니다.