Configuring OpenID Connect in Azure API Management (APIM) involves several best practices to ensure secure and efficient authentication and authorization for your APIs. Here are some key considerations:
1. Create an Azure AD Application:
- Register an application in Azure Active Directory (AAD) to represent your API. This application will be used to configure OpenID Connect in APIM[3].
- Ensure the application is marked as multi-tenant if you plan to use it with the developer portal[3].
2. Configure OpenID Connect Authorization:
- In the Azure portal, navigate to your APIM instance and add a new OpenID Connect authorization server under the "OpenID Connect" section[1][3].
- Provide the OpenID Connect metadata endpoint URL for your Azure AD tenant, typically in the form `https://login.microsoftonline.com/{tenant-id}/.well-known/openid-configuration`[1][3].
- Enter the client ID and client secret of the Azure AD application you created[1][3].
3. Configure Redirect URIs:
- In the Azure AD application, add the redirect URIs for both authorization code and implicit grant flows. These URIs are typically provided by APIM during the OpenID Connect setup[1][3].
4. Enable OpenID Connect for Your API:
- In APIM, select the API you want to protect and go to its settings. Under security, choose OAuth 2.0 and select the OpenID Connect authorization server you configured[1].
5. Validate JWT Tokens:
- Use the `validate-jwt` policy in APIM to validate JWT tokens sent in the Authorization header. This policy checks the token's audience claim to ensure it matches your backend application's client ID[5][8].
- Consider using named values or Azure Key Vault to securely store sensitive information like the OpenID Connect URL, audience, and issuer[6].
6. Testing and Monitoring:
- Test your API using the APIM developer portal to ensure that OpenID Connect authentication works correctly[3].
- Monitor API traffic and authentication flows to identify any issues or security vulnerabilities[7].
By following these best practices, you can effectively secure your APIs with OpenID Connect in Azure APIM.
Citations:
[1] https://www.cloudfronts.com/uncategorized/securing-an-api-using-open-id-connect-from-aapim-part-2-configure-setup-and-enable-open-id-connect-in-the-developer-console/
[2] https://stackoverflow.com/questions/77698997/configure-azure-apim-application-with-oauth-2-0-which-will-secure-api-with-jwt-t
[3] https://winterdom.com/2017/11/11/openid-connect-api-management
[4] https://www.liatrio.com/resources/blog/azure-api-management-okta-integration
[5] https://learn.microsoft.com/en-us/azure/api-management/api-management-howto-protect-backend-with-aad
[6] https://stackoverflow.com/questions/72716297/can-the-openid-config-url-audience-issuer-value-in-the-azure-apim-policies-be/72716409
[7] https://techcommunity.microsoft.com/discussions/azure/api-management-service-secure-configuration-for-standard-v2-sku/4336449
[8] https://learn.microsoft.com/en-us/azure/api-management/authentication-authorization-overview