Category Azure

Implement the On Behalf Of flow between an Azure AD protected API and an API protected using OpenIddict

This article shows how to implement the On Behalf Of flow between two APIs, one using Azure AD to authorize the HTTP requests and a second API protected using OpenIddict. The Azure AD protected API uses the On Behalf Of flow (OBO) to get a new OpenIddict delegated access token using the AAD delegated access […]

ASP.NET Core Api Auth with multiple Identity Providers

This article shows how an ASP.NET Core API can be secured using multiple access tokens from different identity providers. ASP.NET Core schemes and policies can be used to set this up. Code: https://github.com/damienbod/AspNetCoreApiAuthMultiIdentityProvider The ASP.NET Core API has a single API and needs to accept access tokens from three different identity providers. Auth0, OpenIddict and […]

Setup application client in Azure App Registration with App roles to use a web API

In Azure AD, a client application with no user (daemon client) which uses an access token to access an API protected with Microsoft Identity needs to use an Azure API Registration with App Roles. Scopes are used for delegated flows (with a User and a UI login). This is Azure AD specific not OAuth2. This […]

Secure ASP.NET Core GRPC API hosted in a Linux kestrel Azure App Service

This article shows how to implement a secure GRPC API service implemented in ASP.NET Core and hosted on an Azure App Service using Linux and kestrel. An application Azure App registration is used to implement the security together with Microsoft.Identity.Web. A client credentials flow is used to acquire an application access token and the GRPC […]

Debug Logging Microsoft.Identity.Client and the MSAL OAuth client credentials flow

This post shows how to add debug logging to the Microsoft.Identity.Client MSAL client which is used to implement an OAuth2 client credentials flow using a client assertion. The client uses the MSAL nuget package. PII logging was activated and the HttpClient was replaced to log all HTTP requests and responses from the MSAL package. Code: […]

Disable Azure AD user account using Microsoft Graph and an application client

This post shows how to enable, disable or remove Azure AD user accounts using Microsoft Graph and a client credentials client. The Microsoft Graph client uses an application scope and application client. This is also possible using a delegated client. If using an application which has no user, an application scope is used to authorize […]

Invite external users to Azure AD using Microsoft Graph and ASP.NET Core

This post shows how to invite new Azure AD external guest users and assign the users to Azure AD groups using an ASP.NET Core APP Connector to import or update existing users from an external IAM and synchronize the users in Azure AD. The authorization can be implemented using Azure AD groups and can be […]

Force MFA in Blazor using Azure AD and Continuous Access

This article shows how to force MFA from your application using Azure AD and a continuous access auth context. When producing software which can be deployed to multiple tenants, instead of hoping IT admins configure this correctly in their tenants, you can now force this from the application. Many tenants do not force MFA. Code: […]

Implement Azure AD Continuous Access (CA) standalone with Blazor ASP.NET Core

This post shows how to force an Azure AD policy using Azure AD Continuous Access (CA) in an ASP.NET Core Blazor application. An authentication context is used to require MFA. The “acrs” claim in the id_token is used to validate whether or not an Azure AD CAE policy has been fulfilled. If the claim is […]

Implement Azure AD Continuous Access (CA) step up with ASP.NET Core Blazor using a Web API

This article shows how to implement Azure AD Continuous Access (CA) in a Blazor application which uses a Web API. The API requires an Azure AD conditional access authentication context. In the example code, MFA is required to use the external API. If a user requests data from the API using the required access token […]