Category ASP.NET Core
ASP.NET Core delegated OAuth Token Exchange access token management
This blog shows how to implement a delegated OAuth 2.0 Token Exchange RFC 8693 flow in ASP.NET Core, and has a focus on access token management. It looks at how the OAuth Token Exchange can be implemented and how an application can request delegated access tokens on behalf of a user and another application, providing […]
ASP.NET Core user application access token management
This article looks at management application access tokens in an ASP.NET Core web application. Any application with or without a user can use application access tokens as long as the application can persist the tokens in a safe way. Code: https://github.com/damienbod/token-mgmt-ui-application Blogs in this series Setup The ASP.NET Core web application authenticates using OpenID Connect […]
ASP.NET Core user delegated access token management
The article looks at managing user delegated access tokens for a downstream API in an ASP.NET Core web application. There are many ways of implementing this, all with advantages and disadvantages. The tokens are requested from an OpenID Connect server using the recommended standards. In this blog, the UI access token from the application authentication […]
Using Entra External ID with an Auth0 OpenID Connect identity provider
This post looks at implementing an Open ID Connect identity provider in Microsoft Entra External ID. Auth0 is used as the identity provider and an ASP.NET Core application is used to test the authentication. Microsoft Entra External ID federates to Auth0. Client code: https://github.com/damienbod/EntraExternalIdCiam Microsoft Entra External ID supports federation using OpenID Connect and was […]
ASP.NET Core and Angular BFF using a YARP downstream API protected using certificate authentication
This article demonstrates how to implement a downstream API protected by certificate authentication using Microsoft YARP reverse proxy in an ASP.NET Core web application. The application uses Angular for its UI and secures both the UI and the ASP.NET Core backend through a backend-for-frontend security architecture. The downstream API is secured with certificate authentication and […]
Implement security headers for an ASP.NET Core API supporting OpenAPI Swagger UI
This article shows how to implement security headers for an application supporting an API and a swagger UI created from a open API in .NET 9. The security headers are implemented using the NetEscapades.AspNetCore.SecurityHeaders Nuget packages from Andrew Lock. Code: https://github.com/damienbod/WebApiOpenApi Deploying a web application which supports both an API and a UI have different […]
Microsoft Entra ID App-to-App security architecture
This article looks at the different setups when using App-to-App security with Microsoft Entra ID (OAuth client credentials). Microsoft Entra App registrations are used to configure the OAuth clients and resources. For each tenant, an Enterprise application is created for the client App registration when the consent is granted. The claims in the access token […]
Implement a Geo-distance search using .NET Aspire, Elasticsearch and ASP.NET Core
This article shows how to implement a geo location search in an ASP.NET Core application using a LeafletJs map. The selected location can be used to find the nearest location with an Elasticsearch Geo-distance query. The Elasticsearch container and the ASP.NET Core UI application are setup for development using .NET Aspire. Code: https://github.com/damienbod/WebGeoElasticsearch Setup For […]
Using Elasticsearch with .NET Aspire
This post shows how to use Elasticsearch in .NET Aspire. Elasticsearch is setup to use HTTPS with the dotnet developer certificates and and simple client can be implemented to query the data. Code: https://github.com/damienbod/keycloak-backchannel Setup Two services are setup to run in .NET Aspire. The first service is the official Elasticsearch docker container and deployed […]
Implement OpenID Connect Back-Channel Logout using ASP.NET Core, Keycloak and .NET Aspire
This post shows how to implement an OpenID Connect back-channel logout using Keycloak, ASP.NET Core and .NET Aspire. The Keycloak and the Redis cache are run as containers using .NET Aspire. Two ASP.NET Core UI applications are used to demonstrate the server logout. Code: https://github.com/damienbod/keycloak-backchannel Setup The applications are run and tested using .NET Aspire. […]
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