Ws federation authentication with asp net core


ASP.NET is a popular programming language used for building web applications. One of the key features of ASP.NET is its support for various authentication mechanisms, including WS-Federation authentication. In this article, we will explore how to implement WS-Federation authentication in an ASP.NET Core application.

What is WS-Federation Authentication?

WS-Federation is a protocol that allows different realms to establish trust and authentication and authorization information. It is widely used in enterprise scenarios where multiple applications need to share user authentication and authorization information.

Setting up WS-Federation Authentication in ASP.NET Core

To WS-Federation authentication in an ASP.NET Core application, we need to the authentication middleware and the necessary configuration settings.

First, let's add the required NuGet package to our project:

dotnet add package Microsoft.AspNetCore.Authentication.WsFederation

Next, we need to configure the authentication middleware in the Startup.cs file:

public void ConfigureServices(IServiceCollection services)
    // Other service configurations

        .AddWsFederation(options =>
            options.MetadataAddress = "";
            options.Wtrealm = "";

    // Other configurations

public void Configure(IApplicationBuilder app, IWebHostEnvironment env)
    // Other app configurations


    // Other configurations

In the above code, we are adding the WS-Federation authentication to the authentication middleware. We provide the metadata address and the relying party realm as configuration options.

Protecting Routes with WS-Federation Authentication

Once we have configured WS-Federation authentication, we can protect specific routes or controllers using the [] .

For example, let's say we have a controller named HomeController with an action method named Index. To protect this action method with WS-Federation authentication, we can add the [Authorize] attribute as follows:

public  Index()
    // Action method logic

With the [Authorize] attribute, the Index action method will only be to authenticated users.


WS-Federation authentication is a powerful mechanism for enabling single sign-on and sharing authentication information across multiple applications. In this article, we explored how to implement WS-Federation authentication in an ASP.NET Core application. We learned how to configure the authentication middleware and protect routes using the [Authorize] attribute. By following these steps, you can easily add WS-Federation authentication to your ASP.NET Core applications.

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