I am trying to figure out how can I call blazor wasm hosted application to my company's AD directory and get user.identity information.i am just running in circles.i don't want to use identity server or azure Ad.can someone please share code. The actual working code. Company policy is not allowing to use sticky sessions so can't use blazor server. Please any help.much appreciated.code would be much appreciated. I am surprised there is no such code out there. I am using .net 5
You'll really struggle to get this to work - from MS website:
We don't recommend using Windows Authentication with Blazor Webassembly or with any other SPA framework. We recommend using token-based protocols instead of Windows Authentication, such as OIDC with Active Directory Federation Services (ADFS).
Reference: https://learn.microsoft.com/en-us/aspnet/core/blazor/security/webassembly/?view=aspnetcore-5.0#windows-authentication
I highly suggest switching to an OIDC implementation instead. ADFS supports this and your company might already have this setup on the network.
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I am implementing a WebApp in our company's intranet with Blazor WebAssembly. I need to make API-Calls to our DevOps Server hosted in our intranet and need to use Windows Authentication to access the API. In the former used WPF Client it was enough to just add the UseDefaultCredentials-Flag on the HttpClient, but that does not work in WebAssembly anymore since the App is running in the browser. The Microsoft Docs state We don't recommend using Windows Authentication with Blazor Webassembly, but not recommend does not mean not support, so it has to be possible somehow, to attach the current App-User's Windows Credentials(Token) to the API Call. Unfortunately there exists no example on the docs page on how to implement this and I have not found any code on how to tackle this, although on some forums people wrote that it is possible, but did not include the How in their comments.
I am using .NET5 for both Server and Client and need to make the Api-Call with Windows Authentication from the Client, not the Server as most examples are using it, as my Server-Project uses the same User for all Requests but I need the User of the Client-Project.
Any kind of help is appreciated.
I have a Blazor WebAssembly app. It's self contained and doesn't use any web API calls. I'd like to add authentication using my existing Azure AD B2C tenant so that only registered users can access the app.
Microsoft says that:
In Blazor WebAssembly apps, authorization checks can be bypassed because all client-side code can be modified by users.
So rather than host my Blazor app statically (the standalone model), I'd like to use the ASP.NET Core hosted model (so an ASP.NET Core app serves the Blazor app to clients). That way I can do the authentication/authorization on the server - if the user is registered and is allowed access to the app, the ASP.NET Core app serves them the Blazor app. If they aren't, they can be shown an error page or be redirected.
The issue is that I'm not sure how to implement this.
When I create a new Blazor WebAssembly Hosted app from the template in Visual Studio 2019, it creates three projects. A shared project, the Blazor project, and a Server project. The Server project has a reference to the Blazor project. This line appears at the end of the Configure method of Startup.cs:
endpoints.MapFallbackToFile("index.html");
This seems to be the thing that makes it serve the Blazor app to the client. I'm not sure how I can add authentication/authorization to this. I tried modifying this line to look like this:
endpoints.MapFallbackToFile("index.html").RequireAuthorization();
But the app still loads without redirecting to a login screen first.
There is some Microsoft documentation called "Secure an ASP.NET Core Blazor WebAssembly hosted app with Azure Active Directory B2C" which sounds like it's what I need, but it's actually still doing the authentication in the Client app while also securing API calls to the Server app (which I don't need).
Is there any way to accomplish what I'm trying to do - authenticating the user on the server before serving the Blazor app, rather than doing that authentication in the Blazor app itself?
The answer was really simple. Actually, the RequireAuthorization() call does work. If you're already logged in to B2C you won't be redirected to the login page first (and, in Edge at least, it doesn't even visibly redirect to B2C first before redirecting back to the app, hence the confusion). But if I load the page in a private browser window I am redirected to the B2C login page - so it must be working as intended.
For future reference, the answer to the title question is:
Add auth to the ASP.NET Core Server app if you haven't already.
In the Server app, add a project reference to the Blazor app.
Add the following line to the UseEndpoints call inside the Configure method in Startup.cs:
endpoints.MapFallbackToFile("index.html").RequireAuthorization();
There seem to be plenty of tutorials on how to use third-party authentication providers for Blazor WebAssembly, but there doesn't seem to be a documented process for using Windows Authentication (on-site Active Directory domain) from an ASP.NET Core hosted server.
Is this actually possible? I would like the Core server to authenticate the user with the roles and policies, and for this information to be accessible from the WebAssembly client also. I understand that the Client can only use authentication to show/hide UI elements, and that any actual securing should be done on the Server, but is there a way to access the Windows authentication/authorization from both sides of the application?
Good afternoon,
I am developing a web application using .Net Core 3.1 and Razor Pages. I have started developing the application using Azure AD to authenticate the user that signs into my application using the project creation wizard. This approach is very easy and user friendly but unfortunately my organization wants the application to authenticate the user by using the local AD server and not the Azure AD one.
I have been googling around but have not found the best way to achieve an authentication such as the one provided by Azure AD but using the local AD server. But haven't found the right literature for this. Could anyone please point me towards the right direction please?
Thank you very much.
I have a MVC web application hosted in IIS and users are stored in Azure AD.
I need to authenticate Azure AD users to access web application.
I am using ADFS for this and installation has been done on Azure.
To authenticate I need to know whether I should go for Window Identity Foundation or OWIN?
In many articles i read WIF has been deprecated and Using OWIN.
Let me know if owin is proper way for my scenario and if some proper examples are available?
Latest version of WIF is 4.5 which is also not available for VS2015
I understood is WS-FED is using SAML Token for this?
Confusion - your MVC application authenticates using Azure AD. Where does ADFS fit in? Have you got a federated tenant?
WIF is still around - people still use it. In VS2015, WIF is built in to .NET. So you can use it.
Yes - WIF (WS-Fed) uses a SAML token.
With OWIN you have a choice - you can use WS-Fed or OpenID Connect (OIDC) or even both.
Unless you are using ADFS 4.0, you need WIF as there is no support for OIDC in the earlier versions.