Is it possible to write a custom username/password validator which will be used in the adfs signin method (on the formssignin.aspx page)?
And if so, are there any examples?
This article customizing-the-ad-fs-2-0-sign-in-web-pages shows how to add two factor authentication.
This article modifying-and-securing-the-adfs-2-web-application shows how to create a VS project from the ADFS files on your dev. PC.
ADFS has a Master page and css files as well depending on how far you want to go.
Also, there's some info. here customizing-the-ad-fs-2-0-sign-in-web-pages about other changes you may care to make e.g.
Customizing the Sign-In Pages Using Web.config
ASP.NET Master Pages Overview
Hopefully, that will give you some direction.
ADFS out the box can only authenticate against AD. If you want a custom authentication mechanism, the classic solution is to create a custom STS e.g. Identity Server
Related
I hope its possible someone can point me in the right direction. This is 100% a education issue.
Problem
I need to create a web application at the moment I would like to use with ASP.NET Core MVC or Blazor Server. But I would like to move this to either a Blazor Web Assembly or Angular application in the future.
I am creating what seems to be a very simple web application. Users can sign up and request a licence key. Users can have multiples of these keys. Once a form is filled in this is then awaiting authorization. This part isn't the problem.
I am finding it hard to work out how to and the best way to get this data stored in a database. The licences will be linked to the user stored in the Identity database. I have followed multiple tutorials and tech papers online on how to use authorisation and authentication but none seem to go into details about storing user data. Obviously only the logged in user can view/create their licences and will have no access to anyone else's.
I understand the process will be different for ASP.NET Core MVC/Blazor server and Angular/Blazor WA as these will require an API.
I hope that someone can point me in the right direction as I have been scanning online for 3 days now and kind of need to be put out of my misery.
Thanks in advance.
Below is one of the way to handle.
Create a table with UserId, license, Active, and any other required fields.
Expose a Web API Controller with the Authorize attribute. Only the users with valid JWT tokens will be able to access this Controller.
UserLicensesController will be talking to the table which stores the Licenses.
Use Blazor Web Assembly, OR Angular, OR React JS. Login with valid credentials.
Invoke the Get/Post/Put methods from UI to UserLicensesController Web API, and pass the JWT token.
Please let me know if you need any further assistance.
[19-May-2021] Here is a basic solution.
I have created a basic solution.
UserMgmtStore.sqlproj contains the Database Project.
UserMgmt.API.csproj contains the Web API with JWT authentication.
I am using Auth0 for the authentication and authorization platform.
UserMgmt.Web.csproj contains the Blazor Web Assembly Project.
I have used the Username and Password to retrieve the JWT token from Auth0.
As each individual project with have their own Identity/STS system. I have hard-coded the token just to complete the Proof Of Concept.
I have checked in the POC into my GitHub Repository.
URL: https://github.com/vishipayyallore/mini-projects-2021/tree/master/Projects/UserLicenses
I have a working implementation of IdentityServer4 with custom user stores, etc.
I have an asp.net core web app that I want to require user login for certain pages through the IdentityServer4 instance with my site having full ASP.Net Core Identity functionality e.g. my razor pages accessing User etc.
I have been searching for 3 days and while the internet seems to have lots of resources available on very similar topics, they all do things a little differently. I feel like I just don't know the right keywords to search for.
I have been following many online tutorials such as JWT Authentication on .Net Core and all of the quickstarts on identityserver4.io but they all leave out crucial steps.
IdentityServer is an implementation of oidc, which means that it serves as an independent, central authentication point. Client apps should be unaware of users credentials. That's part of the responsibility of IdentityServer.
So the reason you won't find answers and you think steps are missing, is because you are not implementing oidc.
It is not possible to 'hide' IdentityServer when a user has to login there.
That leaves you with three options:
implement Resource owner password flow. In that case you can collect the credentials and send it to IdentityServer. Please note that there may be security issues when you use this.
Do not use IdentityServer but instead implement Asp.Net Core Identity.
Send information to IdentityServer to identify the client and use custom presentation for that client. In that case the url may be different but the look and feel remains the same.
I am developing kentico application and i need to used windows authentication or claim based authentication depend on the user. If the user is Active directory user user should be able to login using username and password. If the user is not a Active directory user, user redirect to third party site for claim based authentication.
I wonder it is possible to implement this requirement with Kentico 9 CMS. If possible what is the best approach ?
Based on Kentico documentation claims based authentication with AD would work out of the box with just proper settings.
You can start on the following page and links over there should connect you t configuration as well:
https://docs.kentico.com/display/K9/Claims-based+authentication
Aproach Michal suggested would work for third party authentication.
Here is how you can implement AD authentication (quite easy): https://docs.kentico.com/display/K9/Configuring+mixed-mode+authentication
Unfortunately I'm not sure you can mix them together.
Authentication.Execute custom event handler might be a right place to inject your custom implementation for it.
We have an existing MVC application which is used by multiple customers.
Currently, each customer is given a URL to our application e.g. https://myapp/mycustomername.
When they go their, they are presented with a login screen.
For some customers (not all) we want to implement SSO, and authenticate their users against their active directory, so that they never see the login screen (unless the SSO authentication fails).
Most customers won't be using this functionality.
My first question is: is this do-able? Is it possible to have an MVC application which uses both SSO and forms authentication?
If so, can anyone point me to any links explaining the process?
I've seen some good information, such as this tutorial but I can't find anything that matches my scenario.
Thanks.
This is surely a do-able task.
The steps would be
Identify the tenant name from the URL
Get the Identity Setting
If forms authentication, show them the login page
If SSO enabled, redirect to their ADFS URL
When you onboard your tenant, you will have to maintain the following metadata
TenantName
AuthenticationType : {forms / ADFS}
SSO Url
SSO Federation Metadata URL
etc
We did one such implementation that supports ADFS, Social Logins with Forms Authentication too.
I wanted to find out if ADFS2.0 provides a way for users to be authenticated with a Custom Store? Version 1.0 you could only authenticate users in the Windows domain, using Forms/Windows Integrated/Cardspace. I have an ASP.NEt website, which I would like the users to be authenticated against a custom store in SQL and then ADFS2.0 to take care of the claims issued to the user...
That's not entirely true. While in its default form, ADFS v2.0 only allows you to authenticate against Active Directory, there is a hybrid approach. You can set the authentication type to forms (modify the Web.config file of the ASDFS server in the \inetpub\adfs\ls directory).
Once set to forms, you can actually customize the ADFS signin page (FormsSigninPage.aspx) to do whatever custom authentication you want. Once the authentication passes, the rest of ADFS will pick back up where you left off.
Here's an article showing how to do exactly that:
Customizing the ADFS Signin Pages
(Information duplicated from another answer of mine, since the same answer applies here.)
The solution that is suggested in another answer to this same question is a bit misleading. If you read the actual blog post you see that they add an extra STS. AD FS 2.0 has a 'Claims Provider Trust' for that other STS, and redirects to it (if the 'home realm discovery' is set up correctly). That other STS then performs the authentication in whichever way it likes, sends a token back to AD FS, which then runs its claim rules.
So in that solution it is not AD FS 2.0 authenticating against an alternative store, but redirecting to an STS which authenticates against that store.
AD FS 2.0 itself does not allow authentication against a custom authentication store. (See this answer of mine for the official documentation at this point.)
ADFS 2.0 can only authenticate users in Active Directory. It can retrieve attributes from other stores (SQL, LDAP, custom), but not for authentication.
You might want to look at StarterSTS (http://startersts.codeplex.com/) as an alternative.
Eugenio