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ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP


ASP.NET Core SAML Single Sign-On (SSO) module gives the ability to enable SAML Single Sign-On for your ASP.NET core applications. Using Single Sign-On you can use only one password to access your ASP.NET core application and services. Our module is compatible with all the SAML compliant Identity providers. Here we will go through a step-by-step guide to configure Single Sign-On (SSO) between ASP.NET Core and Auth0 considering Auth0 as IdP. To know more about the features we provide for ASP.NET Core SSO, click here.

Platform Support: The ASP.NET Core SAML middleware supports ASP.NET Core 2.1 and above. It supports all the ASP.NET Core platforms, including Windows, Linux and macOS.

Pre-requisites: Download And Installation


PM> NuGet\Install-Package miniOrange.SAML.SSO.Middleware -Version 5.0.2

Please refer to the code below for adding SAML middleware in your application's pipeline. The code will differ as per your ASP.NET Core version

  
  using miniorange.saml
  public class Startup
  {
    public void ConfigureServices(IServiceCollection services)
    {
       // Add session services
       services.AddSession();
  
       // Add authentication services
      services.AddAuthentication(CookieAuthenticationDefaults.AuthenticationScheme).AddCookie();
    }
    public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)
    {
      // Your middleware pipeline might differ from the default one
      app.UseHttpsRedirection();
      app.UseStaticFiles();
      app.UseRouting();
      app.UseAuthorization();
      app.MapRazorPages();
  
      app.UseCookiePolicy();
      app.UseSession();
      app.UseAuthentication();
  
      // use miniorange middleware
      app.UseminiOrangeSAMLSSOMiddleware();
      app.Run();
    }
  }
  

Steps to configure ASP.NET Core Single Sign-On (SSO) using Auth0 as IDP

1. Add module on ASP.NET Core application

  • After integration, open your browser and browse the connector dashboard with the URL below:
    https://<your-application-base-url>/?ssoaction=config
  • If the registration page or login page pops up, you have successfully added the miniOrange ASP.NET middleware authentication SAML SSO connector to your application.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - saml dll register
  • Register or log in with your account by clicking the Register button to configure the module.

2. Configure Auth0 as Identity Provider

  • Under the Plugin Settings tab, select Auth0 as your identity provider from the list shown.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Select Auth0 as identity provider

There are two ways detailed below with which you can get the SAML SP metadata to configure onto your identity provider end.

A] Using SAML metadata URL or metadata file:
  • In the Plugin Settings menu, look for Service Provider Settings. Under that, you can find the metadata URL as well as the option to download the SAML metadata.
  • Copy metadata URL or download the metadata file to configure the same on your identity provider end.
  • You may refer to the screenshot below:
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Copy Downloaded Metadata
B] Uploading metadata manually:
  • From the Service Provider Settings section, you can manually copy the service provider metadata like SP Entity ID, ACS URL, Single Logout URL and share it with your identity provider for configuration.
  • You may refer to the screenshot below:
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Manual Metadata
  • Log in to your Auth0 dashboard.
  • Click on Applications.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Navigate to Applications
  • Click on Create Application.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Add or create application
  • A new window will pop-up. Enter a name for the application and select Regular Web App. Click on CREATE button.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Choose regular Web app
  • Select the Addons tab.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Select SAML SSO Add-ons
  • Enable SAML2 option in the addons. It will open up a Configuration window.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Enable SAML 2.0 Add-on webapp
  • Enter Application Callback URL, Audience, Recipient and other settings using SP entity ID and ACS URL copied from the plugin as shown below:
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Add SP entity ID and URL from Plugin
  • Scroll down and click on Save.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Save entity ID
  • Go to the Usage tab and click on the Identity Provider Metadata download link. It will download the metadata XML file which you'll need for setting up the SAML plugin.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - IDP metadata download

You have successfully configured Auth0 as SAML IdP (Identity Provider) for achieving ASP.NET Core SAML SSO.

3. Configure ASP.NET SAML Module as Service Provider

There are two ways detailed below with which you can configure your SAML identity provider metadata in the module.

A] Upload metadata using the Upload IDP Metadata button:
  • If your identity provider has provided you with the metadata URL or metadata file (.xml format only), then you can simply configure the identity provider metadata in the module using the Upload IDP Metadata option.
  • You may refer to the screenshot below:
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Upload Metadata
  • You can choose any one of the options according to the metadata format you have available.
B] Configure the identity provider metadata manually:
  • After configuring your Identity Provider, it will provide you with IDP Entity ID, IDP Single Sign On URL and SAML X509 Certificate fields respectively.
  • Click Save to save your IDP details.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - SAML dll config

4. Test Configuration

  • Click on the Test Configuration button to test whether the SAML Configuration you’ve done is correct.
  • The screenshot below shows a successful result. Click on SSO Integration to further continue with the SSO Integration.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - SAML dll Test configuration
  • If you are experiencing any error on the module end you’ll be shown with the window similar to below.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Enable debug logs
  • To troubleshoot the error you can follow the below steps:
    • Under Troubleshoot tab, enable the toggle to receive the plugin logs.
    • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - Enable debug logs
    • Once enabled, you will be able to retrieve plugin logs by navigating to Plugin Settings tab and clicking on Test Configuration.
    • Download the log file from the Troubleshoot tab to see what went wrong.
    • You can share the log file with us at aspnetsupport@xecurify.com and our team will reach out to you to resolve your issue.

5. Attribute Mapping

  • After testing the configuration, Map your application attributes with the Identity Provider (IdP) attributes.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - attribute mapping

6. Integration Code

  • You can find the Integration code in the Integration Code tab in the module. Just copy-paste that code snippet wherever you want to access the user attributes.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • ASP.NET Core SAML Single Sign-On (SSO) using Auth0 as IDP - integration code
  • If you want some assistance regarding the integration code, get in touch with us aspnetsupport@xecurify.com

7. Login Settings

  • Use the following URL as a link in the application from where you want to perform SSO:
    https://base-url/?ssoaction=login
  • For example, you can use it as:
    <a href=”https://base-url/?ssoaction=login”>Log in</a>

8. Logout Settings

  • Use the following URL as a link to your application from where you want to perform SLO:
    https://base-url/?ssoaction=logout
  • For example, you can use it as:
    <a href=”https://base-url/?ssoaction=logout”>Log out</a>

You can configure the ASP.NET Core SAML 2.0 Single Sign-On (SSO) module with any Identity Provider such as ADFS, Azure AD, Bitium, centrify, G Suite, JBoss Keycloak, Okta, OneLogin, Salesforce, AWS Cognito, OpenAM, Oracle, PingFederate, PingOne, RSA SecureID, Shibboleth-2, Shibboleth-3, SimpleSAML, WSO2 or even with your own custom identity provider. Check the list of identity providers here.

Additional Resources


Need Help?

Not able to find your identity provider? Mail us on aspnetsupport@xecurify.com and we'll help you set up SSO with your IDP and for quick guidance (via email/meeting) on your requirement and our team will help you to select the best suitable solution/plan as per your requirement.

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