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Guide to Configure ASP.NET Framework SAML SSO using OneLogin as IDP

ASP.NET SAML Single Sign-On (SSO) module gives the ability to enable SAML Single Sign-On for your ASP.NET applications. Using Single Sign-On you can use only one password to access your ASP.NET 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 and OneLogin considering OneLogin as IdP.

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Platform Support: The ASP.NET SAML SSO module supports ASP.NET 3.5 and above frameworks.


  • To install the miniOrange SAML SSO NuGet package in your .NET application, simply install the miniOrange NuGet package on top of your application.
NuGet Package
.NET CLI

PM> NuGet\Install-Package miniOrange.SAML.SSO

  • After Installation, open your browser and browse the module dashboard with the URL below:
 http(s)<your-dotnet-application-base-url>?ssoaction=config
  • If the registration page or login page pops up, you have successfully added the miniOrange SAML SSO module in your application.
ASP.NET Core- registeration page

  • Register or log in with your account by clicking the Register button to configure the module.
  • After successful registration, you will receive a trial license key on your registered email address.
  • To activate the module, you can either:
    • Enter the license key received via email in the provided input field.

    OR

    • Upload the license file that you downloaded by clicking on the Click Here button.
ASP.NET Framework Verify Trial License

  • Then, check the box "I have read the above conditions and I want to activate the module", and click the Activate License button.
ASP.NET Framework Activate License

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- Service Provider 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- enter sp data manually
  • Go to https://.onelogin.com and login into OneLogin.
  • Log into OneLogin as an Administrator and go to Apps -> Company Apps -> Add Apps from the Navbar.
Company Apps

  • In the search box, type SAML Test Connector (SP) and click on the App to add it.
SAML Test Connector (SP)

  • Enter the display name and click Save.
  • In General Settings, enter App Name and click on Next.
  • After saving, go to Configuration Tab and enter the following:
SAML Test Connector (SP) - Configuration Tab

ACS (Consumer) URL Validator ACS (Assertion Consumer Service) URL from Step2 of the plugin under Identity provider settings Tab.
ACS (Consumer) URL ACS (Assertion Consumer Service) URL from Step2 of the plugin under Identity provider settings Tab.
Single Logout URL Enter Single Logout URL from the Identity Provider Settings tab of the module.
  • Click on Save.

Assigning Groups/People

  • Go to SSO tab. Note down the URL/Endpoints. These will be required while configuring the ASP.NET SAML Module.
Assigning Groups/People Assigning Groups/People

  • You have now successfully configured OneLogin as IDP.

  • Click on the Select your IDP button to configure a new Identity Provider.
ASP.NET Framework SAML SSO using OneLogin as IDP - Add New IDP

  • Under the Plugin Settings tab, select OneLogin as your identity provider from the list shown.
ASP.NET Framework SAML SSO using OneLogin as IDP - Add New IDP

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.
  • 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 Framework - Upload IDP 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 Framework- Configure IDP Manually
  • After uploading the metadata details, navigate to the Identity Provider Settings section. Hover over the Select Actions dropdown and click on Test Configuration.
ASP.NET Core- Test Configuration

  • The screenshot below shows a successful result. Click on SSO Integration to further continue with the SSO Integration.
ASP.NET Framework - Test Configuration

  • If you are experiencing any error on the module end you’ll be shown with the window similar to below.
ASP.NET Framework - Test Configuration Error

  • To troubleshoot the error you can follow the below steps:
  • Under Troubleshoot tab, enable the toggle to receive the plugin logs.
ASP.NET Framework - TroubleShoot

  • 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.
  • After testing the configuration, Map your application attributes with the Identity Provider (IdP) attributes.
  • From the left-hand menu of the miniOrange ASP.NET SAML SSO Module, click on Attribute/Role Mapping tab as shown in the image.
ASP.NET Framework - Attribute Mapping

  • If you want to pass additional attributes from your IdP, enter the Attribute Name and corresponding Attribute Value under Custom Attribute Mapping.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • Once the attributes are mapped, click Save Attribute Mapping to apply changes.
ASP.NET Core- Attribute Mapping
  • This steps allow you to retrieve the SSO user information in your application in the form of session.
  • You can also look the setup tour to understand how the SSO integration would work in your asp.net module application.
  • Just copy-paste that code snippet wherever you want to access the user attributes.
ASP.NET Framework - Integration Code

  • Note: With the trial module the authenticated user details are stored in session variables. Support of setting user claims using Header-based, Forms-Cookie-based, JWT-based authentication is available in our premium plugin.
  • Hover on Select Actions and click on Copy SSO Link.
ASP.NET Framework Copy SSO Link

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

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Please reach out to us at aspnetsupport@xecurify.com, and our team will assist you with setting up the ASP.NET Framework SAML SSO. Our team will help you to select the best suitable solution/plan as per your requirement.

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