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ASP.NET SAML Single Sign-On (SSO) using Absorb LMS 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 need only one password to access your ASP.NET application and services. Our module is compatible with all SAML compliant identity providers. Here, we will go through a step-by-step guide to configure Single Sign-On (SSO) between ASP.NET and Absorb LMS, considering Absorb LMS as IdP. To know more about the other features we provide, click here.

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

Pre-requisites: Download and Installation


PM> Install-Package miniOrange.SAML.SSO -Version 5.3.3
  • 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 SAML SSO connector to your application.
  • ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - saml dll register
  • Register or log in with your account by clicking the Register button to configure the module.

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

1. Configure Absorb LMS as IDP

  • You need to send your SP metadata to identity provider, Absorb LMS. For SP metadata, use the SP metadata URL or download the SP metadata as a .xml file and upload it at your IdP end. You can find both these options under the Service Provider Settings tab.
  • 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:
    • Under Service Provider Settings 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 SAML Single Sign-On (SSO) using Absorb LMS 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 SAML Single Sign-On (SSO) using Absorb LMS as IDP - Manual Metadata
  • Login to the Absorb admin portal as a System Admin and navigate to Portal Settings. From Portal Settings, there is a button in the right-side menu labelled Manage SSO Settings. If you can't see this button, please contact your Absorb Client Success Manager to discuss enabling the feature.
  • ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - manage sso settings
  • Click Add at the bottom of the page.
  • Now in the Name field you can enter some descriptive connection name of your choice. This name is only visible to admins.
  • ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - SP initiated outbound setup
  • In the Method field select SAML.
  • In the Key field enter the Service provider certificate which you can get from the miniOrange SAML plugin under the Service Provider Setup tab.
  • ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - SP certificate
  • In the Id Property field select the Absorb user profile field that Absorb should send as the NameID in the SAML assertion. This should be a unique identifier for learners.
  • The Assertion Consumer Service Url can be left blank as it should be provided to Absorb via the SAML Request. However if you are experiencing issues, you can hard code an ACS URL which you can get from the Service Provider Setup tab of the miniOrange SAML plugin.
  • Set the Signature Type to SHA1.
  • Include User Data: You can opt to send user data from the Absorb LMA to ASP.NET site in addition to the SAML Response by enabling this toggle.
  • If OFF: No attributes will be included in the response.

    If ON: Absorb will append the following LMS attributes to the SAML Response in the AttributeStatement:

    • FirstName
    • LastName
    • Email
    • UserId
    • Username
    • UserExternalId
    • EmployeeNumber
    • JobTitle
    • DepartmentId
    • DepartmentName
    • ExternalDepartmentId
    • IsAdmin
    ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - include user data
  • Include Custom Fields: You can select to include any custom user fields present in the Absorb LMS as part of the attributes returned in the SAML Response.
  • Note: This field is only visible if Include User Data is on.

    ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - include custom fields

2. Configure ASP.NET application as service provider

Note: After installation of the plugin, we need to setup the trust between your ASP.NET application and your Absorb LMS account. SAML metadata is shared with Absorb LMS so they can update their inbuilt configuration to support Single Sign-On.

Import Absorb LMS SAML metadata

  • Select Absorb LMS from the list of identity providers shown below.
  • ASP.NET SAML Single Sign-On (SSO) using Absorb LMS as IDP - search idp
  • There are two methods for configuring ASP.NET as service provider:
  • 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 SAML Single Sign-On (SSO) using Absorb LMS 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 SAML Single Sign-On (SSO) using Absorb LMS as IDP - SAML dll config

3. Testing SAML SSO

  • 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 where you will be redirected to Attribute Mapping section.
  • ASP.NET SAML Single Sign-On (SSO) using Absorb LMS 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 SAML Single Sign-On (SSO) using Absorb LMS 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 SAML Single Sign-On (SSO) using Absorb LMS as IDP - Enable debug logs
    • Once enabled, you will be able to retrieve plugin logs by navigating to Identity Provider 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.

4. Integration Code

  • You can find the Integration code in the Login Settings 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 SAML Single Sign-On (SSO) using Absorb LMS as IDP - integration code
  • If you want some assistance regarding the integration code, get in touch with us aspnetsupport@xecurify.com

5. Login Settings

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

6. Logout Settings

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

You can configure the DNN SAML 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. To check other identity providers, click 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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