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SAML Single Sign-On (SSO) For ASP.NET Web Applications Using OneLogin As IDP

SAML Single Sign-On (SSO) For ASP.NET Web Applications Using OneLogin As IDP

ASP.NET SAML SP 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.

Pre-requisites : Download And Installation

  • Download miniOrange ASP.NET SAML 2.0 Module.
  • To set up the module, extract the file asp.net-saml-sso-module-xxx.zip. You will find a DLL named miniorange-saml-sso.dll, a configuration file named saml.config and an integration.md file which contains steps for adding the module into your application.
  • Add miniorange-saml-sso.dll into your bin folder (where other DLL files for your application exist).
  • Register minorangesamlsso module in your application according to the steps provided in the file named integration.md.
  • Add the provided configuration file saml.config in the root directory of your 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 SAML SSO connector to your application.
    • saml dll register
  • Register or log in with your account by clicking the Register button to configure the module.

Steps to configure OneLogin Single Sign-On (SSO) Login into ASP.NET

1. Add OneLogin in ASP.NET SAML Module

  • Go to Plugin settings section and Choose OneLogin from the list.
    • onelogin SAML SSO , search idp
  • You will see the Service Provider Settings option, where you will get the service provider metadata. You can have three options to provide the metadata to your IDP. Keep the metadata handy as it will be required later to configure step 2.
    • onelogin SAML SSO find metadata

2. Configure OneLogin as Identity Provider

  • Go to https:// <your_domain>.onelogin.com and login into OneLogin.
  • Log into OneLogin as an Administrator and go to Apps Company Apps Add Apps from the Navbar.
    • ASP.NET Onelogin SAML SSO - add_application-OneLogin
  • In the search box, type SAML Test Connector (SP) and click on the App to add it.
    • ASP.NET Onelogin SAML SSO - Search_app-OneLogin
  • 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:
    • ASP.NET Onelogin SAML SSO - App_configuration-OneLogin
    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) URLfrom 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.

miniorange img   Assigning Groups/People

  • Go to SSO tab. Note down the URL/Endpoints. These will be required while configuring the ASP.NET SAML Module.
    • ASP.NET Onelogin SAML SSO - Enable SAML SSO-OneLogin ASP.NET Onelogin SAML SSO - Add Certificate_X.509-OneLogin
  • You have now successfully configured OneLogin as IDP

3. Configure ASP.NET SAML Module as Service Provider

  • Go to the miniOrange ASP.NET SAML 2.0 SSO module and click on Upload IDP Metadata button.
    • Office 365 ( Microsoft Azure AD) SAML SSO with Office 365 as IDP, go to module
  • In the Metadata URL option, Paste the Metadata URL which you have copied from your IDP and click on Fetch Metadata button.
    • onelogin SAML SSO with Office 365 as IDP,: metadata url
  • Click Save to save your IDP details.
    • onelogin SAML SSO with Office 365 as IDP, : save button

4. User Attribute Mapping

User Attribute Mapping is mandatory for enabling users to successfully login into ASP.NET application. We will be setting up user profile attributes for ASP.NET applications using below settings.

  • Click on the Test Configuration button to test whether the SAML Configuration you’ve done is correct. On successful test configuration, you will get the different user attributes returned by your identity Provider in a test configuration table.
    • asp.net saml ssoonelogin : test configuration settings
    asp.net saml sso onelogin : test configuration settings
  • Once you see all the values in test configuration table, click on Configure Attribute Mapping button.
    • asp.net saml sso onelogin : attribute mapping
  • You will be redirected to the Attribute Mapping section where you can see that the user attribute as an autofield.If you want to change it you can do so.
  • Note: All the mapped attributes will be stored in the session so that you can access them in your application.
  • Click on Save Attribute Mapping button.
    • asp.net saml sso onelogin : attribute mapping

6. Integration Code

  • You can also 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 saml sso azure: integration code

7. 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>

8. 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 DotNetNuke 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.


If you are looking to Single Sign-On into your sites with any SAML compliant Identity Provider then we have a separate solution for that. We do provide SSO solutions for the following:

Application LINK
SAML SSO into DotNetNuke (DNN) site Click here
SAML SSO into SiteFinity site Click here
SAML SSO into Umbraco site Click here

Additional Resources

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