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SAML Single Sign-On into Joomla using IdentityServer4

miniOrange Joomla SAML SP SSO plugin helps you to integrate your Joomla site to IdentityServer4 using SAML 2.0 protocol. Our user-friendly plugin simplifies the process of setting up Single Sign-on (SSO) with IdentityServer4 in Joomla, ensuring a secure login experience. This enables users to access various Joomla sites effortlessly using their IdentityServer4 IDP credentials.

Our plugin is designed to be compatible with Joomla 3, 4 as well as 5 and works seamlessly with all SAML 2.0 compliant Identity Providers. For a detailed overview of the comprehensive features offered by the Joomla SAML SP plugin, please visit our page here. Below, we provide a step-by-step guide on configuring SAML SSO login between your Joomla site and IdentityServer4, with IdentityServer4 serving as the Identity Provider (IDP) and Joomla as the Service Provider (SP).

What is SSO ?

Single sign-on (SSO) is an authentication method that enables users to access multiple applications with one-click login and one set of credentials. For example, after users log in to your Joomla site, they can automatically access all resources of the Joomla site. The implementation of SSO involves configuring one system to trust another for user authentication, removing the need for users to log in separately to each system. The system that authenticates users is called an Identity Provider. The system that trusts the Identity Provider for authentication is called the Service Provider.
In this context, the system responsible for authenticating users is referred to as the Identity Provider (IDP), while the system relying on the Identity Provider for authentication is known as the Service Provider (SP). When a user initiates a login attempt, the Service Provider sends a SAML request to the Identity Provider. Upon successful IDP authentication, SAML assertions containing user information are transmitted back to the Service Provider. Subsequently, the Service Provider receives the assertion, verifies it based on the Identity Provider configuration, and grants the user access to your Joomla website.

Pre-requisites: Download And Installation

Steps to Integrate IdentityServer4 Single Sign-On (SSO) with Joomla SAML SP

1. Setup Joomla SAML SP plugin

  • Download the zip file for the miniOrange SAML SP plugin for Joomla.
  • Login into your Joomla site’s Administrator console.
  • From left toggle menu, click on System, then under Install section click on Extensions.
  • Now click on Or Browse for file button to locate and install the plugin file downloaded earlier.
  • Install the SAML SP Plugin from your computer
  • Installation of plugin is successful. Now click on Get Started!
  • Start Using miniOrange SAML SP plugin
  • Go to the Service Provider Metadata tab and scroll down to copy the SP-EntityID and the ACS URL.
  • Copy SP-EntityID and ACS URL

2. Configure IdentityServer4 as IdP

Note: To add SAML IDP functionality you would require modifications in the Startup.cs file.

  • In the ConfigureServices method, your call to AddIdentityServer needs to be updated with the following code:

    // the rest of registrations (clients, resources, users, etc)
      .AddSigningCredential(new X509Certificate2(/*your cert*/))
      .AddSamlPlugin(options => {      options.Licensee = "/*your license key org name*/";
         options.LicenseKey = "/*your license key*/";
    .AddInMemoryServiceProviders(new List());

  • In the configure method, the call to UseIdentityServer needs to be extended with following code:


miniorange img Configure IdentityServer4 as Service Provider

  • In the Config.cs file create a Client entry.

    new Client {
       ClientId = "http://localhost:5001/saml",
       ClientName = "RSK SAML2P Test Client",
       ProtocolType = IdentityServerConstants.ProtocolTypes.Saml2p,
       AllowedScopes = { "openid", "profile" } }

    Provide entityID from Service Provider Metadata tab
    Provide Service Provider name
    openid, profile
  • In the Config.cs configure SAML Specifics using Service Provider object.

    new ServiceProvider {
       EntityId = "http://localhost:5001/saml",
       SigningCertificates = {new X509Certificate2("TestClient.cer")},/*Enter the certificate name*/
       AssertionConsumerServices = { new Service(SamlConstants.BindingTypes.HttpPost, "http://localhost:5001/signin-saml") }

    Note: The Client ID and Entity ID must be Equal.

  • You would need the following information from the Service Provider Metadata Here.
  • EntityId
    Provide Entity-Id from Service Provider Metadata tab
    Signing Certificates
    Download the Certificate from Service Provider Metadata tab of the plugin and enter Certificate name
    Assertion Consumer Service URL
    Provide the required Binding type followed by the ACS URL:
    Http Post method: SamlConstants.BindingTypes.HttpPost
    Http Redirect method: SamlConstants.BindingTypes.HttpRedirect
    ACS URL: Provide ACS URL from Service Provider Metadata Tab
  • To configure your Service Provider retrieve IDP Metadata by visiting /saml/metadata URL.
  • You will get the endpoints required for the Service Provider configuration.
  • You have successfully configured IdentityServer4 as SAML IDP ( Identity Provider) for achieving IdentityServer4 SSO login into your joomla Site.

3. Configure Joomla as Service Provider

In Joomla SAML plugin, go to Service Provider Setup tab. There are three ways to configure the plugin:

SAML SSO Single-Sign-On By Uploading Metadata File:

  • In Joomla SAML plugin, go to Service Provider Setup tab, then click on Upload IDP metadata.
  • Upload IDP Metadata

SAML SSO Single-Sign-On By Metadata URL:

  • Enter Metadata URL (Copy from IDP app) and click on Fetch Metadata.
  • Upload IDP Metadata

SAML SSO Single-Sign-On Manual Configuration:

  • Copy SAML Entity ID, SAML Single-Sign-On Endpoint URL and X.509 certificate from Federation Metadata document and paste it in Idp Entity ID or Issuer, Single Sign-on URL, X.509 Certificate fields respectively in the plugin.
IdP Entity ID or Issuer
SAML Entity ID in the Federation Metadata document
Single Sign-On URL
SAML Single-Sign-On Endpoint URL in the Federation Metadata document
X.509 Certificate Value
X.509 Certificate in the Federation Metadata document

    manual Configuration
  • Click on Save button and then Test Configuration button.
  • Save configuration
  • Once the test configuration is successful you will get the following window.
  • Test configuration
  • Congratulations we have successfully configured Joomla SAML Service Provider.

4. Attribute Mapping - This is Premium feature.

  • Attributes are user details that are stored in your Identity Provider.
  • Attribute Mapping helps you to get user attributes from your Identity Provider (IDP) and map them to Joomla user attributes like firstname, lastname, address, phone etc.
  • While auto registering the users in your Joomla site these attributes will automatically get mapped to your Joomla user details.
  • Go to Attribute Mapping tab and fill in all the fields.
  • Username:
    Name of the username attribute from IdP (Keep NameID by default)
    Name of the email attribute from IdP (Keep NameID by default)
    Name of the name attribute from IdP

    Joomla SAML Attribute Mapping
  • You can check the Test Configuration Results under Service Provider Setup tab to get a better idea of which values to map here.

Step 5. Group Mapping - This is Premium feature.

  • Group/Role mapping helps you to assign specific roles to users of a certain group in your Identity Provider (IdP).
  • While auto registering, the users are assigned roles based on the group they are mapped to.
  • Joomla SAML SSO Group Mapping

Step 6. Redirection & SSO Links.

  • Go to Login Settings tab. You can add login Url to Perform SAML SSO in your Joomla site by following the steps below.
  • There are multiple features availabe in this tab like Auto redirect the user to Identity Provider and Enable Backend Login for Super Users. To use these features, click on the respective checkboxes.
  • Joomla Single Sign On SSO SAML SP Signin Settings
  • Click on the Upgrade Plans tab to check out our complete list of features and various licensing plans. OR you can click here to check features and licensing plans.
  • If you want to purchase any of the paid version of the plugin, you have to register/login with us in Account Setup tab. OR you can register/login here.
  • In case, you are facing some issue or have any question in mind, you can reach out to us by sending us your query through the Support button in the plugin or by sending us a mail at
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