Duo Single Sign-On for One Identity OneLogin

About Duo Single Sign-On

Duo Single Sign-On is our cloud-hosted SSO product which layers Duo's strong authentication and flexible policy engine on top of One Identity OneLogin logins using the Security Assertion Markup Language (SAML) 2.0 or OpenID Connect (OIDC) authentication standards. Duo Single Sign-On acts as an OpenID provider (OP), authenticating your users using existing on-premises Active Directory (AD) or any SAML 2.0 IdP and prompting for two-factor authentication before permitting access to One Identity OneLogin.

Duo Single Sign-On is available in Duo Premier, Duo Advantage, and Duo Essentials plans, which also include the ability to define policies that enforce unique controls for each individual SSO application. For example, you can require that Salesforce users complete two-factor authentication at every login, but only once every seven days when accessing One Identity OneLogin. Duo checks the user, device, and network against an application's policy before allowing access to the application.

Configure Single Sign-On

Before configuring One Identity OneLogin with Duo SSO using OpenID Connect (OIDC) authentication you'll first need to enable Duo Single Sign-On for your Duo account and configure a working authentication source.

Once you have your SSO authentication source working, continue to the next step of creating the One Identity OneLogin application in Duo.

When configuring an application to be protected with Duo Single Sign-On you'll need to send attributes from Duo Single Sign-On to the application. Active Directory will work with no additional setup, but if you used a SAML idenity provider as your authentication source please verify that you configured it to send the correct SAML attributes.

Below you can see the default bridge attributes that automatically map certain attributes from your authentication source.

Bridge Attribute	Active Directory	SAML IdP
<Username>	sAMAccountName	Username
<Email Address>	mail	Email
<Display Name>	displayName	DisplayName
<First Name>	givenName	FirstName
<Last Name>	sn	LastName

Create the One Identity OneLogin Application in Duo

1. Log in to the Duo Admin Panel and navigate to Applications → Protect an Application.

2. Locate the entry for One Identity OneLogin with a protection type of "2FA with SSO hosted by Duo (Single Sign-On)" in the applications list. Click Protect to the far-right to start configuring One Identity OneLogin. See Protecting Applications for more information about protecting applications with Duo and additional application options. You'll need the information on the One Identity OneLogin page under Metadata later.

3. No users can log in to new applications until you grant access. Update the User access setting to grant access to this application to users in selected Duo groups, or to all users. Learn more about user access to applications. If you do not change this setting now, be sure to update it so that your test user has access before you test your setup.

4. The Metadata section contains OpenID provider information about Duo Single Sign-On you will provide to One Identity OneLogin at a later configuration step.

5. Scopes are used by One Identity OneLogin during authentication to authorize access to a user's details. Each scope returns a set of user attributes (claims) that must be mapped to IdP attributes. When an application sends an OIDC request to Duo SSO, the response sends only the claims from the requested scopes.

   We've automatically enabled the following scopes and mapped the listed attributes. You can change the attribute sent from your authentication source by modifying the IdP Attribute name related to each claim:

   • Profile Scope:

     IdP Attribute	Claim
     <Username>	username
     <First Name>	given_name
     <Last Name>	family_name
     <Display Name>	name

   • Email Scope:

     IdP Attribute	Claim
     <Email>	email

   

6. You can adjust additional settings for your new SSO application at this time — like changing the application's name from the default value, enabling self-service, or assigning a group policy.

7. Keep the Duo Admin Panel tab open. You will come back to it later.

Duo Universal Prompt

The Duo Universal Prompt provides a simplified and accessible Duo login experience for web-based applications, offering a redesigned visual interface with security and usability enhancements.

Universal Prompt	Traditional Prompt

The Duo One Identity OneLogin application supports the Universal Prompt by default, so there's no additional action required on your part to start using the newest authentication experience.

Activate Universal Prompt

Activation of the Universal Prompt is a per-application change. Activating it for one application does not change the login experience for your other Duo applications. Universal Prompt is already activated for new One Identity OneLogin applications at creation.

The "Universal Prompt" area of the application details page shows that this application's status is "Activation complete", with these activation control options:

• Show traditional prompt: Your users experience Duo's traditional prompt via redirect when logging in to this application.
• Show new Universal Prompt: (Default) Your users experience the Universal Prompt via redirect when logging in to this application.

The application's Universal Prompt status shows "Activation complete" both here and on the Universal Prompt Update Progress report.

For the time being, you may change this setting to Show traditional prompt to use the legacy experience. Keep in mind that support for the traditional Duo prompt ended for the majority of applications in March 2024. This option will be removed in the future.

Universal Update Progress

Click the See Update Progress link to view the Universal Prompt Update Progress report. This report shows the update availability and migration progress for all your Duo applications. You can also activate the new prompt experience for multiple supported applications from the report page instead of visiting the individual details pages for each application.

Configure One Identity OneLogin

1. Log into your One Identity OneLogin account as an administrator.

2. At the top of the page, navigate to Authentication → Trusted IdPs. The "Trusted IdPs" page opens.

3. In the top-right corner of the page, click New Trust.

4. In the top-left corner of the page, enter a unique name for your identity provider into the Untitled Trustedidp field and then click the green checkmark icon.

5. In the "Configurations" section, click the Sign users into OneLogin checkbox.

6. Return to the Duo Admin Panel. Under "Metadata", copy the Issuer URL and paste it into the One Identity OneLogin Issuer field.

7. In One Identity OneLogin, scroll down to the "Protocol" section. Click the Protocol Type drop-down menu and select OIDC.

8. Scroll up to the "User attribute" section. Type {tidp.email} into the User Attribute Value field.

9. Make sure Email is selected in the User Attribute Mapping drop-down menu.

10. Scroll down to the "OIDC Configurations" section. Make sure POST is selected in the Token Endpoint Auth. Method drop-down menu.

11. Return to the Duo Admin Panel. Under "Metadata", do the following:

    • Copy the Authorization URL and paste it into the One Identity OneLogin Authentication Endpoint field.

    • Copy the Token URL and paste it into the One Identity OneLogin Token Endpoint field.

    • Copy the UserInfo URL and paste it into the One Identity OneLogin User Information Endpoint field.

    • Copy the Client ID and paste it into the One Identity OneLogin Client Id field.

    • Copy the Client Secret and paste it into the One Identity OneLogin Client Secret.

12. In One Identity OneLogin, type openid profile email into the Scopes field.

13. Scroll up to the "Enable/Disable" section. Click the Enable Trusted IDP checkbox.

14. Return to the Duo Admin Panel. Under "Relying Party", type https://your-subdomain.onelogin.com/access/idp into the Sign-In Redirect URLs field. Replace your-subdomain with your One Identity OneLogin subdomain.

    

15. In the Duo Admin Panel, scroll down to the bottom of the page and click Save.

Just-in-Time Provisioning

1. Return to One Identity OneLogin. In the sidebar menu, click JIT.

2. In the One Identity OneLogin "Just-in-time provisioning" section, click the Enable checkbox.

3. In the "Attribute mappings" section, make sure Email is selected in the drop-down menu in the "User Field" column.

4. Type {tidp.email} into the empty field in the "TIDP Value" column, next to Email.

5. Type {tidp.given_name} into the empty field in the "TIDP Value" column, next to "Firstname".

6. Type {tidp.family_name} into the empty field in the "TIDP Value" column, next to "Lastname".

7. Click + to add an additional row. Click the drop-down menu in the "User Field" column and select Username.

8. Type {tidp.username} into the empty field in the "TIDP Value" column, next to Username.

9. Click + to add an additional row. Click the drop-down menu in the "User Field" column and select Name.

10. Type {tidp.name} into the empty field in the "TIDP Value" column, next to Name.

11. In the top-right corner of the page, click Save.

12. In the "Name" column, click your identity provider.

13. In the top-right corner of the page, click the More Actions drop-down menu and select Set as default Trusted IdP. The "Use this Trusted IdP as default?" pop-up window opens.

14. Click Confirm.

Learn more about One Identity OneLogin SSO at OneLogin Support.

Using SSO

You can log on to One Identity OneLogin SSO by navigating to your One Identity OneLogin SSO page e.g., https://your-subdomain.onelogin.com. You will be automatically redirected to Duo Single Sign-On to begin authentication.

Exclude Duo Authentication Factor Users

If you deployed or plan to deploy the Duo Universal Prompt Authentication Factor solution in OneLogin, make sure you do not apply a policy that requires Duo Auth Factor for any users who will log in via Duo SSO with OIDC.

Active Directory Login

With Active Directory as the Duo SSO authentication source, enter the primary username (email address) on the Duo SSO login page and click or tap Next.

Enter the AD primary password and click or tap Log in to continue.

Enable Duo Passwordless to log in to Duo SSO backed by Active Directory authentication without entering a password in the future.

SAML Login

With another SAML identity provider as the Duo SSO authentication source, Duo SSO immediately redirects the login attempt to that SAML IdP for primary authentication. Users do not see the Duo SSO primary login screen.

Duo Authentication

Successful verification of your primary credentials by Active Directory or a SAML IdP redirects back to Duo. Complete Duo two-factor authentication when prompted and then you'll return to One Identity OneLogin to complete the login process.

* Universal Prompt experience shown.

One Identity OneLogin supports SP-initiated authentication only, meaning that you must start your SSO login from that application's sign-in page. You won't be able to add as an application tile in Duo Central for IdP-initiated logins.

Congratulations! Your One Identity OneLogin users now authenticate using Duo Single Sign-On.

See the full user login experience, including expired password reset (available for Active Directory authentication sources) in the Duo End User Guide for SSO.

Grant Access to Users

If you did not already grant user access to the Duo users you want to use this application be sure to do that before inviting or requiring them to log in with Duo.

Enable Remembered Devices

To minimize additional Duo two-factor prompts when switching between and your other Duo Single Sign-On SAML applications, be sure to apply a shared "Remembered Devices" policy to your SAML applications.

Troubleshooting

Need some help? Try searching our Knowledge Base articles or Community discussions. For further assistance, contact Support.