Duo Single Sign-On for CyberArk Workforce Identity

Overview

As business applications move from on-premises to cloud hosted solutions, users experience password fatigue due to disparate logons for different applications. Single sign-on (SSO) technologies seek to unify identities across systems and reduce the number of different credentials a user has to remember or input to gain access to resources.

While SSO is convenient for users, it presents new security challenges. If a user's primary password is compromised, attackers may be able to gain access to multiple resources. In addition, as sensitive information makes its way to cloud-hosted services it is even more important to secure access by implementing two-factor authentication and zero-trust policies.

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 CyberArk Workforce Identity logins. Duo Single Sign-On acts as an identity provider (IdP), authenticating your users using existing on-premises Active Directory (AD) or another SSO IdP. Duo SSO prompts users for two-factor authentication and performs endpoint assessment and verification before permitting access to CyberArk Workforce Identity.

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 CyberArk Workforce Identity. Duo checks the user, device, and network against an application's policy before allowing access to the application.

Configure Single Sign-On

Before configuring CyberArk Workforce Identity with Duo SSO using Security Assertion Markup Language (SAML) 2.0 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 CyberArk Workforce Identity application in Duo.

Create the CyberArk Workforce Identity Application in Duo

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

2. Locate the entry for CyberArk Workforce Identity 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 CyberArk Workforce Identity. See Protecting Applications for more information about protecting applications in Duo and additional application options. You'll need the information on the CyberArk Workforce Identity page under Downloads later.

3. CyberArk Workforce Identity uses the Mail attribute, Username attribute, and Display name attribute when authenticating. We've mapped the bridge attributes to Duo Single Sign-On supported authentication source attributes as follows:

   Bridge Attribute	Active Directory	SAML IdP
   <Email Address>	mail	Email
   <Username>	sAMAccountName	Username
   <Display Name>	displayName	DisplayName

   If you are using non-standard attributes for your authentication source, check the Custom attributes box and enter the names of the attributes you wish to use instead.

   

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

5. 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

We've already updated the Duo CyberArk Workforce Identity application hosted in Duo's service to support the Universal Prompt, so there's no action required on your part to update the application itself. If you created your CyberArk Workforce Identity application before March 2024, you can activate the Universal Prompt experience for users from the Duo Admin Panel. CyberArk Workforce Identity applications created after March 2024 have the Universal Prompt activated by default.

If you created your CyberArk Workforce Identity application before March 2024, it's a good idea to read the Universal Prompt Update Guide for more information, about the update process and the new login experience for users, before you activate the Universal Prompt for your application.

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.

The "Universal Prompt" area of the application details page shows that this application is "Ready to activate", 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" here and on the Universal Prompt Update Progress report.

Should you ever want to roll back to the traditional prompt, you can return to this setting and change it back to Show traditional prompt. However, this will still deliver the Duo prompt via redirect, not in an iframe. Keep in mind that support for the traditional Duo prompt ended for the majority of applications in March 2024.

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.

Enable CyberArk Workforce Identity for SSO

1. Log into your CyberArk Workforce Identity account.

2. At the top of the left menu sidebar, click the grid icon next to "Identity User Portal" and then click Admin Portal.

3. In the left menu sidebar, click Settings and then click Authentication.

4. Under "Platform", click Security Settings.

5. Scroll down to the "API Security" section and click Add.

6. A blank text field opens. Type *.login.duosecurity.com into the text field.

7. Click Add and then click Save.

8. In the left menu sidebar, click Settings and then click Users.

9. Under "Sources", click External Identity Providers and then click Add. The "External Identity Providers" window opens.

10. Enter a unique name into the External Identity Provider Name field.

11. Under "Federation Domains", click Add. A blank text field opens.

12. Enter your domain into the blank text field and then click Add.

    Example: If your email addresses are username@acme.com, you would type acme.com as the domain name.

    

13. In the left menu sidebar of the "External Identity Providers" window, click Inbound Metadata.

14. Return to the Duo Admin Panel. Copy the IDP Configuration URL and paste it into the CyberArk Workforce Identity Option 1: Upload IDP configuration from URL field.

    

15. In the left menu sidebar of the "External Identity Providers" window, click Outbound Metadata and then click Option 3: Manual Configuration.

16. Copy the Service Provider Authentication Response URL and paste it into the Duo Admin Panel Service Provider Authentication Response URL field.

17. Return to the "External Identity Providers" window. Copy the "Subject" line under "Service Provider Certificate Authority" and paste it into the Duo Admin Panel Service Provider Certificate Authority field.

    

18. Scroll to the bottom of the Duo Admin Panel and click Save.

19. Return to the "External Identity Providers" window. In the left menu sidebar, click Authentication.

20. Under the "Map federated user to existing directory user", click Optional from the drop-down menu.

21. Check the Update cloud users with federated user attributes, Add mapped users to federated groups, and Allow mapping to users in other federations checkboxes.

    

22. Click Save. The status for your added external identity provider is now Active.

Learn more about CyberArk Workforce Identity SSO at CyberArk Identity Online Help.

Using SSO

You can log on to CyberArk Workforce Identity by navigating to your CyberArk Workforce Identity SSO page e.g., https://customerid.id.cyberark.cloud/. Enter your username and click Next to be redirected to Duo Single Sign-On to begin authentication.

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 CyberArk Workforce Identity to complete the login process.

* Universal Prompt experience shown.

You can also log into CyberArk Workforce Identity using Duo Central, our cloud-hosted portal which allows users to access all of their applications in one spot. Link to CyberArk Workforce Identity in Duo Central by adding it as an application tile. Once the tile has been added, log into Duo Central and click the tile for IdP-initiated authentication to CyberArk Workforce Identity.

Congratulations! Your CyberArk Workforce Identity 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.

Enable Remembered Devices

To minimize additional Duo two-factor prompts when switching between CyberArk Workforce Identity 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.