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Duo Single Sign-On for Atlassian Cloud

Last Updated: October 6th, 2020

Add two-factor authentication and flexible security policies to Atlassian Cloud SSO logins with Duo Single-Sign On, our cloud-hosted SAML 2.0 identity provider, complete with inline self-service enrollment and Duo Prompt.

Protecting Atlassian Cloud requires a subscription to Atlassian Access. Create and configure an Atlassian Access account before continuing.

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.

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 Atlassian Cloud logins using the Security Assertion Markup Language (SAML) 2.0 authentication standard. Duo Single Sign-On acts as an identity provider (IdP), 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 Atlassian Cloud.

Duo Single Sign-On is available in Duo Beyond, Duo Access, and Duo MFA 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 Atlassian Cloud. Duo checks the user, device, and network against an application's policy before allowing access to the application.

Configure Single Sign-On

Before configuring Atlassian Cloud 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 Atlassian Cloud application in Duo.

Create the Atlassian Cloud Application in Duo

  1. Log on to the Duo Admin Panel and navigate to Applications.

  2. Click Protect an Application and locate the entry for Atlassian Cloud 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 Atlassian Cloud. See Protecting Applications for more information about protecting applications in Duo and additional application options. You'll need the information on the Atlassian Cloud page under Metadata later.

  3. Leave this page open as you'll need this information later.

Duo Universal Prompt

Duo's next-generation authentication experience, the Universal Prompt, is coming to web-based applications that display the current Duo Prompt in browsers.

Migration to Universal Prompt for your Atlassian Cloud application is a two-step process:

  • Update the Atlassian Cloud application to support the Universal Prompt.
  • Enable the Universal Prompt experience for users of that Atlassian Cloud application (when the Universal Prompt becomes available)

We've already updated the Duo Atlassian Cloud application to support the Universal Prompt when it's ready, so there's no action required on your part to update. The "Universal Prompt" section of this application's details page in the Admin Panel reflects this status today as "New Prompt Ready".

Universal Prompt Info - Application Updated

When the Universal Prompt becomes available, you'll return here to activate it for users of this application.

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 in-scope for Universal Prompt support.

Read the Universal Prompt Update Guide for more information about the update process to support the new prompt, and watch the Duo Blog for future updates about the Duo Universal Prompt.

Configure Atlassian Cloud SSO

Add Duo Single Sign-On as a new single sign-on provider for Atlassian Cloud.

  1. While logged into Atlasssian Cloud as an administrator click on Security in the left-hand navigation and then click SAML single sign-on.

  2. On the "SAML single sign-on" page click Add SAML configuration. A new page will appear.

  3. Copy the Identity Provider Entity ID from the Duo Admin Panel Metadata section and paste it into the Atlassian Cloud Identity provider Entity ID field.

    Example: https://sso-abc1def2.sso.duosecurity.com/saml2/sp/DIABC123678901234567/sso

  4. Copy the Identity Provider Issuer information from the Duo Admin Panel Metadata section and paste it into the Atlassian Cloud Identity provider SSO URL field.

    Example: https://sso-abc1def2.sso.duosecurity.com/saml2/sp/DIABC123678901234567/metadata

  5. Click Download certificate next to "Public Certificate" on the Duo Admin Panel under Downloads to download the Duo Single Sign-On signing certificate. Open the certificate file in a text editor (like Notepad), and copy the entire contents of the file (including the -----BEGIN CERTIFICATE----- and -----END CERTIFICATE----- lines). Paste the certificate file text into the Public x509 certificate field in Atlassian Cloud.

  6. Click Save configuration. You’ll be returned to the “SAML single sign-on” page with more options.

    Atlassian Cloud Single Sign-On Settings Page

  7. Locate SP Entity ID and copy everything after https://auth.atlassian.com/saml. If your SP Entity ID was “https://auth.atlassian.com/saml/a12345b6-cd78-9ef0-ghij-k1l234567890” you would copy “a12345b6-cd78-9ef0-ghij-k1l234567890”. You'll need this information later.

    Atlassian Cloud Single Sign-On Settings Page Continued

Learn more about Atlassian Cloud SSO at Atlassian Cloud Support.

Configure Atlassian Cloud in Duo

  1. Return to the Duo Admin Panel page with the Atlassian Cloud application open.

  2. Enter the subdomain used when logging into your company’s Atlassian Cloud account as the Atlassian Cloud Subdomain. For example, if your Atlassian Cloud login URL is https://yourdomain.atlassian.net then enter yourdomain.

  3. Enter the data you copied earlier from the Atlassian Cloud "SP Entity ID" into the Account Number field.

  4. Atlassian Cloud uses the Mail attribute, Username attribute, First name attribute, and Last 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
    <First Name> givenName FirstName
    <Last Name> sn LastName

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

    Duo Atlassian Cloud Application Settings

  5. 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.

  6. Scroll to the bottom of the page and click the Save button.

Verify SSO

You can log on to Atlassian Cloud by going to the URLs of any of your Atlassian Cloud services, typing in your e-mail address, and clicking Continue. This redirects you to the Duo Single Sign-On login page. Enter your primary directory logon information, approve Duo two-factor authentication, and get redirected back to the Atlassian Cloud site after authenticating.

Duo Single Sign-On Login and Authentication Prompt

Congratulations! Your Atlassian Cloud users now authenticate using Duo Single Sign-On.

Enable Remembered Devices

To minimize additional Duo two-factor prompts when switching between Atlassian Cloud 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.