Duo Protection for PagerDuty with Duo Access Gateway

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.

Duo Access Gateway

Duo Access Gateway (DAG), our on-premises SSO product, layers Duo's strong authentication and flexible policy engine on top of PagerDuty logins using the Security Assertion Markup Language (SAML) 2.0 authentication standard. Duo Access Gateway acts as an identity provider (IdP), authenticating your users using existing on-premises or cloud-based directory credentials and prompting for two-factor authentication before permitting access to PagerDuty.

Duo Access Gateway is included in the 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 PagerDuty. Duo checks the user, device, and network against an application's policy before allowing access to the application.

Deploy or Update Duo Access Gateway

1. Install Duo Access Gateway on a server in your DMZ. Follow our instructions for deploying the server, configuring DAG settings, and adding your primary authentication source.

2. Add the attributes from the table below that correspond to the Duo attributes Mail attribute and Username attribute in the "Attributes" field when configuring your Active Directory or OpenLDAP authentication source in the DAG admin console, separated by a comma. For example, if Active Directory is your authentication source, enter mail,sAMAccountName in the "Attributes" field.

   Duo Attribute	Active Directory	OpenLDAP
   Mail attribute	mail	mail
   Username attribute	sAMAccountName	uid

   If your organization uses other directory attributes than the ones listed here then enter those attribute names instead. If you've already configured the attributes list for another cloud service provider, append the additional attributes not already present to the list, separated by a comma.

3. After completing the initial DAG configuration steps, click Applications on the left side of the Duo Access Gateway admin console.

4. Scroll down the Applications page to the Metadata section. This is the information you need to provide to PagerDuty when configuring SSO. Click the Download Certificate link to obtain the token signing certificate (the downloaded file is named "dag.crt").

   

Enable PagerDuty SSO

Add the Duo Access Gateway as a new single sign-on provider for PagerDuty.

1. Log on to PagerDuty as an administrative user and click on your User Profile in the upper right-hand side of the page. Click Account Settings from the drop-down. Click the Single Sign-on tab.

2. Under the "Login Authentication" section of the page select the SAML option. The page will expand with new options.

3. The "X.509 Certificate" is the DAG Metadata certificate supplied by Duo Access Gateway. Open the dag.crt 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 this field.

4. Copy the SSO URL information from the Duo Access Gateway admin console Metadata display and paste it into the PagerDuty Login URL field.

   Example: https://yourserver.example.com/dag/saml2/idp/SSOService.php

5. Copy the Logout URL information from the Duo Access Gateway admin console Metadata display and paste it into the PagerDuty Logout URL (optional) field.

   Example: https://yourserver.example.com/dag/saml2/idp/SingleLogoutService.php

6. You may configure other options such as requiring users to SSO and to automatically create users upon first login.

7. After you've entered all the required information click Save Changes.

   

Learn more about PagerDuty SSO at the PagerDuty Knowledge Base.

Create the PagerDuty Application in Duo

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

2. Locate the entry for PagerDuty with a protection type of "2FA with SSO self-hosted (Duo Access Gateway)" in the applications list. Click Protect to the far-right to start configuring PagerDuty. See Protecting Applications for more information about protecting applications in Duo and additional application options.

3. The Domain name is the domain used when logging into your company's PagerDuty. For example, if your PagerDuty login URL is https://yourdomain.pagerduty.com then enter yourdomain as the domain name in Duo.

4. PagerDuty uses the Mail attribute when authenticating. We've mapped Mail attribute to DAG supported authentication source attributes as follows:

   Duo Attribute	Active Directory	OpenLDAP	SAML IdP	Google	Azure
   Mail attribute	mail	mail	mail	email	mail

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

5. Click Save Configuration to generate a downloadable configuration file.

   

6. 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 — or come back and change the application's policies and settings after you finish SSO setup. If you do update any settings, click the Save Changes button when done.

7. Click the Download your configuration file link to obtain the PagerDuty application settings (as a JSON file).

   Important: This file contains information that uniquely identifies this application to Duo. Secure this file as you would any other sensitive or password information. Don't share it with unauthorized individuals or email it to anyone under any circumstances!

Add the PagerDuty Application to Duo Access Gateway

Before you do this, verify that you updated the "Attributes" list for your Duo Access Gateway authentication source as specified here.

1. Return to the Applications page of the DAG admin console session.

2. Click the Choose File button in the "Add Application" section of the page and locate the PagerDuty SAML application JSON file you downloaded from the Duo Admin Panel earlier. Click the Upload button after selecting the JSON configuration file.

3. The PagerDuty SAML application is added.

   

Verify SSO

You can log onto PagerDuty by going to your company PagerDuty website e.g. https://yourdomain.pagerduty.com and clicking "Sign in with your Identity Provider". This redirects to the Duo Access Gateway login page. Enter your primary directory logon information, approve Duo two-factor authentication, and get redirected back to the PagerDuty site after authenticating.

If using the PagerDuty mobile app, fill in your e-mail address and then tap "Search". Tap "Sign in with your Identity Provider", and then authenticate to Duo Access Gateway.

Congratulations! Your PagerDuty users now authenticate using Duo Access Gateway.

Microsoft AD FS

Microsoft's Active Directory Federation Services (AD FS) is a popular choice for SSO because it easily integrates with the AD identity store many organizations already have deployed. Duo's support for cloud applications and SSO drops in to an existing AD FS installation to provide secondary authentication after a user passes primary authentication (successful Active Directory logon).

If you don't already have AD federation running the first step is to install and configure Microsoft AD FS in your organization. Deployment Guides for AD FS versions 2.1, and 3.0/4.0 are available from Microsoft.

Once your AD FS services are up and running, the second step is to configure the SSO partnership between your AD FS service and the external cloud resource, in this case PagerDuty. Learn more about configuring PagerDuty SSO with AD FS at the PagerDuty Knowledge Base.

After you have successfully configured and tested AD FS SSO login to PagerDuty using your AD domain credentials, you can then install the Duo AD FS integration. AD FS protection is included with Duo's paid plans.

With the Duo integration for AD FS installed, users pass primary authentication to the AD FS service as usual. Once primary authentication succeeds, users are forwarded to the Duo service for secondary authentication. After approving logon using one of Duo's authentication methods, the user is fully logged in to PagerDuty.

Other Identity Partners

Using a third-party SSO provider for cloud application access? Duo partners with leading cloud SSO providers like Okta and OneLogin to secure access with our strong and flexible authentication platform.

You can also use Duo two-factor authentication with CAS and Shibboleth on-premises IdPs.

Troubleshooting

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