Duo Protection for Signal Sciences 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 Signal Sciences 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 Signal Sciences.

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 Signal Sciences. 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 attribute from the table below that corresponds to the Duo attribute Mail 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 in the "Attributes" field.

   Duo Attribute	Active Directory	OpenLDAP
   Mail attribute	mail	mail

   If your organization uses other directory attributes than the one listed here then enter that attribute name instead. If you've already configured the attributes list for another cloud service provider, append this additional attribute to the list.

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 Signal Sciences when configuring SSO. Click the Download Certificate link to obtain the token signing certificate (the downloaded file is named "dag.crt").

   

Create the Signal Sciences Application in Duo

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

2. Locate the entry for Signal Sciences 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 Signal Sciences. See Protecting Applications for more information about protecting applications in Duo and additional application options.

3. Signal Sciences 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.

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

   

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 — 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.

6. Click the Download your configuration file link to obtain the Signal Sciences 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 Signal Sciences 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 Signal Sciences SAML application JSON file you downloaded from the Duo Admin Panel earlier. Click the Upload button after selecting the JSON configuration file.

3. The Signal Sciences SAML application is added.

   

Enable Signal Sciences SSO

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

1. Log on to the Signal Sciences dashboard as an administrative user.

2. Click on your company name located at the top right of the page, then click Settings from the drop-down.

3. On the "Settings" page next to "SAML Authentication" click Switch to SAML.

4. A pop-up will appear requiring you to confirm that once you've configured SSO for Signal Sciences your users will be sent an e-mail to link their account for SSO. They will also lose the ability to sign in with their passwords. Click I understand, configure SSO. The page will reload with new options.

   

5. Copy the SSO URL information from the Duo Access Gateway admin console Metadata display and paste it into the Signal Sciences SAML endpoint field.

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

6. The "Public 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.

7. Click Authenticate and the page will redirect you to the Duo Access Gateway login page, prompt for Duo two-factor authentication, and then redirect back to the Signal Sciences site after authenticating.

   

8. Once you've returned to the Signal Sciences site you'll be asked to confirm enabling SSO by typing in your current Signal Sciences password and clicking Enable SSO.

9. An email will automatically be sent to all Signal Sciences users in your account. When they click the link in their e-mail they will be asked to complete an authentication with the Duo Access Gateway. Their Signal Sciences account will now work with SSO.

   

Learn more about Signal Sciences SSO at Signal Sciences Documentation site.

Using SSO

If your organization enabled the Duo Access Gateway portal, log into the portal page using the link provided by your administrator. Click Signal Sciences from the dashboard to access the application.

You can also access Signal Sciences by navigating to the Signal Sciences dashboard page, typing in your e-mail address and then clicking Next. 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 Signal Sciences site after authenticating.

Congratulations! Your Signal Sciences 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 Signal Sciences. Learn more about configuring Signal Sciences SSO with AD FS at the Signal Sciences Documentation site.

After you have successfully configured and tested AD FS SSO login to Signal Sciences using your AD domain credentials, you can then install the Duo AD FS integration. AD FS protection is included with Duo Essentials, Duo Advantage, and Duo Premier 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 Signal Sciences.

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.