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Duo Protection for Workplace by Facebook (Formerly Facebook at Work)

Duo offers a variety of methods for adding two-factor authentication and flexible security policies to Workplace by Facebook SSO logins, complete with inline self-service enrollment and Duo Prompt.

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.

Duo Access Gateway

Duo Access Gateway (DAG), our on-premises SSO product, layers Duo's strong authentication and flexible policy engine on top of Workplace by Facebook logins using the Security Assertion Markup Language (SAML) 2.0 authentication standard. Duo Access Gateway authenticates your users using existing on-premises or cloud-based directory credentials and prompts for two-factor authentication before permitting access to Workplace by Facebook.

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

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

    DAG Metadata Information

Getting started with Workplace by Facebook

  1. Log on to your Workplace by Facebook console (https://yourcompany.facebook.com) as an administrator and navigate to Community Center in the left-hand navigation bar.

  2. Once on the "Community Center" page click Settings. Scroll down to SSO Settings.

  3. Under "SAML configuration" locate your Audience URL. Make note of the 16 character Company number located at the end of the Audience URL.

    Example: https://www.facebook.com/company/1234567891011121

Create the Workplace by Facebook Application in Duo

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

  2. Click Protect an Application, locate SAML - Workplace by Facebook in the applications list, and click Protect this Application. See Getting Started for help.

  3. Enter the domain used when logging into your company's Workplace by Facebook portal as the Domain. For example, if your Workplace by Facebook login URL is https://yourcompany.facebook.com enter yourcompany.

  4. Enter the Company number found at the end of your "Audience URL" into the Company Number field.

  5. Workplace by Facebook 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.

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

    Duo Workplace by Facebook Application Settings

  7. 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.

  8. Click the Download your configuration file link to obtain the Workplace by Facebook 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 Workplace by Facebook Application to Duo Access Gateway

  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 Workplace by Facebook SAML application JSON file you downloaded from the Duo Admin Panel earlier. Click the Upload button after selecting the JSON configuration file.

  3. The Workplace by Facebook SAML application is added.

    Workplace by Facebook Application Added

Enable Workplace by Facebook SSO

Add the Duo Access Gateway as a new single sign-on provider for Workplace by Facebook.

  1. Return the "Settings" page for Workplace by Facebook and scroll down to SSO Settings.

  2. Next to SAML Authentication click the drop down and select SSO only next to "Allow users to login via".

  3. You can select how long SSO sessions last for users in the web browser. Select an option from the drop down. Do not click Require SAML authentication for all users now.

  4. Copy the SSO URL information from the Duo Access Gateway admin console Metadata display and paste it into the Workplace by Facebook SAML URL field.

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

  5. Copy the Entity ID information from the Duo Access Gateway admin console Metadata display and paste it into the Workplace by Facebook SAML Issuer URI field.

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

  6. The "SAML certificate" is the text of 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 Test SSO. A new window will appear. Enter your primary directory logon information, approve Duo two-factor authentication. If successful the screen will say the SSO login completed successfully. Close the window and return to the "SSO Settings" page.

  8. Scroll down to the bottom of the screen and click Save. The page will reload.

  9. You can optionally force all users to reauthenticate by going to SAML Authentication and clicking Require SAML authentication for all users now. A pop-up will ask "Are you sure you want to force SAML reauth? This will require all web users to reauthenticate via your SSO provider." Click Confirm. A confirmation message will appear, click OK.

    Workplace by Facebook Single Sign-On Setting Edit

Learn more about Workplace by Facebook SSO at Facebook for Developers.

Using SSO

You can log on to Workplace by Facebook using your organization’s domain login page e.g. https://yourcompany.facebook.com and click Log In. 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 Workplace by Facebook site after authenticating.

DAG Login and Authentication Prompt

Congratulations! Your Workplace by Facebook 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. Microsoft's Deployment Guides for AD FS versions 2.0, 2.1, and 3.0 are available on the TechNet site.

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 Workplace by Facebook. Learn more about configuring Workplace by Facebook SSO with AD FS at the Facebook for Developers site.

After you have successfully configured and tested AD FS SSO login to Workplace by Facebook 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 Workplace by Facebook.

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.

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