Use these steps to set up Facebook as your identity provider.
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Go to developers.facebook.com.
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Click Create App at the top-right. The Create a New App ID card displays.
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Enter the Display Name and Contact Email.
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Click Create App ID. The Create a New App ID window displays.
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Enter the CAPTCHA code to proceed.
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Click Submit.
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On the Facebook Login card, click Set Up. A Quickstart card displays offering platform choices.
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Click Web. The Web tab displays.
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Enter your Site URL.
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Click Save.
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Click Continue. Ignore any JavaScript page that suggests that you install it on your site.
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Click Settings > Basic.
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Copy the App ID and App Secret.

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On the Zero Trust dashboard, navigate to Settings > Authentication.
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Under Login methods, click Add new.
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Fill in the App ID and App Secret obtained from Facebook.
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(Optional) Enable Proof of Key Exchange (PKCE). PKCE will be performed on all login attempts.
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Click Save.
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On developers.facebook.com, click Facebook Login > Settings on the left-hand menu.
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Ensure that the Use Strict Mode for Redirect URIs slider is set to Yes.
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In the Valid OAuth redirect URIs field, enter your team domain, followed by this callback at the end of the path:
/cdn-cgi/access/callback. For example:https://<your-team-name>.cloudflareaccess.com/cdn-cgi/access/callback -
Click Save Changes.
To test that your connection is working, follow the steps on SSO Integration.
Example API Configuration
{ "config": { "client_id": "<your client id>", "client_secret": "<your client secret>" }, "type": "facebook", "name": "my example idp"
}