Cloudflare Access allows your users to use Facebook as their IdP.
Use these steps to set up Facebook as your identity provider.
Click Create App at the top-right.
The Create a New App ID card displays
Enter the Display Name and Contact Email.
Click Create App ID.
The Create a New App ID window displays.
Enter the Captcha code to proceed.
On the Facebook Login card, click Set Up.
A Quickstart card displays offering platform choices.
The Web tab displays.
Enter your Site URL.
Click Settings > Basic on the left-hand menu.
In the Cloudflare Access app, copy the App ID and App Secret into the OAuth ID and OAuth Secret fields.
Click Facebook Login.
Set the Use Strict Mode for Redirect URIs slider to Yes.
Enter your authentication domain in the Valid OAuth redirect URIs field.
Click Save Changes.
Click Save and Test in the Cloudflare Access app.
On successful connection to your identity provider, a confirmation window displays.