Allow FB Two-Factor Authentication Only

Question

Our company allowed Facebook Messeger as messaging app but we are having hard time to allow page of Facebook two-factor authentication page without allowing the whole Facebook website.

Erick Jan · Answer

Hi Sandy, 
 Thank you for reaching out to Sophos Community. 
 Have you tried to use any how-to videos, documentation, Sophos Assistant, or KBA to try to check the issue? 
 Kindly try to create a Custom web Filter policy defining the Domain for Facebook two-factor authentication. 
 After that, apply this custom policy to allow users to access, while blocking the rest of Facebook. 
 
 Sophos Firewall: Create a custom web category