Secure Sharepoint sites by Azure Multi-Factor Authentication
From your Sharepoint and MFA installed server, Step 1: Check the URL of Sharepoint site to secure with Azure Multi-Factor Authentication Step 2: Add Multi-Factor Authentication for HTTP websites with following base URL of Sharepoint site Step 3: Check users added in "Multi-Factor Authentication server" From an external system, Step 1: Browse URL of Sharepoint Site Enter a user credential to login - must be a user in MFA Step 2: Enter a user credential to login - must be a user in MFA === Authentication phone rings === Logged in