WHMCS Two-Factor Authentication Duo Security
Duo-Security vs Time Based Tokens vs Yubikey Authentication

Two-factor authentication adds an additional layer of security by introducing a second step to your login. It takes something you know (i.e.: your password), and adds a second factor, typically something you physically have (such as your phone). Since both are required to log in, in the event an attacker obtains your password two-factor authentication would stop them for accessing your account.


Duo-Security | Free
Time Based Tokens | $1.50 per month for unlimited users
Yubikey Authentication | $40 per user


Duo Security :

Duo Security WHMCS
Two factor Users
dashboard .



Application Auth Api Protect an Application


Integration Key
Secret Key
API hostname

Duo Application Whmcs

Navigate to Setup > Staff Management > Two-Factor Authentication

Activate Duo Security

Enable for Clients
Enable for Staff

Active Force
Two factor

Force Two Factor Authentication on Next Login

Force Settings
Force Clients to enable Two Factor Authentication on Next Login
Force Administrator Users to enable Two Factor Authentication on Next Login

automatic Manual
profile whmcs Two-Factor Authentication

user pass

backup two factor