In the 'Group:' drop-down menu, click on the arrows to the right and select the 'gatech-2fa-Duo'. Next, the credential pop-up will appear.The software should then begin the authentication process. Once the An圜onnect pop-up box is displayed, click on the 'Connect' button.Launch the Cisco An圜onnect Application.If you are set up for Duo Two-Factor Authentication, here is how to use it with the An圜onnect Secure Mobility Client for OS X: It is not compatible with the Cisco IPSec client that is included with OS X. Note: Duo Two-Factor Authentication is only compatible with the Cisco An圜onnect Secure Mobility Client. Using 2 Factor Authentication with VPN - OSX