External logon page and handling an authentication challenge.

We created an external login page that works fine if use a username/password combination. On our VPN, users are required to enter a pin that has been sent to them via SMS. Using the built in login page it works fine, you enter your login/ad password then it prompts you to enter the pin.

 

When I use the external page, it doesn’t work and I get:

 

The session reference number: 7b5d1caf Access was denied by the access policy. This may be due to a failure to meet access policy requirements. If you are an administrator, please go to Access Policy >> Reports : All Sessions page and look up the session reference number displayed above.

 

Any way to tell it to display that prompt, so we can enter the pin? We use RADIUS authentication.

 

Thank you,

 

Misty