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Barracuda Load Balancer ADC

How to Configure SMS Passcode Authentication Service

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Required Product Model and Version
This article applies to the Barracuda Load Balancer ADC 540 and above, version 5.1 and above.

On the Barracuda Load Balancer ADC, you can use SMS PASSCODE® with a RADIUS server to configure two-factor client authentication for your web applications. With SMS Passcode, users go through the following authentication process:

  1. The user enters a username and password. After the login credentials are verified, a passcode is sent to the user's mobile phone.
  2. The user is redirected to a challenge page to enter the passcode. 
  3. After submitting the passcode, the user can access  the application if the authorization policy allows it.

To set up SMS PASSCODE for a service, install it on a RADIUS server that you have integrated with the Barracuda Load Balancer ADC.


Step 1. Set Up SMS Passcode

Install and configure the SMS Passcode on the RADIUS server that you have integrated with the Barracuda Load Balancer ADC. For details, see your SMS PASSCODE Administrator's Guide.

Step 2. Verify that SMS Passcode Works Properly

As an end user, go through the followings steps to verify that SMS Passcode has been properly configured:

  1. In a web browser, go to the URL of the web application. 
  2. On the default authentication page, or the custom login page, enter your username and password and click Login. You should receive a passcode via SMS on your mobile phone.
  3. Enter the passcode and click Login. You should be redirected to the page that you initially tried to access.
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