If a user fails to authenticate with a second factor, Duo Unix will prompt the user to authenticate again. This option sets the maximum number of prompts that Duo Unix will display before denying access. Must be 1, 2, or 3. Default is 3.
For example, when prompts = 1, the user will have to successfully authenticate on the first prompt, whereas if prompts = 2, if the user enters incorrect information at the initial prompt, he/she will be prompted to authenticate again.
When configured with autopush = true, we recommend setting prompts = 1.