The Deny authentication service module for PAM, pam_deny provides functionality for all the PAM categories: authentication, account management, session management and password management. In terms of the module-type parameter, these are the "auth", "account", "session", and "password" features.
The Deny module will universally deny all requests. It is primarily of use during testing, and to "null-out" unwanted functionality.
The following options may be passed to the module: