pam_deny

Deny all authentication

$ auth required pam_deny.so

$ account required pam_deny.so

$ password required pam_deny.so

pam_deny.so

pam_deny always returns failure. Used to block authentication.
The module denies all requests unconditionally. Security failsafe module.

No parameters. Always returns failure.

No configuration options. Use carefully to avoid lockout.

pam_deny provides a universal deny module for PAM configurations.

pam(8), pam_permit(8)