pam_shells - PAM module to check for valid login shell
pam_shells is a PAM module that only allows access to the system if the user's shell is listed in /etc/shells.
It also checks if /etc/shells is a plain file and not world writable.
This module does not recognise any options.
The auth and account module types are provided.
auth required pam_shells.so
pam_shells was written by Erik Troan <email@example.com>.