NAME

       pam_shells - PAM module to check for valid login shell

SYNOPSIS

       pam_shells.so

DESCRIPTION

       pam_shells is a PAM module that only allows access to the system if the users shell is
       listed in /etc/shells.

       It also checks if /etc/shells is a plain file and not world writable.

OPTIONS

       This module does not recognise any options.

MODULE TYPES PROVIDED

       The auth and account module types are provided.

RETURN VALUES

       PAM_AUTH_ERR
           Access to the system was denied.

       PAM_SUCCESS
           The users login shell was listed as valid shell in /etc/shells.

       PAM_SERVICE_ERR
           The module was not able to get the name of the user.

EXAMPLES

           auth  required  pam_shells.so

SEE ALSO

       shells(5), pam.conf(5), pam.d(5), pam(7)

AUTHOR

       pam_shells was written by Erik Troan <ewt@redhat.com>.