auth sufficient pam_permit.so
#%PAM-1.0
auth       required	pam_stack.so service=system-auth
auth       required	pam_nologin.so
account    required	pam_stack.so service=system-auth
password   required	pam_stack.so service=system-auth
session    required	pam_stack.so service=system-auth
session    optional     pam_console.so