auth		requisite	pam_securetty.so 
auth		required	pam_nologin.so 
auth		required	pam_env.so 
auth		optional	pam_group.so 
auth		sufficient	pam_snui.so 
auth		required	pam_unix.so use_first_pass nullok 

account		required	pam_unix.so use_first_pass

session    required   pam_unix.so
session    optional   pam_lastlog.so
session    optional   pam_motd.so
session    optional   pam_mail.so standard noenv
