auth		required	pam_env.so
auth		requisite	pam_faillock.so preauth
auth            [success=1 new_authtok_reqd=1 ignore=ignore default=bad]      pam_unix.so   try_first_pass
auth		[default=die]	pam_faillock.so authfail
account		required	pam_unix.so
account         required        pam_faillock.so
password        required        pam_unix.so try_first_pass  md5 shadow
session		required	pam_limits.so
session		required	pam_env.so
session		required	pam_unix.so