auth		required	pam_nologin.so
auth		required	pam_env.so
auth		sufficient	pam_unix.so nullok 
auth		sufficient	pam_krb5.so try_first_pass
auth		required	pam_deny.so
account		required	pam_unix.so
password	required	pam_unix.so
session		required	pam_unix.so
session		optional	pam_openafs_session.so