#auth		required	pam_env.so 
auth		sufficient	pam_ldap.so
auth		required	pam_unix.so try_first_pass likeauth nullok 

#auth		optional	pam_permit.so
 
account		required	pam_ldap.so
account		required	pam_unix.so try_first_pass

#account		optional	pam_permit.so
 
password	sufficient	pam_ldap.so
password	required	pam_cracklib.so difok=2 minlen=8 dcredit=2 ocredit=2 retry=3 
password	required	pam_unix.so try_first_pass use_authtok nullok sha512 shadow 

#password	optional	pam_permit.so
 
session		required	pam_mkhomedir.so umask=022 skel=/etc/skel
session		required	pam_limits.so 
session		required	pam_env.so 
session		required	pam_unix.so 
session		optional	pam_ldap.so

#session		optional	pam_permit.so