2 auth required /lib/security/pam_pwdb.so md5 shadow
3 account required /lib/security/pam_pwdb.so
4 password required /lib/security/pam_cracklib.so difok=2 minlen=8 dcredit=2 ocredit=2 retry=3
5 password required /lib/security/pam_pwdb.so md5 shadow use_authtok
6 password required /lib/security/pam_make.so /var/db