#%PAM-1.0 auth required pam_env.so auth [success=done ignore=ignore auth_err=die default=bad] pam_skey.so auth sufficient pam_unix.so likeauth nullok try_first_pass auth required pam_deny.so account required pam_unix.so password required pam_cracklib.so difok=2 minlen=8 dcredit=2 ocredit=2 retry=3 password sufficient pam_unix.so nullok md5 shadow use_authtok password required pam_deny.so session required pam_limits.so session required pam_unix.so