#%PAM-1.0 auth required pam_env.so auth sufficient pam_unix.so likeauth nullok auth required pam_deny.so account required pam_unix.so password required pam_cracklib.so 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