auth       required pam_env.so
auth     sufficient /lib/security/pam_ssh.so
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  sufficient /lib/security/pam_ssh.so
session    required pam_unix.so