# server TLSv1.0 PSK-NULL
-s
-v 1
-l PSK-NULL-SHA
# client TLSv1.0 PSK-NULL
# server TLSv1.1 PSK-NULL
-v 2
# client TLSv1.1 PSK-NULL
# server TLSv1.2 PSK-NULL
-v 3
# client TLSv1.2 PSK-NULL
# server TLSv1.2 PSK-NULL-SHA256
-l PSK-NULL-SHA256
# client TLSv1.2 PSK-NULL-SHA256