Network Access Layer (NAL) option

Hi all,

To secure our RDP envirnment and avoid that the sessions were initiated on the RDP client, I've selected Allow connections only from computer running RDP with Network Level Authentication on the server Remote Desktop Session Host pannel .

Nothing has changed after I apply the modification, I'm always authenticated by the RDP client and not on the server logon logon page.

What should I do to fully enable the NAL? Should I setup the client side?

Thanks in advance.