Diable MAC login to winbox

Hello,

I tried to disable MAC login via Winbox from specific interface but I could not get this done.
I would like to disable it on the hotspot interface.

Hotspot interface is bridge with three Wlan interfaces.
Can this be done? (sure it can but how :smiley: )

Can you control it via firewall rule? I created a Chain called Trial for Trial Hotspot users and would like to disable the MAC winbox for them…

Thanx for help!

Sorry found it under Tools MAC Server ..

Sorry for the stupid question!