CRS3xx isolate management port ( without VLAN )

Hello,

I use the switch with Router OS.

I have put all interfaces to a bridge, only without the management port.

It is possible this port to isolate? ( forwarding override acivate, but no forward to configure ) I don’t want use VLAN for the management port.

So, it is a valid configuration? Or it is not safe?

KR
Oliver