Block SMB traffic

Hi to all, i just bought a RB750r2 board and i am trying without luck to find a way to block file sharing on my network.

i searched and coudn’t find a solution to work…so can you please help?

Before asking:
i have a network which is seperated in 2 subnets:
192.168.10.1
192.168.11.1

the whole network works with static ip
AND the mikrotik needs to be in bridge mode


Thanks!!!