Hello mikrotik ,
I have an Idea for next version of mikrotik firewall rules .
Idea : Add check open port ability in mikrotik Extra table.
for example :
I add a filter rule on mikrotik firewall by 100 connection limit for tcp port .
mikrotik come and check this connection limit for all foreign IP.
Then on The foreign IP’s if SSH port (22) was open , Drop this IP .(IDEA)