TCP inject attacks?

I’m not super duper experienced with firewalling bear with me.

I put a rule in my IPv4 firewall to log all new connection attempts (well, specifically !related and !established). Just to see what would happen.

I’m seeing a lot of new packets hitting my external interface with the source port 443 and 80 and some random destination port.

I’m trying to think of a reason why this would be happening other than a TCP inject attack?

Is that what this is?

Thanks.

You might want to add additional rule
/ip firewall filter add chain=input connection-state=invalid action=drop

Sent from my SM-N920T using Tapatalk