Need help with a RX Packet DDoS

Hello.

I have some problems with internet connection, some kid ddossing me with RX Packets - 100 M/bs (6000-8000 Rx packets) DDoS (see screenshot bellow)

So maybe any idea, about security with mikrotik RouterOS? I have CPU: Quad Core (8GB of ram) + License from Mikrotik.

Thanks.