WAN incoming consumption

RouterOS General
1

Dear,
Please help me figure out a way to solve this:
from different IP addresses i’m getting a huge load by the wan interface.
i’m blocking them by firewall and they stop, 5 minutes later it happens again from different IP.

WAN configured on public IP.

Please help.
Untitled.png

2

seems llike dns or ntp, block input chain from wan and open which port you want as winbox or ssh.

Sent from my HM 1S using Tapatalk