Hello there dear community
So after days of configuring my RB2011UiAS-2HnD-IN, everything is set up.
So: Modem (bridge mode) —> Router (PPPoE), WLAN, DynDNS
Today when I logged in into WinBox in Logs I spotted this:


I checked IPs, they are from China I suppose.
Is this attempt to bruteforce root password via SSH?
What should I do? This is going for at least 6-12 hours.
Can someone check my security settings?
My IP is dynamic but we are using DynDNS.