Limit the possibility of a hacker attack by refusing incoming connection from the following IP ranges:
https://www.roberthedrock.org/wp/block-incoming-connections-from-the-following-ip-ranges/
Drastically limit hackers’ attacks by entering in the firewall rules to deny incoming and outgoing connections from IP in the following ranges:
https://www.roberthedrock.org/wp/block-all-connections-with-an-ip-from-the-following-ranges/
Live Cyber Attack Threat Map: