Resolved unknown domains point to my ip

[andre_c]

Good evening, from the IP query, there are 2 domains that are not registered in the plesk backend and that I would like to inhibit as they are not authorized. Would there be a way?

 

[Peter Debik]

These iptable rules will create peace and quiet for the domain. Please replace “DOMAIN.TLD” with the actual domain name.

# iptables -I INPUT 1 -p tcp -m multiport --dports 80,443,7080,7081,8443,8447 -m string --algo bm --string "DOMAIN.TLD" -j REJECT --reject-with tcp-reset
# iptables -I FORWARD 1 -p tcp -m multiport --dports 80,443,7080,7081,8443,8447 -m string --algo bm --string "DOMAIN.TLD" -j REJECT --reject-with tcp-reset
# iptables -I OUTPUT 1 -p tcp -m multiport --dports 80,443,7080,7081,8443,8447 -m string --algo bm --string "DOMAIN.TLD" -j REJECT --reject-with tcp-reset

The "#" is not part of the command, but means to run the command as root.