- Open a new Terminal Window
- Type the following command replacing IPADDRESSTOBLOCK with the IP Address that you wish to block.
iptables -A INPUT -s IPADDRESSTOBLOCK -j DROP
Explanation of above command:
-A = Append one or more rules to the end of the selected chain
-s = Source, in this case the IP address to block
-j = This indicates what to do if the rule matches
- Save the Rule to the IPTables
service iptables save
Image Credits: Photo by Isis França on Unsplash.