How To Block an IP Address

Login to your Linux server via SSH


To block a specific IP address you would use the following command. Then to save your changes to the iptables you’ll need to save the new rules in your config file, otherwise the rules will be lost if your server restarts. Replace xx.xx.xx.xx with the IP address you want to block.

iptables -A INPUT -s xx.xx.xx.xx -j DROP
service iptables save
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