Block IP Addresses With IPtables & APF

Have a user that keeps hammering your FTP or trying to login over and over and over again that you just want to ban and never see again? We’ll show a quick and dirty method to ban an IP address from the server.

We commonly receive questions like:
“I would like to ban that ip address to prevent the access to the server.
how can i ban that Ip address from the server?”

Simple !

Login to the server as root.

1. If you are running iptables, you can enter:
   iptables -A INPUT -s IP_ADDRESS -j DROP
   Ex: Block IP 68.72.72.25
   iptables -A INPUT -s 68.72.72.25 -j DROP

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