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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.Htaccess IP Banning IP Block Bad Visitors

Increase your web site’s security by blocking bad visitors with .htaccess. If you have nuisance visitors, site scrapers, or spammers, you may want to add some lines of code to your .htaccess file that will block bad visitors by IP address or by blocks of IP addresses. You want to be careful though that you don’t ban blocks of IPs carelessly as you may end up banning potential customers or other valid site visitors. Also, nothing is completely foolproof as the user can always use another IP address, but I’ve found that this does reduce the number of troublesome incidents.

Secure Directories by IP Address and/or Domain

# allow all except those indicated here
order allow,deny
allow from all
deny from 190.115.67.200
deny from .*yourdomain\.com.*
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