Hacking

If you are being brute force attacked by someone trying to login to your website, more specifically your WordPress blog, you could certainly block them in the firewall by their ip adress, with iptables like this: iptables -A INPUT -s 13.22.33.12 -j DROP However, this gets quite cumbersome to do everytime your site is under attack, so the best solution would be to have an automated blocking system.  This is where fail2ban comes in. Using fail2ban to