27.12.2015 3229
With the new release of version 1.6 you can not only block a single IP address you can block a whole range.
Before the version 1.6 you could only block a single IP address, since version 1.6 you can block a whole range like:
192.168.1.0:255.255.255.0
This will block all IP's from 192.168.1.1 to 192.168.1.254. That should help you block people with ease that like to harm your website.