Source files from:<br>
<a href="http://help.poralix.com/articles/how-to-block-ips-with-csf-directadmin-bfm">help.poralix.com/articles/how-to-block-ips-with-csf-directadmin-bfm</a>

<br><br>

Relating to option #3:<br>
<a href="http://help.directadmin.com/item.php?id=527">help.directadmin.com/item.php?id=527</a><br>
<a href="http://www.plugins-da.net">www.plugins-da.net</a>