<div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div><div class="h5">Hey Philipp,</div></div></blockquote><div><br></div><div>You can check out <a href="http://www.voip-info.org/wiki/view/Fail2Ban+(with+iptables)+And+Asterisk">http://www.voip-info.org/wiki/view/Fail2Ban+(with+iptables)+And+Asterisk</a> for setting up from brute force detection and blocking with asterisk. There are also a link at the bottom about rate limiting registrations via iptables. </div>
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