Wow, that&#39;s slick!<div>______________________________________________________________ <br><br>Clayton Dukes<br>______________________________________________________________<br>
<br><br><div class="gmail_quote">On Wed, Aug 15, 2012 at 12:41 PM, Peter Gyongyosi <span dir="ltr">&lt;<a href="mailto:gyp@balabit.hu" target="_blank">gyp@balabit.hu</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On 08/14/2012 10:58 PM, Gergely Nagy wrote:<br>
&gt; Endre Szabo &lt;<a href="mailto:syslog-ng@end.re">syslog-ng@end.re</a>&gt; writes:<br>
&gt;<br>
&gt;&gt; Here&#39;s a proof of concept of DNS based port knocking. Firewall opens<br>
&gt;&gt; up port of SSHd for 10 seconds after nameserver answering to a<br>
&gt;&gt; predefined DNS query. It uses pattern db and netfilter only.<br>
&gt;&gt;<br>
&gt;&gt; <a href="http://vimeo.com/endreszabo/dns-portknocking" target="_blank">http://vimeo.com/endreszabo/dns-portknocking</a><br>
&gt; This is seriously wicked.<br>
<br>
<br>
Agreed. Would you care to write a bit more about it and/or share your<br>
patterndb/scripts?<br>
<br>
thanks,<br>
Peter<br>
<br>
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</blockquote></div><br></div>