Wow, that's slick!
On 08/14/2012 10:58 PM, Gergely Nagy wrote:
> Endre Szabo <syslog-ng@end.re> writes:
>
>> Here's a proof of concept of DNS based port knocking. Firewall opens
>> up port of SSHd for 10 seconds after nameserver answering to a
>> predefined DNS query. It uses pattern db and netfilter only.
>>
>> http://vimeo.com/endreszabo/dns-portknocking
> This is seriously wicked.
Agreed. Would you care to write a bit more about it and/or share your
patterndb/scripts?
thanks,
Peter
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