From: jm (jm@hcn.com.au)
Date: Thu Jun 15 2006 - 01:22:23 EDT
This mentions an internal server that allows recursion. This is quite
often not the case. And even if it does, its the NS that does the
recursion, not the local resolver.
gimeshell@web.de wrote:
>On Tue, 13 Jun 2006 10:47:52 +0100
>Hubert Seiwert <hubert@westpoint.ltd.uk> wrote:
>
>
>
>>Another method of tunneling would be through DNS. You say that dns
>>traffic is blocked
>>on the server, but as long as there is a DNS server on the internal
>>network that will do
>>recursive resolving for you it's possible. You can use Dan Kaminsky's
>>OzymanDNS scripts
>>
>>
>
>Now i know surely 'udp src port 53' and 'udp dst port 53' are blocked.
>
>But now my question:
>
>How should it be possible for any internal DNS server to do recursive
>resolving and get outside from internal network if dns traffic is
>blocked and the only official/known dns resolving is done by proxy?
>
>I didn't take a deeper look at these scripts yet, but i will do.
>Perhaps i get all answers then but perhaps you can say, it isn't
>possible to use these scripts under these given circumstances, in the
>first place.
>
>regards,
>gimshell
>
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