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List: pdns-dev
Subject: [Pdns-dev] Fwd: Re: UDP2TCP conversion
From: Barbaros Kazan <barbaros.kazan () labristeknoloji ! com>
Date: 2012-11-08 7:23:19
Message-ID: 509B5DE7.8020304 () labristeknoloji ! com
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-------- Original Message --------
Subject: Re: [Pdns-dev] UDP2TCP conversion
Date: Thu, 8 Nov 2012 08:17:38 +0100
From: Peter van Dijk <peter.van.dijk@netherlabs.nl>
To: Barbaros Kazan <barbaros.kazan@labristeknoloji.com>
Hello Barbaros,
please post your reply to the mailing list.
On Nov 8, 2012, at 8:16 , Barbaros Kazan wrote:
> On 11/07/2012 11:24 PM, Peter van Dijk wrote:
>
> Hi Peter.
> With UDP, there can be a lot of spoofed ips. So if lots of queries come with \
> spoofed ips, so the performance will drop. We thought if go on with tcp, we will \
> drop the first packet that came with udp and go on the conversion with tcp by \
> always setting the tcp with, so we can handle spoofing.
> > Hello Barbaros,
> >
> > On Nov 7, 2012, at 14:36 , Barbaros Kazan wrote:
> >
> > > Hi,I want to use powerdns on my system and I need to do UDP to TCP conversion.
> > > So when a dns query comes from a client with UDP, I want to to set the TC bit \
> > > in my response even if the response is little than 512 and drop this packet.So \
> > > I always want to send my response with TC bit set and the conversion goes on \
> > > TCP. So what can I do?
> > > What are the main classes and functions that have this job so I can change them \
> > > to always set TC bit with response?
> > We're happy to point you to the right pieces of code, but first I have to ask: \
> > why?
> > Kind regards,
>
Kind regards,
--
Peter van Dijk
Netherlabs Computer Consulting BV - http://www.netherlabs.nl/
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<th align="RIGHT" nowrap="nowrap" valign="BASELINE">Subject: </th>
<td>Re: [Pdns-dev] UDP2TCP conversion</td>
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<td>Thu, 8 Nov 2012 08:17:38 +0100</td>
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<td>Peter van Dijk <a class="moz-txt-link-rfc2396E" \
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<td>Barbaros Kazan <a class="moz-txt-link-rfc2396E" \
href="mailto:barbaros.kazan@labristeknoloji.com"><barbaros.kazan@labristeknoloji.com></a></td>
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<pre>Hello Barbaros,
please post your reply to the mailing list.
On Nov 8, 2012, at 8:16 , Barbaros Kazan wrote:
> On 11/07/2012 11:24 PM, Peter van Dijk wrote:
>
> Hi Peter.
> With UDP, there can be a lot of spoofed ips. So if lots of queries come with \
spoofed ips, so the performance will drop. > We thought if go on with tcp, we will \
drop the first packet that came with udp and go on the conversion with tcp by always \
setting the tcp with, so we can handle spoofing. >> Hello Barbaros,
>>
>> On Nov 7, 2012, at 14:36 , Barbaros Kazan wrote:
>>
>>> Hi,I want to use powerdns on my system and I need to do UDP to TCP \
conversion. >>> So when a dns query comes from a client with UDP, I want to \
to set the TC bit in my response even if the response is little than 512 and drop \
this packet.So I always want to send my response with TC bit set and the conversion \
goes on TCP. >>> So what can I do?
>>> What are the main classes and functions that have this job so I can \
change them to always set TC bit with response? >> We're happy to point you to \
the right pieces of code, but first I have to ask: why? >>
>> Kind regards,
>
Kind regards,
--
Peter van Dijk
Netherlabs Computer Consulting BV - <a class="moz-txt-link-freetext" \
href="http://www.netherlabs.nl/">http://www.netherlabs.nl/</a>
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