Re: [rtcweb] Summary of ICE discussion

Bernard Aboba <bernard_aboba@hotmail.com> Wed, 05 October 2011 03:11 UTC

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Date: Tue, 4 Oct 2011 20:14:44 -0700
To: Matthew Kaufman <matthew.kaufman@skype.net>
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Cc: "rtcweb@ietf.org" <rtcweb@ietf.org>
Subject: Re: [rtcweb] Summary of ICE discussion
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Right, that's the attack I had in mind, but with high bandwidth video.



On Oct 4, 2011, at 7:49 PM, "Matthew Kaufman" <matthew.kaufman@skype.net>; wrote:

> On 10/4/2011 3:40 PM, Cullen Jennings wrote:
>> Could you say more... I'm not following your logic.
>> 
>> 
>> On Oct 4, 2011, at 10:47 AM, Bernard Aboba wrote:
>> 
>>> In particular, I'm concerned about vulnerabilities created by multiplexing
>>> audio and video on the same port.  When that is done, the ICE procedure loses
>>> some of its DoS prevention properties.
>>> 
> 
> I think what he's concerned about is that a device might consent (using ICE) to receive audio and unexpectedly receive multiplexed video on the same RTP port.
> 
> Not sure this really matters, as there's not much difference between low-frame-rate low-res video and 16-bit linear stereo PCM at 48 kHz (which might indeed be an audio codec you can choose).
> 
> Matthew Kaufman