Re: [rtcweb] Summary of ICE discussion

Cullen Jennings <fluffy@cisco.com> Wed, 05 October 2011 19:39 UTC

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From: Cullen Jennings <fluffy@cisco.com>
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Date: Wed, 5 Oct 2011 13:42:13 -0600
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To: Bernard Aboba <bernard_aboba@hotmail.com>
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Subject: Re: [rtcweb] Summary of ICE discussion
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Thanks


On Oct 4, 2011, at 9:14 PM, Bernard Aboba wrote:

> 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