Re: [rtcweb] STUN for keep-alive

Eric Rescorla <ekr@rtfm.com> Wed, 14 September 2011 17:30 UTC

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From: Eric Rescorla <ekr@rtfm.com>
Date: Wed, 14 Sep 2011 10:32:02 -0700
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To: Christer Holmberg <christer.holmberg@ericsson.com>
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Subject: Re: [rtcweb] STUN for keep-alive
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On Wed, Sep 14, 2011 at 10:20 AM, Christer Holmberg
<christer.holmberg@ericsson.com>; wrote:
>
> Hi,
>
>>One new concern in this context is maintaining the consent freshness.
>>The browser needs to be sure that the recipient of traffic is stil responding in a way that can't be forged. It's likely RTCP provides this (though we'd need to analyze to be sure) but perhaps better would be to mandate STUN checks
>>at enough frequency that you get some sort of level of freshness.... maybe every 2 minutes or something.
>
> Please note that the STUN keep-alives are implemented using STUN indication messages, so there are no replies (nor does the receiver perform an authentication check).


Oh... I had forgotten that.... that's not good.

-Ekr