Re: IP and MAC address management in Jabber

Thanks a lot! That's very clear now :)


On 02/06/2014 17:40, Peter Saint-Andre wrote:
> On 6/2/14, 12:44 AM, Rafael Mirto wrote:
>> Thanks a lot Peter for these info!!!
>>
>> One last question :
>> "No, the Jabber server is used only for signalling (call setup), not
>> voice or video. The signalling is sent via the server between the
>> clients and the server just acts as a dumb router for that data. "
>>
>> Dumb router for data, does this mean that IP and MAC addresses are
>> forwarded in the voice packets ?
>
> The clients need to communicate IP addresses (there is no need to 
> communicate MAC addresses for any of this) in order to establish a 
> media path. See for instance:
>
> http://xmpp.org/extensions/xep-0176.html
>
> This communication occurs over the "signaling path", i.e. XMPP. Even 
> with OTR, this information is not end-to-end encrypted (because OTR 
> only encrypts the <body/> element of the <message/> stanza, not the 
> fully payload of <iq/> stanzas). We are working on ways to make that 
> happen, but it's not the reality yet.
>
> The media path communicates information about codecs, video 
> resolution, and that kind of thing, not IP addresses etc. Using SRTP 
> or ZRTP, the media data can be end-to-end encrypted.
>
> Peter
>
>
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