Elwell, John wrote:
Also, the B2BUA could handle the SUBSCRIBE by its own, this is,
> becoming a dialog presence server instead of forwarding the SUBSCRIBE
> to the UA.
> B2BUA must handle all this stuff since they are, in fact, the end
> point, not the UA's behind them.
[JRE] This reduces it to transitive trust, i.e., no better than P-Asserted-Identity.
Yes. Excepting cryptographic approaches: with any man-in-the-middle,
you're at the mercy of that man-in-the-middle, regardless of whether
their presence is an attack.
/a
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