[Kamailio-Users] Kamalio Support for RFC 3323 " Privacy"

Klaus Darilion klaus.mailinglists at pernau.at
Fri Dec 12 00:55:55 CET 2008

Iñaki Baz Castillo wrote:
> El Jueves, 11 de Diciembre de 2008, ingdavidcespedes at cable.net.co escribió:
>> SORRYYYYYYY, you were right. What i'm trying to say is that if the UA
>> insert the p-p-i and privacy headers, the proxy should understand this and
>> do what I say above.
> The user sends the request with:
>   From: Anonymous <sip:anonymous at XXXXXx>
>   P-Preferred-Identity: <sip:alice at domain.com>
>   Privacy: id

If the user has only one identity, then the PPI header is not necessary 
as the user's identity will be know by the proxy, and the user for 
example bill be identified by its authentication username. But this 
again may cause problem with multidomain configurations and the auth 
user does not include domain.

Thus, maybe adding the PPI header always is a good idea.


> Then the proxy knows who is by checking PPI header and could ask for 
> credentiales. After it, the proxy would remove PPI before routing the 
> request.
> If the proxy sends the request to a trusted node, it could add PAI header:
>   P-Asserted-Identity: <sip:alice at domain.com>
>   Privacy: id
> And the next element would remove it if it routes to an untrusted 
> node/endpoint.

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