Subject: [Sip] Is it ever correct to authenticate a 302?

From: "Sean O'Neil" <[email-masked]>
Date: Mon, 25 Mar 2002 13:48:41 -0800

Is it every appropriate to authenticate a 302 with a 401 or 407?  Is/should
a 302 be a request, a response or both?

Example.

Invite goes through a proxy to an endpoint which returns a 302 to the proxy
with a PSTN contact.  The service provider would like to bill the client
forwarding the 302 for the next call leg out through the pstn, but needs to
authenticate the sender of the 302 response to ensure that he has ability to
bill for next leg of call.  How can the proxy enforce that the initiator of
the 302 have an address of record in its registry database?

Thanks

Sean

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