See Inline.

Thanks,
Neel.

> -----Original Message-----
> From: [email protected] [mailto:sip-
> [email protected]] On Behalf Of Olle E.
> Johansson
> Sent: Friday, December 16, 2011 6:35 AM
> To: [email protected] sip-
> [email protected]
> Subject: [Sip-implementors] Security issue in SIPconnect 1.1?
> 
> "
> 15.4.1.3
> Unknown SIP-PBX Identity
> The SP-SSE MUST issue a 404 Not Found response to a REGISTER request,
> if the Registration AOR of the SIP-PBX is not found in its database. An
> SIP-PBX receiving such a response to a REGISTER request MUST consider
> the Registration attempt to have failed, and notify the SIP-PBX
> administrator if possible through some means. The SIP-PBX SHOULD follow
> the backoff procedures defined previously in Section 15.4.1.1.
> "
> 
> 
[Neel] 
Ideally, if the SP_SSE supports authentication it should send 401 Unauthorized 
first to REGISTER.  Otherwise, it should send 404 Not Found.

> This means that it will be easy to find accounts in a SIP connect
> compliant service. If an account exists, I'll get an authentication
> response. Otherwise I will get a 404. This is something we fixed in
> Asterisk a long time ago in order to not make it easy to find existing
> accounts.
> 
> /O
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