Guys, This discussion is going interesting. One group of people responded saying "Yes possible", and the other said "It's not". The end result is that I am very confused now.
I am trying to figure out a way in which I can challenge the SIP endpoint before delivering a call to it. The endpoint has already registered and passed authentication. But, when delivering an incoming call, if I want additionally to make sure that the call is not delivered to a spoofer, is there a way to authenticate the user? I am talking about something similar that happens in the cellular world. Shikhar -----Original Message----- From: Asheesh Joshi [mailto:[EMAIL PROTECTED] Sent: Thursday, October 13, 2005 1:57 AM To: 'Shikhar Sarkar'; [email protected] Subject: RE: [Sip-implementors] Authenticating an incoming SIP call Yes... Authentication challenge can happen for any request except CANCEL and ACK Authentication mechanism is the Digest Authentication. -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Shikhar Sarkar Sent: Thursday, October 13, 2005 4:25 AM To: [email protected] Subject: [Sip-implementors] Authenticating an incoming SIP call Guys, Is there a way to authenticate a SIP user for incoming call scenario such as: IAM Invite SS7----------->Softswitch------------->WiFi SIP device The WiFi SIP device of course has already registered with Softswitch. But is that enough to assume that there is no clone/eavesdropper? I am wondering why I always see 401/407 challenges always opposite to the direction of Invite. Is there a way to include Authentication challenge in the Invite itself? Please throw some light. Shikhar _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors _______________________________________________ Sip-implementors mailing list [email protected] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
