I just got setup with vonage.ca with the motorola ata unit.. I fired up
ethreal and checked out what's flying over the network...  The sniff below
would lead me to believe that it might be possible to have asterisk spoof
the User-Agent field and register itself?

Any thoughts/feedback?  Thanks.

>
> No.     Time        Source                Destination           Protocol Info
>     222 53.601179   172.21.5.102          216.115.25.187        SIP      Request: 
> REGISTER sip:bspgroup1.bsp.vonage.net:5061
>
> Frame 222 (622 bytes on wire, 622 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 216.115.25.187 
> (216.115.25.187)
> User Datagram Protocol, Src Port: 5061 (5061), Dst Port: 5061 (5061)
> Session Initiation Protocol
>     Request-Line: REGISTER sip:bspgroup1.bsp.vonage.net:5061 SIP/2.0
>         Method: REGISTER
>         Resent Packet: False
>     Message Header
>         From: <sip:[EMAIL 
> PROTECTED]:5061>;tag=ac150566-13c5-40eca012-eaee0a8-76e4;user=phone
>         To: <sip:[EMAIL PROTECTED]:5061>;user=phone
>         Call-ID: ac150566-13c5-40e8ddde-51e6-2327-0
>         CSeq: 1 REGISTER
>         Via: SIP/2.0/UDP 172.21.5.102:5061;branch=z9hG4bK-40eca012-eaee0a8-474d
>         User-Agent: <Motorola VT1000 mac: 000F9F8XXXXX sw:VT20_1.1.16e ln:0 
> cfg:10886711XXXXX/10022XXXXX>
>         Max-Forwards: 70
>         Contact: <sip:[EMAIL PROTECTED]:5061>;user=phone;transport=udp
>         Expires: 900
>         Content-Length:0
>
> No.     Time        Source                Destination           Protocol Info
>     224 53.711988   172.21.5.102          216.115.25.187        SIP      Request: 
> REGISTER sip:bspgroup1.bsp.vonage.net:5061
>
> Frame 224 (713 bytes on wire, 713 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 216.115.25.187 
> (216.115.25.187)
> User Datagram Protocol, Src Port: 5061 (5061), Dst Port: 5061 (5061)
> Session Initiation Protocol
>     Request-Line: REGISTER sip:bspgroup1.bsp.vonage.net:5061 SIP/2.0
>         Method: REGISTER
>         Resent Packet: False
>     Message Header
>         From: <sip:[EMAIL 
> PROTECTED]:5061>;tag=ac150566-13c5-40eca012-eaee0a8-76e4;user=phone
>         To: <sip:[EMAIL PROTECTED]:5061>;user=phone
>         Call-ID: ac150566-13c5-40e8ddde-51e6-2327-0
>         CSeq: 2 REGISTER
>         Via: SIP/2.0/UDP 172.21.5.102:5061;branch=z9hG4bK-40eca012-eaee10c-2713
>         Max-Forwards: 70
>         Contact: <sip:[EMAIL PROTECTED]:5061>;user=phone;transport=udp
>         Expires: 900
>         Authorization: Digest username="1905XXXXXXX", realm="216.115.25.187", 
> nonce="720170349", uri="sip:bspgroup1.bsp.vonage.net:5061", 
> response="6a2fe5ec7b98a098aaf82a7dfc1340aa", algorithm=MD5
>         Content-Length:0
>
> No.     Time        Source                Destination           Protocol Info
>     234 67.817617   172.21.5.102          216.115.25.187        SIP      Request: 
> REGISTER sip:bspgroup1.bsp.vonage.net:5061
>
> Frame 234 (622 bytes on wire, 622 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 216.115.25.187 
> (216.115.25.187)
> User Datagram Protocol, Src Port: 5061 (5061), Dst Port: 5061 (5061)
> Session Initiation Protocol
>     Request-Line: REGISTER sip:bspgroup1.bsp.vonage.net:5061 SIP/2.0
>         Method: REGISTER
>         Resent Packet: False
>     Message Header
>         From: <sip:[EMAIL 
> PROTECTED]:5061>;tag=ac150566-13c5-40eca020-eaf1830-3c4e;user=phone
>         To: <sip:[EMAIL PROTECTED]:5061>;user=phone
>         Call-ID: ac150566-13c5-40e8ddde-51e6-2327-0
>         CSeq: 1 REGISTER
>         Via: SIP/2.0/UDP 172.21.5.102:5061;branch=z9hG4bK-40eca020-eaf1830-216f
>         User-Agent: <Motorola VT1000 mac: 000F9F8XXXXX sw:VT20_1.1.16e ln:0 
> cfg:1088671XXXXXX/100225XXXX>
>         Max-Forwards: 70
>         Contact: <sip:[EMAIL PROTECTED]:5061>;user=phone;transport=udp
>         Expires: 900
>         Content-Length:0
>
> No.     Time        Source                Destination           Protocol Info
>     245 76.007450   172.21.5.102          216.115.25.187        SIP/SDP  Request: 
> INVITE sip:[EMAIL PROTECTED]:5061, with session description
>
> Frame 245 (972 bytes on wire, 972 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 216.115.25.187 
> (216.115.25.187)
> User Datagram Protocol, Src Port: 5061 (5061), Dst Port: 5061 (5061)
> Session Initiation Protocol
>     Request-Line: INVITE sip:[EMAIL PROTECTED]:5061 SIP/2.0
>         Method: INVITE
>         Resent Packet: False
>     Message Header
>         From: "905-XXX-XXXX"<sip:[EMAIL 
> PROTECTED]:5061>;tag=ac150566-13c5-40eca028-eaf3828-4f5a;user=phone
>         To: <sip:[EMAIL PROTECTED]:5061>;user=phone
>         Call-ID: [EMAIL PROTECTED]
>         CSeq: 1 INVITE
>         Via: SIP/2.0/UDP 172.21.5.102:5061;branch=z9hG4bK-40eca028-eaf3828-658b
>         User-Agent: <Motorola VT1000 mac: 000F9FXXXXXX sw:VT20_1.1.16e ln:0 
> cfg:10886711XXXXX/10022XXXXX>
>         Max-Forwards: 70
>         Contact: <sip:[EMAIL PROTECTED]:5061;transport=UDP;user=phone>
>         Content-Type: application/SDP
>         Content-Length:270
>     Message body
>
> No.     Time        Source                Destination           Protocol Info
>     247 76.116876   172.21.5.102          216.115.25.187        SIP      Request: 
> ACK sip:[EMAIL PROTECTED]:5061
>
> Frame 247 (564 bytes on wire, 564 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 216.115.25.187 
> (216.115.25.187)
> User Datagram Protocol, Src Port: 5061 (5061), Dst Port: 5061 (5061)
> Session Initiation Protocol
>     Request-Line: ACK sip:[EMAIL PROTECTED]:5061 SIP/2.0
>         Method: ACK
>         Resent Packet: False
>     Message Header
>         From: "905-XXX-XXXX"<sip:[EMAIL 
> PROTECTED]:5061>;tag=ac150566-13c5-40eca028-eaf3828-4f5a;user=phone
>         To: <sip:[EMAIL PROTECTED]:5061>;user=phone
>         Call-ID: [EMAIL PROTECTED]
>         CSeq: 1 ACK
>         Via: SIP/2.0/UDP 172.21.5.102:5061;branch=z9hG4bK-40eca028-eaf3828-658b
>         Max-Forwards: 70
>         Contact: <sip:[EMAIL PROTECTED]:5061;transport=UDP;user=phone>
>         Content-Length:0
>
> No.     Time        Source                Destination           Protocol Info
>     248 76.123752   172.21.5.102          216.115.25.187        SIP/SDP  Request: 
> INVITE sip:[EMAIL PROTECTED]:5061, with session description
>
> Frame 248 (1181 bytes on wire, 1181 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 216.115.25.187 
> (216.115.25.187)
> User Datagram Protocol, Src Port: 5061 (5061), Dst Port: 5061 (5061)
> Session Initiation Protocol
>     Request-Line: INVITE sip:[EMAIL PROTECTED]:5061 SIP/2.0
>         Method: INVITE
>         Resent Packet: False
>     Message Header
>         From: "905-XXX-XXXX"<sip:[EMAIL 
> PROTECTED]:5061>;tag=ac150566-13c5-40eca028-eaf3828-4f5a;user=phone
>         To: <sip:[EMAIL PROTECTED]:5061>;user=phone
>         Call-ID: [EMAIL PROTECTED]
>         CSeq: 2 INVITE
>         Via: SIP/2.0/UDP 172.21.5.102:5061;branch=z9hG4bK-40eca029-eaf389c-5a81
>         User-Agent: <Motorola VT1000 mac: 000F9FXXXXXX sw:VT20_1.1.16e ln:0 
> cfg:1088671XXXXXX/10022XXXXX>
>         Max-Forwards: 70
>         Contact: <sip:[EMAIL PROTECTED]:5061;transport=UDP;user=phone>
>         Proxy-Authorization: Digest username="1905XXXXXXX", realm="216.115.25.187", 
> nonce="1413734098", uri="sip:[EMAIL PROTECTED]:5061", 
> response="e40d9ebae8ebb6c901b56cad9dd8d7e0", algorithm=MD5
>         Content-Type: application/SDP
>         Content-Length:270
>     Message body
>
> No.     Time        Source                Destination           Protocol Info
>     251 79.262346   172.21.5.102          206.132.91.148        RTP      Payload 
> type=ITU-T G.711 PCMU, SSRC=5791, Seq=32514, Time=93961680, Mark
>
> Frame 251 (214 bytes on wire, 214 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 206.132.91.148 
> (206.132.91.148)
> User Datagram Protocol, Src Port: 10000 (10000), Dst Port: 12084 (12084)
> Real-Time Transport Protocol
>
> No.     Time        Source                Destination           Protocol Info
>     252 79.283170   172.21.5.102          206.132.91.148        RTP      Payload 
> type=ITU-T G.711 PCMU, SSRC=5791, Seq=32515, Time=93961840
>
> Frame 252 (214 bytes on wire, 214 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 206.132.91.148 
> (206.132.91.148)
> User Datagram Protocol, Src Port: 10000 (10000), Dst Port: 12084 (12084)
> Real-Time Transport Protocol
>
> No.     Time        Source                Destination           Protocol Info
>     253 79.303180   172.21.5.102          206.132.91.148        RTP      Payload 
> type=ITU-T G.711 PCMU, SSRC=5791, Seq=32516, Time=93962000
>
> Frame 253 (214 bytes on wire, 214 bytes captured)
> Ethernet II, Src: 00:0f:9f:86:42:d4, Dst: 00:06:25:db:aa:25
> Internet Protocol, Src Addr: 172.21.5.102 (172.21.5.102), Dst Addr: 206.132.91.148 
> (206.132.91.148)
> User Datagram Protocol, Src Port: 10000 (10000), Dst Port: 12084 (12084)
> Real-Time Transport Protocol
>
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