[Spce-user] Masking provider IP

[Andrew Yager]

On 26/02/2013, at 12:30 AM, Jon Bonilla (Manwe) <jbonilla at sipwise.com> wrote:

> El Tue, 26 Feb 2013 00:09:01 +1100
> Andrew Yager <andrew at rwts.com.au> escribió:
> 
>>> 
>>> It should work out of the box. The provider has a b2bua (sems) performing
>>> topology hiding. Each leg shouldn't see the other leg's IP address. 
>>> 
>>> Can you see your provider's IP while performing a ngrep capture in the
>>> subscriber network?
>> 
>> Yes I can - and I thought it should just be working, both in the from and the
>> P-Asserted-ID.
>> 
>> The providers address doesn't appear in the record-route however.
>> 
> 
> 
> Please keep the mailing list in CC

Apologies, I had intended to.

> 
> So, the IP address of the peer is shown in the TO and From headers? 
> 

It appears in three locations below in the invite message:

INVITE sip:61283554154 at 10.211.55.6:5060 SIP/2.0.
Max-Forwards: 10.
Record-Route: <sip:114.141.98.50;r2=on;lr=on;ftag=0AC5FA91-512B6906000214BC-F3D87700;ngcplb=yes>.
Record-Route: <sip:127.0.0.1;r2=on;lr=on;ftag=0AC5FA91-512B6906000214BC-F3D87700;ngcplb=yes>.
Via: SIP/2.0/UDP 114.141.98.50;branch=z9hG4bKe229.bab2eeb0417d38076670ec9e08c94a29.0.
Via: SIP/2.0/UDP 127.0.0.1:5080;branch=z9hG4bK.QyNRaB9;rport=5080.
From: <sip: 0405152568@ **** PROVIDER IP **** >;tag=0AC5FA91-512B6906000214BC-F3D87700.
To: <sip:61283554154 at syd03.voice.thecore.net.au>.
CSeq: 10 INVITE.
Call-ID: 3d92-4c2-125201313379-SYYP_IMG01-2-**** PROVIDER IP ****_b2b-1.
Allow: INVITE,ACK,CANCEL,BYE,REFER,OPTIONS,NOTIFY,SUBSCRIBE,PRACK,INFO.
P-Asserted-Identity: <sip:0405152568@ **** PROVIDER IP **** >.
Content-Type: application/sdp.
Content-Length: 400.
Contact: <sip:ngcp-lb at 114.141.98.50:5060;ngcpct='sip:127.0.0.1:5080'>.
.
v=0.
o=- 1859228012 1859228012 IN IP4 114.141.98.50.
s=ENSResip.
c=IN IP4 114.141.98.50.
t=0 0.
m=audio 30116 RTP/AVP 18 2 8 0 4 101.
a=rtpmap:18 G729/8000.
a=rtpmap:2 G726-32/8000.
a=rtpmap:8 PCMA/8000.
a=rtpmap:0 PCMU/8000.
a=rtpmap:4 G723/8000.
a=rtpmap:101 telephone-event/8000.
a=fmtp:18 annexb=no.
a=fmtp:4 bitrate=6.3.
a=fmtp:101 0-15.
a=silenceSupp:off - - - -.
a=sendrecv.
a=nortpproxy:yes.

Thanks,
Andrew