[Spce-user] Remove local address from Peer INVITE Record-Route / Via Headers

Sat Feb 18 02:51:47 EST 2017

If thats the case ... then they are FULL-BROKEN, they should only inspect the top-most header, not the inner ones. 

You could 'hide' your private IP's using the audiocodecs workaround, but you will need another public IP, or move the 'internal services' to other ports (and of course protecting them throught firewall) 
But this workaround will not remove customer private IP's if they are present on the request. 

> De: "Nathaniel Pitcher" <nathaniel at inmtn.net>
> Para: spce-user at lists.sipwise.com
> Enviados: Sábado, 18 de Febrero 2017 2:58:40
> Asunto: [Spce-user] Remove local address from Peer INVITE Record-Route / Via
> Headers

> We are having a problem with some calls going to a peer.

> We make a call and receive early media and then after about 30s the call is
> terminated.

> In speaking with our provider and giving them some pcaps, they seem to think
> that their upstream provider does not like seeing “local” IPs in the
> Record-Route or Via SIP headers.

> Is there a way that we can only show the public IP when we send the invite to a
> peer?

> Below is the invite:

> 2017/02/18 01:48:59.218055 xxx.197.197.130:5060 -> xxx.115.69.144:5060
> INVITE sip:12223334444 at xxx.115.69.144:5060;transport=udp SIP/2.0
> Record-Route: <
> sip:xxx.197.197.130;r2=on;lr=on;ftag=1DBB886B-58A7A80B0003501E-C6CEC700;ngcplb=yes
> >
> Record-Route: <
> sip:10.111.111.111;r2=on;lr=on;ftag=1DBB886B-58A7A80B0003501E-C6CEC700;ngcplb=yes
> >
> Via: SIP/2.0/UDP
> xxx.197.197.130;branch=z9hG4bK1dde.7f15d8fccb769b263f65fef36ad1e9be.0
> Via: SIP/2.0/UDP
> 10.111.111.111:5080;received=10.111.111.111;branch=z9hG4bK6ldVKae7;rport=5080
> From: < sip:19518948809 at sip.server.net >;tag=1DBB886B-58A7A80B0003501E-C6CEC700
> To: < sip:12075552*17608021325 at xxx.115.69.144 >
> CSeq: 10 INVITE
> Call-ID: 8b3190a6-3707-4bee-9322-97b7a4e31430_b2b-1
> Max-Forwards: 69
> Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK, BYE, CANCEL, UPDATE,
> PRACK, MESSAGE, REGISTER
> Supported: 100rel, replaces, norefersub
> P-Asserted-Identity: < sip:15554443333 at sip.server.net >
> Content-Type: application/sdp
> Content-Length: 276
> Contact: <
> sip:ngcp-lb at xxx.197.197.130:5060;ngcpct=7369703a31302e3133382e302e3130353a35303830
> >

> v=0
> o=- 899528559 899528559 IN IP4 172.16.123.123
> s=Asterisk
> c=IN IP4 xxx.9.52.19
> t=0 0
> m=audio 11590 RTP/AVP 0 8 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=sendrecv
> a=ptime:20
> a=maxptime:150
> a=direction:both

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