[asterisk-users] Asterisk not receiving call from VPN address

[David Cunningham]

Hi Larry,

No, they are on separate machines.



On 21 January 2014 17:54, Larry Moore <lmoore at omninet.net.au> wrote:

> Is Kamalio running on the same system as Asterisk?
>
>
> On 21/01/2014 2:41 PM, David Cunningham wrote:
>
>> Hi Larry,
>>
>> Thanks for the reply. We have all of those settings left out of our
>> sip.conf, so this should allow everything, right?
>>
>>
>>
>> On 21 January 2014 17:38, Larry Moore <lmoore at omninet.net.au
>> <mailto:lmoore at omninet.net.au>> wrote:
>>
>>     Have you checked your localnet=, deny=, permit=, contactdeny= &
>>     contactpermit= settings?
>>
>>     My 2c worth.
>>
>>
>>     On 20/01/2014 10:51 AM, David Cunningham wrote:
>>
>>         Hi,
>>
>>         We have a Kamailio and Asterisk cluster, both machines being on
>>         a real
>>         103.x IP address and also on a 172.x OpenVPN address.
>>
>>         The problem is that when Kamailo receives a call from the VPN and
>>         forwards it to the Asterisk server on it's 103.x address,
>>         Asterisk never
>>         sees the call.
>>
>>         If Kamailio receives a call from the VPN and forwards the call
>>         to the
>>         Asterisk server on it's 172.x address then it works. However, if
>> the
>>         call isn't from the VPN then forwarding it to the 172.x address
>>         doesn't
>>         work. So basically the problem is going between the real network
>>         and the
>>         VPN.
>>
>>         The question is, how can we make this work when calls are
>>         received on
>>         either network on the Kamailio server and are forwarded to
>> Asterisk?
>>
>>         Using ngrep on the Asterisk server we see that it does receive the
>>         INVITE, but Asterisk's logging shows no sign it at all. We guess
>>         it's a
>>         Linux networking issue rather than Asterisk's fault, but don't
>> know
>>         where to fix it. We do have net.ipv4.ip_forward = 1 on both the
>>         Kamailio
>>         and Asterisk servers.
>>
>>         Thanks in advance for any help.
>>
>>         The ngrep on the Asterisk server:
>>
>>         U 2014/01/17 13:15:15.599557 172
>>         <tel:15.599557%20172>.x.x.x:5060 -> 103.y.y.y:5060
>>         INVITE sip:9067268 at 103.y.y.y:5060;__transport=udp SIP/2.0.
>>
>>         Record-Route: <sip:172.x.x.x;lr=on>.
>>         Via: SIP/2.0/UDP 172.x.x.x;branch=z9hG4bK50c7.__f49ceb73.0.
>>         Via: SIP/2.0/UDP
>>         192.z.z.z:5062;rport=5062;__branch=z9hG4bK806710997.
>>         From: "9067271" <sip:9067271 at 172.x.x.x>;tag=__198791249.
>>
>>         To: <sip:9067268 at 172.x.x.x>.
>>         Call-ID: 1905625787 at 192.z.z.z.
>>         ...
>>
>>         172.x.x.x is the Kamailio server's VPN address
>>         103.y.y.y is the Asterisk server's real address
>>         192.z.z.z is the calling phone's LAN address
>>
>>         --
>>         David Cunningham, Voisonics
>>         http://voisonics.com/
>>         USA: +1 213 221 1092 <tel:%2B1%20213%20221%201092>
>>         UK: +44 (0) 20 3298 1642 <tel:%2B44%20%280%29%2020%203298%201642>
>>
>>         Australia: +61 (0) 2 8063 9019
>>         <tel:%2B61%20%280%29%202%208063%209019>
>>
>>
>>
>>     --
>>     ____________________________________________________________
>> _____________
>>
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>>
>>
>>
>> --
>> David Cunningham, Voisonics
>> http://voisonics.com/
>> USA: +1 213 221 1092
>> UK: +44 (0) 20 3298 1642
>> Australia: +61 (0) 2 8063 9019
>>
>>
>>
> --
> _____________________________________________________________________
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-- 
David Cunningham, Voisonics
http://voisonics.com/
USA: +1 213 221 1092
UK: +44 (0) 20 3298 1642
Australia: +61 (0) 2 8063 9019
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