[SR-Users] Kamailio to capture mirrored traffic

[David Villasmil]

Why not just receiving with kamailio and transparently proxying to the pbx
after capturing? I.e.: kamailio in the middle

On Sat, 26 Oct 2019 at 14:46, Igor Olhovskiy <igorolhovskiy at gmail.com>
wrote:

> Hi!
>
> I'm trying to get Kamailio working as a traffic capture on a same machine
> with other PBX software installed.
>
> Actually, traffic is mirrored with
>
> iptables -A PREROUTING -t mangle -i eth0 -p udp --dport 5060 -j TEE
> --gateway 127.0.0.2
> <https://link.getmailspring.com/link/AB5F9D36-533D-4A52-ADE3-FB76B813163C@getmailspring.com/0?redirect=127.0.0.2&recipient=c3ItdXNlcnNAbGlzdHMua2FtYWlsaW8ub3Jn>
> iptables -t nat -A PREROUTING -d 127.0.0.2 -p udp --dport 5060 -j DNAT
> --to 127.0.0.1:5062
> <https://link.getmailspring.com/link/AB5F9D36-533D-4A52-ADE3-FB76B813163C@getmailspring.com/1?redirect=127.0.0.1%3A5062&recipient=c3ItdXNlcnNAbGlzdHMua2FtYWlsaW8ub3Jn>
>
> Kamailio request route is super simple
> request_route {
>     xlog("L_ALERT", "[SIP-PACKET] Got packet [F=$fu R=$ru D=$du M=$rm
> IP=($si:$sp $Ri:$Rp) ID=$ci]\n");
>     drop;
> }
>
> I was trying to get Kamailio just listen on interface 127.0.0.1:5062, but
> no luck
>
> listen=udp:127.0.0.1:5062
>
> Next was to use sipcapture module with following parameters
>
> loadmodule "sipcapture.so"
> modparam("sipcapture", "db_url", "text:///tmp/")
> modparam("sipcapture", "raw_socket_listen", "127.0.0.1:5060-5062")
> modparam("sipcapture", "raw_interface", "lo")
> modparam("sipcapture", "promiscious_on", 1)
>
> Also no luck. Means Kamailio can't see packets, but I see em with
> wireshark on lo interface.
>
> What is best way to get it working? Or I'm missing something?
>
> Thanks!
> [image: Sent from Mailspring]
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>
-- 
Regards,

David Villasmil
email: david.villasmil.work at gmail.com
phone: +34669448337
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