4 Jan
2013
4 Jan
'13
12:57 p.m.
Hello Klauss,
I use record_route_preset for this kind of scenarios:
http://kamailio.org/docs/modules/3.3.x/modules_k/rr.html#id2550086
That was the main reason that I enhanced record_route_preset with the
second parameter (see the Note on string2).
I haven't tried your idea with two sockets. Let us know if it's working.
If you need to use the same port on the internal and external
interface, you could add a new IP to the host and listen on two
sockets on the same port and force the socket when sending a request
out.
listen=udp:10.10.0.2
listen=udp:10.10.0.3 advertise pu.bl.ic.ip
Regards,
Ovidiu Sas
--
VoIP Embedded, Inc.
http://www.voipembedded.com
On Thu, Jan 3, 2013 at 5:11 AM, Klaus Darilion
<klaus.mailinglists(a)pernau.at> wrote:
Hi!
Up to now I could avoid Kamailio setups with Kamailio behind NAt. But this
time I have to deal with it. That's why I want to ask what others did as
best practice.
The scenario is:
Asterisk 1----\ Kamailio+RTPPROXY
\ |10.10.0.2
Asterisk n------\ |
--------|------------- FW --SIP-trunk--- ITSP
Freeswitch 1----/ 10.10.0.1 public-IP
/
Freeswitch n--/
10.10.0.x
Kamailio and rtpproxy have a private IP. Internal communication uses private
IPs, external communication uses a public IP which is NATed 1:1 to
Kamailio's IP address. No registrations, just forwarding of messages.
Using the global "advertised_address" setting with the public IP does not
work, as there is also internal communication. Using
set_advertised_address() is also cumbersome.
So it seems, the easiest solution would be to use 2 sockets on Kamailio,
e.g. port 5050 and port 5060. Then I could use the listen with dedicated
advertised addresses:
listen=udp:10.10.0.2:5050
listen=udp:10.10.0.2:5060 advertise pu.bl.ic.ip:5060
If I understand it correctly, this should solve all issues with
Record-Routing and Via-headers.
For RTP-Proxy it seems necessary to detect the direction of each message and
set the IP address in rtpproxy_manage("","ip.add.re.ss") manually.
Thus, it seems straight forward - or do I miss something? Any comments and
practical experience?
Thanks
Klaus