15 Jan
2016
15 Jan
'16
4:32 a.m.
Not really up to date with all Asterisk features -- do you know if you
can append a custom header to a SIP response that is going to be
generated by Asterisk? Eventually the reply for an OPTIONS request.
Cheers,
Daniel
On 14/01/16 17:19, Nelson Migliaro wrote:
Yes, I manage all devices, even the internet router
but it does not
allow static pat.
2016-01-14 16:07 GMT+01:00 Daniel-Constantin Mierla <miconda(a)gmail.com
<mailto:miconda@gmail.com>>:
Do you control the Asterisk? If yes, depending on Asterisk
capabilities of building replies, you may be able to do some
automation to detect the external port.
Cheers,
Daniel
On Thu, Jan 14, 2016 at 3:47 PM, Nelson Migliaro
<eng.migliaro(a)gmail.com <mailto:eng.migliaro@gmail.com>> wrote:
There is not a public Kamailio, only one Kamailio behind NAT,
Right now the configuration is:
Asterisk <-> Kamailio (Private IP + advertise public IP + RTP
Proxy ) <-> Internet router (public IP + symmetric na) <->
Internet
Regards,
2016-01-14 15:43 GMT+01:00 Daniel-Constantin Mierla
<miconda(a)gmail.com <mailto:miconda@gmail.com>>:
Is the kamailio behind nat communicating with another
kamailio on a public IP?
Cheers,
DAniel
On Thu, Jan 14, 2016 at 1:33 PM, Nelson Migliaro
<eng.migliaro(a)gmail.com <mailto:eng.migliaro@gmail.com>>
wrote:
Thank you Daniel for your answer,
As you mention, there is a symmetric nat and router
does not allow a static NAT.
By sniffing traffic I can see the port is using new
but in case it change, how can automate the process of
advertising the correct port?
Cheers!
---------- Forwarded message ----------
From: *Daniel-Constantin Mierla* <miconda(a)gmail.com
<mailto:miconda@gmail.com>>
Date: 2016-01-13 23:28 GMT+01:00
Subject: Re: [SR-Users] Kamailio and NAT
To: "Kamailio (SER) - Users Mailing List"
<sr-users(a)lists.sip-router.org
<mailto:sr-users@lists.sip-router.org>>
Hello,
it looks like you have a symmetric nat router, so the
allocated port is randomly selected.
If you don't control the nat router to set a static
forwarding rule or it doesn't provide the option to
set static forwarding, then you are pretty much left
with sniffing the traffic to discover the external
port and advertise it.
Cheers,
Daniel
On 13/01/16 20:31, Nelson Migliaro wrote:
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
http://miconda.eu
Hello,
I finally were able to run my Kamailio behind NAT but
in order to accomplish that I included:
listen=udp:SOURCE-IP:5060 advertise PUBLIC-IP:52548
52548 is the port my internet router change when
doing NAT (5060->52548). I found this port sniffing
traffic
Conclusions at this point are:
---------------------------------------------1--------------------------------------------------------------------------------------------------
If I use this line:
listen=udp:SOURCE-IP:5060 advertise PUBLIC-IP:5060 it
does not work :(
When I dial a call, INVITE / ACK / Trying / OK goes
fine because they are part of the same transaction
When remote party disconnects the call, BYE goes to
PUBLIC-IP port 5060 and router blocks de request. I
assume vendor sends BYE to 5060 because it is a new
transaction
-----------------------------------------------2--------------------------------------------------------------------------------------------------
If I use this line:
listen=udp:SOURCE-IP:5060 advertise PUBLIC-IP:52548
it work !!!!!!
When I dial a call, INVITE / ACK / Trying / OK goes
fine because they are part of the same transaction
When remote party disconnects the call, BYE goes to
PUBLIC-IP port 52548 and router forward the request
to Kamailio. Since there is an open connection.
I need to find the way to find the way to advertise
the public port internet router is doing NAT (PAT).
---------------------------------------------------------------------------------------------------------------------------------------------------
This trace is a call that worked fine because I
included line:
listen=udp:SOURCE-IP:5060 advertise PUBLIC-IP:52548
This trace is an INVITE with this line:
listen=udp:SOURCE-IP:5060 advertise PUBLIC-IP:52548
2016/01/13 20:10:15.793568 PRIVATE-IP-KAMAILIO:5060
-> VENDOR-IP:5060
INVITE sip:NUM-DESTINATION@VENDOR-IP SIP/2.0
Record-Route:
<sip:PUBLIC-IP:52548;lr=on;ftag=as3b72a453;vsf=AAAAAAEECQkCAgsNAXBeL0NPXVQfU0suMTY5LjIzMQ--;vst=AAAAAAAAAAAAAAAAAABCUEIAX1lKWF5MF0tB
A-;nat=yes>
Via: SIP/2.0/UDP
PUBLIC-IP:52548;branch=z9hG4bKdd74.992e238037882e809653f713a5a580a9.0
Via: SIP/2.0/UDP
PRIVATE-IP-SOFTPHONE:5060;received=PRIVATE-IP-SOFTPHONE;branch=z9hG4bK2f4e76ba;rport=5060
Max-Forwards: 69
From: NUM-SOURCE
<sip:NUM-SOURCE@PRIVATE-IP-KAMAILIO>;tag=as3b72a453
To: <sip:NUM-DESTINATION@sip.VENDOR-IP>
Contact:
<sip:NUM-SOURCE@PRIVATE-IP-SOFTPHONE:5060;alias=PUBLIC-IP~5060~1>
Call-ID:
329950447629810f7bdeaeed0cc034e1@PRIVATE-IP-SOFTPHONE:5060
CSeq: 102 INVITE
User-Agent: Kamailio
Date: Wed, 13 Jan 2016 19:10:15 GMT
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER,
SUBSCRIBE, NOTIFY, INFO, PUBLISH, MESSAGE
Supported: replaces, timer
Content-Type: application/sdp
Content-Length: 255
Trying.....
2016/01/13 20:10:15.842055 VENDOR-IP:5060 ->
PRIVATE-IP-KAMAILIO:5060
SIP/2.0 100 trying -- your call is important to us
Via: SIP/2.0/UDP
PUBLIC-IP:52548;branch=z9hG4bKdd74.992e238037882e809653f713a5a580a9.1;rport=52548
Via: SIP/2.0/UDP
PRIVATE-IP-SOFTPHONE:5060;received=PRIVATE-IP-SOFTPHONE;branch=z9hG4bK2f4e76ba;rport=5060
From: NUM-SOURCE
<sip:NUM-SOURCE@PRIVATE-IP-KAMAILIO>;tag=as3b72a453
To: <sip:NUM-DESTINATION@VENDOR-IP>
Call-ID:
329950447629810f7bdeaeed0cc034e1@PRIVATE-IP-SOFTPHONE:5060
CSeq: 102 INVITE
Server: kamailio
Content-Length: 0
And finally a BYE
2016/01/13 20:10:28.545526 VENDOR-IP:5060 ->
PRIVATE-IP-KAMAILIO:5060
BYE
sip:34982298000@PRIVATE-IP-SOFTPHONE:5060;alias=PUBLIC-IP~5060~1
SIP/2.0
Via: SIP/2.0/UDP
VENDOR-IP;branch=z9hG4bK26d8.847e6e14eef37e2cfc8b5e81d33de73d.0
From: <sip:675896262@PRIVATE-IP-KAMAILIO>;tag=gK0293ed93
To: "NUM-SOURCE" <sip:NUM-SOURCE@
<mailto:sip%3ANUM-SOURCE@norvoz.es>VENDOR-IP>;tag=as3b72a453
Call-ID:
329950447629810f7bdeaeed0cc034e1@PRIVATE-IP-SOFTPHONE:5060
CSeq: 28731 BYE
Max-Forwards: 69
Route:
<sip:PUBLIC-IP:52548;lr=on;ftag=as3b72a453;vsf=AAAAAAEECQkCAgsNAXBeL0NPXVQfU0suMTY5LjIzMQ--;vst=AAAAAAAAAAAAAAAAAABCUEIAX1lKWF5MF0tBMzA-;na
yes>
Reason: Q.850;cause=16
Content-Length: 0
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------
Finally, It is finally working because I hardcoded
NAT´d port.
I would like to find a way to avoid setting the port
in "hard".
Thank you
--
Daniel-Constantin Mierla
http://twitter.com/#!/miconda
<http://twitter.com/#%21/miconda> -
http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com
http://miconda.eu
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) -
sr-users mailing list
sr-users(a)lists.sip-router.org
<mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) -
sr-users mailing list
sr-users(a)lists.sip-router.org
<mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda
<http://twitter.com/#%21/miconda> -
http://www.linkedin.com/in/micond
<http://www.linkedin.com/in/miconda>
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users
mailing list
sr-users(a)lists.sip-router.org
<mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users
mailing list
sr-users(a)lists.sip-router.org
<mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla - http://www.asipto.com
http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> -
http://www.linkedin.com/in/micond <http://www.linkedin.com/in/miconda>
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing
list
sr-users(a)lists.sip-router.org <mailto:sr-users@lists.sip-router.org>
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
_______________________________________________
SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
sr-users(a)lists.sip-router.org
http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users