1 Sep
2022
1 Sep
'22
4:26 p.m.
Hello,
I tried topoh and topology hiding is working well towards the external network but it does
not restore the Via and Record-Route on the replies.
Maybe I miss something in the configuration, I attached a pcap file if you can help me.
What I want is to restore all the Via and Record-Route headers from the incoming INVITE to
the Session Progress returned back to the previous node.
Thanks
Anthony
________________________________
De : Henning Westerholt <hw(a)gilawa.com>
Envoyé : jeudi 1 septembre 2022 12:14
À : Anthony Blandin <anthony.blandin(a)airnity.com>om>; Kamailio (SER) - Users Mailing
List <sr-users(a)lists.kamailio.org>
Objet : RE: How to hide Via and Record-Route header to external network and restore them
to internal network?
Hello,
the topology hiding is applied to both sides, so the modules not care. You can control
execution with parameters and also some event route, depending on the module and Kamailio
version.
Just note if you want the headers to really removed from the message, consider using topos
with a SQL DB or redis.
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>
From: Anthony Blandin <anthony.blandin(a)airnity.com>
Sent: Thursday, September 1, 2022 11:42 AM
To: Henning Westerholt <hw(a)gilawa.com>om>; Kamailio (SER) - Users Mailing List
<sr-users(a)lists.kamailio.org>
Subject: RE: How to hide Via and Record-Route header to external network and restore them
to internal network?
Thanks Henning.
I will try it.
How topoh determines that it is a SIP message to be sent outside my network or not?
Anthony
________________________________
De : Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>>
Envoyé : jeudi 1 septembre 2022 11:16
À : Anthony Blandin
<anthony.blandin@airnity.com<mailto:anthony.blandin@airnity.com>>; Kamailio
(SER) - Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
Objet : RE: How to hide Via and Record-Route header to external network and restore them
to internal network?
Vous ne recevez pas souvent de courriers de la part de
hw@gilawa.com<mailto:hw@gilawa.com>. Découvrez pourquoi cela est
important<https://aka.ms/LearnAboutSenderIdentification>
Hi Anthony,
the restore happens internally and in the configuration you are able to access the
headers, this is transparent for you.
Just give it a try in your lab, you can easily see it on the network.
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>
From: Anthony Blandin
<anthony.blandin@airnity.com<mailto:anthony.blandin@airnity.com>>
Sent: Thursday, September 1, 2022 11:08 AM
To: Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>>; Kamailio (SER) -
Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
Subject: RE: How to hide Via and Record-Route header to external network and restore them
to internal network?
Hi Henning,
Yes, I looked to topoh to hide topology but I didn't find a way to restore back the
Via and Record-Route headers when I get replies from the external network.
Regards,
Anthony
________________________________
De : Henning Westerholt <hw@gilawa.com<mailto:hw@gilawa.com>>
Envoyé : jeudi 1 septembre 2022 11:01
À : Kamailio (SER) - Users Mailing List
<sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>>
Cc : Anthony Blandin
<anthony.blandin@airnity.com<mailto:anthony.blandin@airnity.com>>
Objet : RE: How to hide Via and Record-Route header to external network and restore them
to internal network?
Vous ne recevez pas souvent de courriers de la part de
hw@gilawa.com<mailto:hw@gilawa.com>. Découvrez pourquoi cela est
important<https://aka.ms/LearnAboutSenderIdentification>
Hello,
already investigated the topology hiding modules (topos, topoh)? They might be not doing
exactly what you are describing, but usually are used for this kind of scenarios.
Cheers,
Henning
--
Henning Westerholt – https://skalatan.de/blog/
Kamailio services – https://gilawa.com<https://gilawa.com/>
From: sr-users
<sr-users-bounces@lists.kamailio.org<mailto:sr-users-bounces@lists.kamailio.org>>
On Behalf Of Anthony Blandin
Sent: Thursday, September 1, 2022 10:58 AM
To: sr-users@lists.kamailio.org<mailto:sr-users@lists.kamailio.org>
Subject: [SR-Users] How to hide Via and Record-Route header to external network and
restore them to internal network?
Hi Community,
I have set up a SBC with Kamailio.
I am testing voice call from external network to my network and voice call from my network
to external network.
When I send SIP messages to external network, I want to hide Via and Record-Route headers
but when I receive replies from the external network I want to restore these Via and
Record-Route headers to my network.
How to store and restore these headers in Kamailio configuration ?
Could you help on this?
Thanks
Anthony Blandin