[SR-Users] NAT problem

[Daniel-Constantin Mierla]

Hello,

might be just a typing mistake, but:

rtpproxy -A  "private ip" -F -l "local ip" -m 10000 -M 20000 -s udp:*:7722
-d INFO

says that -A is private ip, it should be public IP.

Then, towards asterisk, is it everything on a private network, or does it
go again through some FW with public ip and port forwarding?

Cheers,
Daniel

On Tue, Sep 17, 2019 at 10:23 AM Arnout Van Den Kieboom <
arnoutvdkieboom at gmail.com> wrote:

> Hi,
>
> Firewall (PFsense) does port forwarding:
>
> inbound publicIP:5060 -->  private ip (192.168.150.119)
>
> inbound PublicIP:10000 to 20000 -> private ip (192.168.150.119)
>
> The public ip is set in the config file (kamailio.cfg) and RTP proxy is
> started with
>
> rtpproxy -A  "private ip" -F -l "local ip" -m 10000 -M 20000 -s udp:*:7722
> -d INFO
>
> In the cfg file NATtin is defined. (define with_nat)
> rtpproxy module is loaded.
>
> This works for most audio situations, except with the carrier
> Also very important: the carrier i am using for testing requires
> authentication, so I am using the uac module.
>
> I can see the registration with the provider, i see the inbound call in
> kamailio, I see the inbound call in asterisk.
> A connection is set up like it should, but then there is One way audio.
>
> The weird thing is:
> this route works without a problem: carrier --> FW -->kamailio --> (back
> through firewall) FW --> user subscribed to kamaiolio.
> (which should imply the same NAT'ing problems?)
>
> If you need more info, feel free to ask!
>
> PS: What i haven't tried yet is to call from asterisk through kamailio to
> the carrier number, this is what i'll set up and test next)
>
> Arnout
>
> Op ma 16 sep. 2019 om 13:26 schreef Daniel-Constantin Mierla <
> miconda at gmail.com>:
>
>> Hello,
>>
>> is Kamailio and RTPProxy (or Asterisk) using public IP addresses? Or they
>> listen on a private address and the firewall does port forwarding of a
>> public IP address?
>>
>> Cheers,
>> Daniel
>>
>> On Mon, Sep 16, 2019 at 10:51 AM Arnout Van Den Kieboom <
>> arnoutvdkieboom at gmail.com> wrote:
>>
>>> Hi,
>>>
>>> First of all, I'm really new to Kamailio. So sorry if I ask a stupid
>>> question, or perhaps a really weird one.
>>>
>>> I started using kamailio in a test environment about a week ago.
>>>
>>> for setup i have the situation for inbound calls: Carrier --> FW (NAT)
>>> --> Kamailio
>>> for outbound to an asterisk box i have: Kamailio --> FW (NAT) -->
>>> Asterisk
>>> for outbound to users i have: Kamailio --> FW (NAT) --> sip-phone
>>> (yealink) or grandstream
>>>
>>> During that time i was able to :
>>> Set up calls to users,
>>> Use the dispatcher module
>>> use the avpops module to do data lookups.
>>> Get calls from asterisk to kamailio user to work.
>>> Also calls between users (even though behind nat) are having good audio.
>>>
>>> I have installed rtpproxy and it works nicely.
>>>
>>> There is just one situation where it fails:
>>>
>>> Carrier --> FW (NAT) Kamailio --> asterisk
>>>
>>> There is only one way audio (from asterisk to carrier) but not from
>>> carrier to asterisk.
>>>
>>> I believe I need to do something with the rtp proxy module ... and tried
>>> different things (forcing the r flag, forcing the w flag)
>>> Any idea where I might need to start looking? It's been driving me
>>> crazy...
>>>
>>> Thanks
>>>
>>> Pemp
>>>
>>>
>>> _______________________________________________
>>> Kamailio (SER) - Users Mailing List
>>> sr-users at lists.kamailio.org
>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>>
>>
>>
>> --
>> Daniel-Constantin Mierla - https://www.asipto.com
>> https://twitter.com/miconda - https://www.linkedin.com/in/miconda
>> Kamailio Advanced Training - https://www.asipto.com/u/kat
>> _______________________________________________
>> Kamailio (SER) - Users Mailing List
>> sr-users at lists.kamailio.org
>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>>
> _______________________________________________
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>


-- 
Daniel-Constantin Mierla - https://www.asipto.com
https://twitter.com/miconda - https://www.linkedin.com/in/miconda
Kamailio Advanced Training - https://www.asipto.com/u/kat
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