[Freeswitch-users] FS uses private rtp address in the SDP

afshin afzali a.afzali2003 at gmail.com
Sat Aug 16 17:02:27 MSD 2014


Hi Douglas,

Thanks for your reply,
I)

In my scenario both of FreeSWITCH and client are behind the firewall.

II)

<X-PRE-PROCESS cmd="set" data="bind_server_ip=auto"/>
<X-PRE-PROCESS cmd="set" data="external_rtp_ip=X.Y.Z.W"/>
<X-PRE-PROCESS cmd="set" data="external_sip_ip=X.Y.Z.W"/>

I have a static public IP (for Freeswitch) and I know what it is so I
specified it explicitly.

Do I have to set bind_server_ip to a specific IP in case of NAT traversal
as I specified local IP addresses for sip and rtp?

III)
in the SIP profile
<param name="sip-ip" value="192.168.10.59"/>
<param name="rtp-ip" value="192.168.10.59"/>
<param name="ext-sip-ip" value="X.Y.Z.W"/>
<param name="ext-rtp-ip" value="X.Y.Z.W"/>
for apply-nat-acl I examined nat.auto, rfc1918, ... :(

I did not refer to external_sip_ip / external_rtp_ip vaiables in the SIP
profile and explicitly defined external static IP.


BEST,

Afshin



On Sat, Aug 16, 2014 at 5:01 PM, Douglas Adami <
webmaster.rumodigital at gmail.com> wrote:

> Hi,
>
> NAT scenario, correct?
> https://confluence.freeswitch.org/display/FREESWITCH/NAT+Traversal
>
> try this:
>
> vars.xml
> <X-PRE-PROCESS cmd="set" data="bind_server_ip=my.domain.com"/>
> <X-PRE-PROCESS cmd="set" data="external_sip_ip=stun:stun.freeswitch.org"/>
> <X-PRE-PROCESS cmd="set" data="external_rtp_ip=stun:stun.freeswitch.org"/>
>
>
> sip_profiles:
>
> sipinterface_1.xml
> <param name="apply-nat-acl" value="nat.auto"/>
> <param name="ext-sip-ip" value="$${external_sip_ip}"/>
> <param name="ext-rtp-ip" value="$${external_rtp_ip}"/>
>
> Doug
>
>
> On Sat, Aug 16, 2014 at 7:26 AM, afshin afzali <a.afzali2003 at gmail.com>
> wrote:
>
>> Hi Miguel,
>>
>> I do not understand how the ACL (if you mean apply-nat-acl) can effects
>> on using public IP in SDP when I specified both ext-sip-ip and ext-rtp-ip
>> in sip profile!
>>  I changed the apply-nat-acl to a "always allow" and "rfc1918" but does
>> not make difference.
>>
>> Afshin
>>
>>
>> On Thu, Aug 14, 2014 at 3:18 PM, Miguel Oyarzo <miguelaustro at gmail.com>
>> wrote:
>>
>>>
>>> Wrong ACL?
>>>
>>>
>>> On Wed, Aug 13, 2014 at 10:06 PM, afshin afzali <a.afzali2003 at gmail.com>
>>> wrote:
>>>
>>>> Hi FreeSWITCHers:
>>>>
>>>> I configured a sip profile as bellow:
>>>>
>>>>
>>>> =================================================================================================
>>>> Name                    sipinterface_1
>>>> Domain Name             N/A
>>>> Auto-NAT                false
>>>> DBName                  sofia_reg_sipinterface_1
>>>> Pres Hosts
>>>> Dialplan                XML
>>>> Context                 context_1
>>>> Challenge Realm         auto_to
>>>> RTP-IP                  192.168.10.59
>>>> Ext-RTP-IP              X.Y.Z.W
>>>> SIP-IP                  192.168.10.59
>>>> Ext-SIP-IP               X.Y.Z.W
>>>> URL                     sip:mod_sofia at X.Y.Z.W:5060
>>>> BIND-URL                sip:mod_sofia at X.Y.Z.W
>>>> :5060;maddr=192.168.10.59;transport=udp,tcp
>>>> HOLD-MUSIC              N/A
>>>> OUTBOUND-PROXY          N/A
>>>> CODECS IN               G722,PCMU,PCMA,GSM
>>>> CODECS OUT              G722,PCMU,PCMA,GSM
>>>> TEL-EVENT               101
>>>> DTMF-MODE               rfc2833
>>>> CNG                     13
>>>> SESSION-TO              0
>>>> MAX-DIALOG              0
>>>> NOMEDIA                 false
>>>> LATE-NEG                false
>>>> PROXY-MEDIA             false
>>>> ZRTP-PASSTHRU           false
>>>> AGGRESSIVENAT           true
>>>> CALLS-IN                0
>>>> FAILED-CALLS-IN         0
>>>> CALLS-OUT               0
>>>> FAILED-CALLS-OUT        0
>>>> REGISTRATIONS           1
>>>>
>>>> for every INVITE that comes in via this profile, FS replys with this
>>>> SDP:
>>>>
>>>>    v=0
>>>>    o=FreeSWITCH 1407905843 1407905844 IN IP4 192.168.10.59
>>>>    s=FreeSWITCH
>>>>    c=IN IP4 192.168.10.59
>>>>    t=0 0
>>>>    m=audio 25142 RTP/AVP 0 101
>>>>    a=rtpmap:0 PCMU/8000
>>>>    a=rtpmap:101 telephone-event/8000
>>>>    a=fmtp:101 0-16
>>>>    a=ptime:20
>>>>
>>>> Although the Contact header of 200 OK is correct :
>>>> Contact: <sip:4000 at X.Y.Z.W:5060;transport=udp>
>>>>
>>>>
>>>> Appreciate all comments,
>>>> -- Afshin
>>>>
>>>>
>>>> _________________________________________________________________________
>>>> Professional FreeSWITCH Consulting Services:
>>>> consulting at freeswitch.org
>>>> http://www.freeswitchsolutions.com
>>>>
>>>> 
>>>> 
>>>>
>>>> Official FreeSWITCH Sites
>>>> http://www.freeswitch.org
>>>> http://wiki.freeswitch.org
>>>> http://www.cluecon.com
>>>>
>>>> FreeSWITCH-users mailing list
>>>> FreeSWITCH-users at lists.freeswitch.org
>>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>>> UNSUBSCRIBE:
>>>> http://lists.freeswitch.org/mailman/options/freeswitch-users
>>>> http://www.freeswitch.org
>>>>
>>>>
>>>
>>>
>>> --
>>> "Efficiency is doing things right; effectiveness is doing the right
>>> things (Peter Drucker)"
>>>
>>> Miguel Oyarzo
>>> DevOps & VoIP Engineer
>>> Linux User: # 483188 - counter.li.org
>>> http://au.linkedin.com/in/mikeaustralia
>>> Melbourne, Australia
>>>
>>> _________________________________________________________________________
>>> Professional FreeSWITCH Consulting Services:
>>> consulting at freeswitch.org
>>> http://www.freeswitchsolutions.com
>>>
>>> 
>>> 
>>>
>>> Official FreeSWITCH Sites
>>> http://www.freeswitch.org
>>> http://wiki.freeswitch.org
>>> http://www.cluecon.com
>>>
>>> FreeSWITCH-users mailing list
>>> FreeSWITCH-users at lists.freeswitch.org
>>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>>> http://www.freeswitch.org
>>>
>>>
>>
>> _________________________________________________________________________
>> Professional FreeSWITCH Consulting Services:
>> consulting at freeswitch.org
>> http://www.freeswitchsolutions.com
>>
>> Official FreeSWITCH Sites
>> http://www.freeswitch.org
>> http://confluence.freeswitch.org
>> http://www.cluecon.com
>>
>>
>> 
>> 
>>
>> FreeSWITCH-users mailing list
>> FreeSWITCH-users at lists.freeswitch.org
>> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
>> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
>> http://www.freeswitch.org
>>
>
>
> _________________________________________________________________________
> Professional FreeSWITCH Consulting Services:
> consulting at freeswitch.org
> http://www.freeswitchsolutions.com
>
> Official FreeSWITCH Sites
> http://www.freeswitch.org
> http://confluence.freeswitch.org
> http://www.cluecon.com
>
> 
> 
>
> FreeSWITCH-users mailing list
> FreeSWITCH-users at lists.freeswitch.org
> http://lists.freeswitch.org/mailman/listinfo/freeswitch-users
> UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users
> http://www.freeswitch.org
>
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