[Freeswitch-users] NAT: SDP with local IP in o-line unicast_address

Peter Steinbach lists at telefaks.de
Tue Nov 11 16:57:16 MSK 2014


Hello Brian,

I had the chance to have a time slot to test the behaviour with a brand
new compiled Freeswitch from GIT. The Problem has disappeared. The
previously tested Freeswitch was about 5 months old, so there must have
been some fix in the meantime.
Sorry for the inconvenience.

Best regards
Peter




On 11/11/14 13:27, Peter Steinbach wrote:
> Hello Brian,
>
> a reloadacl shows
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1306 Created ip list
> rfc6598.auto default (deny)
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 100.64.0.0/10 (allow) [] to list rfc6598.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1312 Created ip list
> rfc1918.auto default (deny)
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 10.0.0.0/8 (allow) [] to list rfc1918.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 172.16.0.0/12 (allow) [] to list rfc1918.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 192.168.0.0/16 (allow) [] to list rfc1918.auto
>
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1320 Created ip list
> wan.auto default (allow)
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 0.0.0.0/8 (deny) [] to list wan.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 10.0.0.0/8 (deny) [] to list wan.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 172.16.0.0/12 (deny) [] to list wan.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 192.168.0.0/16 (deny) [] to list wan.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 169.254.0.0/16 (deny) [] to list wan.auto
>
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1330 Created ip list
> nat.auto default (deny)
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1332 Adding
> 192.168.206.241/255.255.255.255 (deny) to list nat.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 10.0.0.0/8 (allow) [] to list nat.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 172.16.0.0/12 (allow) [] to list nat.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 192.168.0.0/16 (allow) [] to list nat.auto
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 100.64.0.0/10 (allow) [] to list nat.auto
>
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1342 Created ip list
> loopback.auto default (deny)
> 2014-11-11 13:21:37.079554 [NOTICE] switch_utils.c:325 Adding
> 127.0.0.0/8 (allow) [] to list loopback.auto
>
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1348 Created ip list
> localnet.auto default (deny)
> 2014-11-11 13:21:37.079554 [NOTICE] switch_core.c:1351 Adding
> 192.168.206.241/255.255.255.255 (allow) to list localnet.auto
>
> 2014-11-11 13:21:37.179566 [NOTICE] switch_core.c:1376 Created ip list
> lan default (allow)
> 2014-11-11 13:21:37.179566 [NOTICE] switch_utils.c:325 Adding
> 192.168.42.0/24 (deny) [] to list lan
> 2014-11-11 13:21:37.179566 [NOTICE] switch_core.c:1451 Adding
> 192.168.42.0/24 (deny) to list lan
> 2014-11-11 13:21:37.179566 [NOTICE] switch_utils.c:325 Adding
> 192.168.42.42/32 (allow) [] to list lan
> 2014-11-11 13:21:37.179566 [NOTICE] switch_core.c:1451 Adding
> 192.168.42.42/32 (allow) to list lan
>
> 212.xxx.xxx.106 is set for ext-rtp-ip and ext-sip-ip.
>
> Best regards
> Peter
>
> On 11/07/14 14:16, Brian West wrote:
>> what do you have local-network-acl, ext-rtp-ip and ext-sip-ip?
>>
>> On Fri, Nov 7, 2014 at 6:23 AM, Peter Steinbach <lists at telefaks.de
>> <mailto:lists at telefaks.de>> wrote:
>>
>>     Hell,
>>
>>     we have the following problem:
>>
>>     Our Freswitch is behind NAT. We are sending faxes to a SIP provider.
>>     Dependend on the destination number, the faxes are received or not.
>>     Faxes are always sent via the same SIP provider and the same
>>     dialplan,
>>     but I expect, they may be routed differently via other,
>>     subsequent SIP
>>     providers.
>>
>>     Regarding the SDP I can see, that the c-line does contain the our
>>     external IP, but the o-Line does contain the local IP in the
>>     unicast_address field.
>>     We are routing the call via a defined gateway in the external
>>     profile,
>>     which has external_sip_ip set and external_rtp_ip set.
>>     Dialplan is:
>>     <action application="export" data="t38_passthru=true"/>
>>     <action application="set" data="proxy_media=true"/>
>>     <action application="bridge"
>>     data="sofia/gateway/QSC/06912345678 at sip.qsc.de
>>     <mailto:06912345678 at sip.qsc.de>"/>
>>
>>     Here is the SDP
>>     ====================================
>>     v=0.
>>     o=FreeSWITCH 1037989557 1037989558 IN IP4 192.168.206.241.
>>     s=FreeSWITCH.
>>     c=IN IP4 212.xxx.xxx.106.
>>     t=0 0.
>>     m=audio 12056 RTP/AVP 0 8.
>>     a=rtpmap:0 PCMU/8000/1.
>>     a=rtpmap:8 PCMA/8000/1.
>>     a=maxptime:240.
>>     ====================================
>>
>>     I suspect, that the following SIP providers may have a problem
>>     with the
>>     o-line with the local IP.
>>     So - Is there any way to control this? E.g. via Dialplan variable?
>>
>>     ACL also seems to be fine
>>     2014-11-07 12:31:10.599563 [NOTICE] switch_utils.c:324 Adding
>>     192.168.0.0/16 <http://192.168.0.0/16> (allow) [] to list
>>     rfc1918.auto
>>     2014-11-07 12:31:10.599563 [NOTICE] switch_utils.c:324 Adding
>>     192.168.0.0/16 <http://192.168.0.0/16> (allow) [] to list nat.auto
>>
>>     I see the same behaviour also in
>>     https://freeswitch.org/jira/browse/FS-5909 "ext-xxx-ip ignored with
>>     proxy_media turned on"
>>     There is a link for a patch, which is no longer available. Did
>>     this go
>>     into the main release? Does anybody have this patch?
>>
>>
>>     --
>>     With kind regards
>>     Peter
>>
>>
>>     _________________________________________________________________________
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>>
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>>
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>>
>>
>>
>>
>> -- 
>>
>> */Brian West/*
>> brian at freeswitch.org <mailto:brian at freeswitch.org>
>>
>>
>> */Twitter: @FreeSWITCH , @briankwest/*
>> http://www.freeswitchbook.com
>> http://www.freeswitchcookbook.com
>>
>> *T:*+19184209001 | *F:*+19184209002 | *M:*+1918424WEST (9378)
>> *iNUM:*+883 5100 1420 9001 | *ISN:*410*543 | *Skype:*briankwest
>>
>>
>>
>> _________________________________________________________________________
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>> http://www.freeswitchsolutions.com
>>
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>>
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>
>
> -- 
> With kind regards
> Peter Steinbach 
>
> Telefaks Services GmbH
> mailto:lists (att) telefaks.de
> Internet: www.telefaks.de
>


-- 
With kind regards
Peter Steinbach 

Telefaks Services GmbH
mailto:lists (att) telefaks.de
Internet: www.telefaks.de

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