[Freeswitch-users] FS behind NAT

[Brian Foster]

You need to have a seperate sofia profile handling your authenticated
traffic outside the lan (your remote ip phones). We call it doublenat. It
makes no difference if your switch has a private IP and public IP or just
private IP, it works the same.

See:
http://wiki.freeswitch.org/wiki/Example_Offsite_phones

http://wiki.freeswitch.org/wiki/General_NAT_example_scenarios

It generally works well for us. We have an FS server tied to a private IP,
one interface.

Thank you,

Brian Foster
Project Manager/Owner's Rep.
Davri Investments, Inc.
O: 317-787-2686 x2102
M: 317-600-9753
E: bdfoster at davri.com
Indianapolis, Indiana

Sent from a mobile device.
On Aug 7, 2013 11:17 PM, "Vincent Xia" <gmangudai at gmail.com> wrote:

> im having my FS box behind NAT, the network topology is something like:
>
> IP PHONE A(Public IP)<------->NAT<------>FS(Private IP, with a public
> IP)<------->IP PHONE B(Private IP)
>
> i was trying to have IP PHONE B able to make call to IP PHONE A and have
> two-way talk.
>
> with the default FS configuration when IP PHONE B calls IP PHONE A,
> there's only one-way talk, A can hear B but B cannot hear A.
>
> then i decided to use stun by modifying:
> vars.xml
> <X-PRE-PROCESS cmd="set" data="external_rtp_ip=stun:stun.freeswitch.org"/>
>  // this is the default config
> <X-PRE-PROCESS cmd="set" data="external_sip_ip=stun:stun.freeswitch.org"/>
>  // this is the default config
>
> internal.xml
> <param name="ext-rtp-ip" value="stun:stun.freeswtich.org"/>
> <param name="ext-sip-ip" value="stun:stun.freeswtich.org"/>
>
> external.xml
> <param name="ext-rtp-ip" value="stun:stun.freeswtich.org"/>
> <param name="ext-sip-ip" value="stun:stun.freeswtich.org"/>
>
> but while restarting FS, there's error reporting:
> 2013-08-08 10:33:58.933096 [ERR] sofia_glue.c:1043 STUN Failed!
> stun.freeswitch.org:3478 [Bind Error!]
> 2013-08-08 10:33:58.933096 [ERR] sofia.c:4074 Failed to get external ip.
> 2013-08-08 10:33:58.934072 [NOTICE] sofia.c:4754 Started Profile external
> [sofia_reg_external]
> ...
> 2013-08-08 10:34:00.859927 [ERR] sofia_glue.c:1043 STUN Failed!
> stun.freeswitch.org:3478 [Bind Error!]
> 2013-08-08 10:34:00.859927 [ERR] sofia.c:4074 Failed to get external ip.
> 2013-08-08 10:34:00.860904 [NOTICE] sofia.c:4754 Started Profile internal
> [sofia_reg_internal]
>
> so am i still missing some configuration or anything else was wrong?
>
>
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