[Freeswitch-users] NAT and Freeswitch

[curriegrad2004]

The SIP UA only needs to be configured to use NAT in this case. The FS
Server does not need any configuration in this case.

On Mon, Jul 25, 2011 at 5:55 PM, Narendra Sirugudi <nsirugudi at gmail.com> wrote:
> Just in case my diagram got bungled:
> The use case is:  Freeswitch in the public network, with a SIP UA in a
> private network talking to Freeswitch across a NAT Server.
> --naren
> On Tue, Jul 26, 2011 at 5:51 AM, Narendra Sirugudi <nsirugudi at gmail.com>
> wrote:
>>
>> __________________________
>> |                                            |
>> |________
>> ____|_____                                            ___________
>> ||              |                     |
>> |  74.1.1.1               74.1.1.2 |                   |
>> || SIP UA  |---------------------| NAT
>> Server|------------------------------------------| Freeswitch  |
>> ||________|10.10.10.10    |__________|         Public Network
>> |___________|
>> |                                             |
>> 74.1.1.0
>> |    Private Network 10.10.10.0   |
>> |__________________________|
>>
>> Hi,
>>
>> In the above topology, the typical issue one faces is that the SDP(rtp)
>> IP&port in SIP invite sent from the SIP UA to Freeswitch will contain the
>> private Ip address of the SIP UA.
>>
>> Assuming source NAT, the typical solution is to use a STUN server  in the
>> public network, which will help the SIP UA to discover the public IP&port
>> (for its private IP&port). The UA then sends the Invite with the SDP(RTP)
>> IP&port set to the discovered public IP&port. (I believe Freeswitch does not
>> have a STUN server within itself.)
>>
>> But suppose that we do not want to use the STUN solution. Does Freeswitch
>> itself offer any solutions in this case ?
>>
>> thanks,
>> --naren
>>
>
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