[Freeswitch-users] NAT and Freeswitch

[Narendra Sirugudi]

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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