[Freeswitch-users] RTP Triple NAT Traversal

[Russell Treleaven]

how bout a tunnel?

On Tue, Nov 11, 2014 at 12:11 PM, Bill Ross <rossbcan at gmail.com> wrote:

> Folks
>
>
>
> FS: 1.4.13 / OpenWrt
>
>
>
> Topology
>
>
>
> SIP Phone           <-> WIFI AP / NAT <->   Cloud <->            Router /
> NAT <->             Router / NAT <-> FS
>
>
>
> 192.168.10.x                                                       Public
> IP               192.168.1.x                         10.0.0.128
>
>
>
> The SIP packets traverse the NAT chain correctly.
>
> The RTP packets from / to Phone are from / to 192.168.10.x, so, not
> getting through (because private N/W addresses embedded in SIP messaging)
>
>
>
> I am considering the following methods of handling this, but, before doing
> a lot of work / research, is there a better method?
>
>
>
> 1 - Using firewall rules (somehow, if possible, connection tracking?) to
> SNAT/DNAT packets to/from private network ranges which are not local lan
> range
>
> 2 – (appears simplest) Using channel variables (addresses) from SIP
> messaging to alter addresses prior to bridge.
>
>
>
> Any thoughts?
>
>
>
> Thanks;
>
> Bill Ross
>
>
>
>
>
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