[Freeswitch-users] Strange Reg

[Brian West]

Try setting your IP to stun:stun.fwdnet.net and let stun do the job.

/b

On May 21, 2007, at 2:20 AM, Dave wrote:

> Hi guys,
>
> I've got a rather interesting situation, here.  I've got an ATA
> registering to a FreeSWITCH(TM) (FS2), both behind NAT.  So far, so  
> good.
> Now, the FreeSWITCH(TM) registers to another FreeSWITCH(TM) outside  
> the
> NAT (FS2), and that's where the problems start.  Here's the  
> configuration:
>
> ATA<->FS2<->NAT<->Internet<->FS1
>
> ATA: 10.1.0.51 (behind NAT)
> FS2: 10.1.0.30 (behind NAT)
> FS1: freeswitch1.asnetinc.net (64.118.94.19)
>
> Now, here's where it gets very interesting.  This is what FS1 gets  
> when
> FS2 registers:
>> From:    [R352928 at freeswitch1.asnetinc.net]
>> Contact: ["user" <sip:R352928 at 10.0.0.221:39260>]
>> Expires: [3600]
>> nta_agent: tport: Bad message
>
> Now, where on Earth did 10.0.0.221 come from???  (I've actually  
> hardcoded
> both external_rtp_ip and server_name to the public IP of the NAT in  
> the
> FS2 config, but for some strange reason, FS2 apparently claims to  
> be at
> 10.0.0.221, which isn't even its local IP.)
>
> As if that's not interesting enough, I get this from FS1, too, when it
> tries to connect to another SIP server on the public Internet:
>> outbound(0xb4e1e1a0): detected NAT: freeswitch1.asnetinc.net !=  
>> 64.118.94.19
>
> Now, since a forward DNS resolution claims that the inequality is  
> false, I
> assume it attempted a reverse DNS lookup, which would fail (since  
> my ISP
> takes forever to update PTR records).
>
> As usual, any hints, tips, tricks, ideas, suggestions, flames,  
> questions,
> or (ideally) answers are greatly appreciated :-)
>
> Thank you,
>  - Dave
>
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