[asterisk-users] NAT and externip problem or bug

[Robert Jenkins]

That sounds to be what I'm missing!

Many thanks, Robert.


> From: Julian J. M. 
> Sent: 22 July 2006 10:19
> Subject: Re: [asterisk-users] NAT and externip problem or bug
> 
> Have you made sure you are also setting localnet in sip.conf?
> 
> externip=1.2.3.4
> localnet=192.168.0.0/255.255.255.255
> 
> Asterisk won't use externip for devices on your local network.
> 
> Julian.
> 
> On 7/22/06, Robert Jenkins <raj at jrw.co.uk> wrote:
> > Hi,
> >
> > I've recently got asterisk running on it's own pc inside my 
> firwewall.
> > Mostly it's working fine, but there is one silly problem I 
> can't figure out.
> > (For reference, Asterisk is the latest stable version as of last 
> > weekend 14th July. All connectivity is SIP or IAX).
> >
> > I initially had 'externip' set to my public IP. I have the 
> appropriate 
> > 5000 range ports forwarded to the asterisk PC and external 
> calls seem OK.
> >
> > The 'local' phones are a mixture of Sipura boxes and softphones.
> >
> > Problem:
> > No or one-way audio in internal calls.
> >
> > Reason: Asterisk appears to be using the 'externip' address for all 
> > SIP devices, regardless of their NAT setting.
> > Once a call starts, some softphones change the address they are 
> > responding to & use the external IP rather than the 
> asterisk PCs local 
> > IP on the same subnet...
> >
> > I have tried all NAT options and spent quite a while reading 
> > everything I can find about sip.conf, but I can't so far 
> find any way 
> > of changing this behaviour.
> >
> > All the internal phones work fine if I comment out the 
> externip line, 
> > but then the connections outside the firewall are likely to 
> have problems.
> >
> > Is there any way of configuring externip on a per-device basis, or 
> > should it only have effect on NATed devices?
> >
> > Thanks,
> > Robert Jenkins.
> >
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