[asterisk-users] NAT and externip problem or bug

[Robert Jenkins]

Oh well..

I already had localnet set:

localnet = 192.168.0.0          ; Internal NETWORK address
localmask = 255.255.255.0       ; Internal netmask 

All the involved PCs & Sipura boxes are using 192.168.0.x addresses.

The Sipura boxes work, but the fact that asterisk is sending the external IP
to any device on the local network seems to me to be a bug..

Robert Jenkins.

> Subject: RE: [asterisk-users] NAT and externip problem or bug
> 
> 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.