On Tue May 22 2007 15:17:45 Reza - Asterisk Enthusiast wrote:
> Hello Mark:
>
> Personally I do not recommend VOIP through a VPN.   Other's might disagree,
> but I have my style.   The inability of RTP packets not flowing through is
> to do strictly with how your VPN is structured.    I know of people who
> implemented VOIP on a VPN.
>
> Technically speaking, UDP can flow through a VPN.   They are just data
> packets.
>
> Your IAX routing through another Asterisk would merely allow you to easily
> manage one port (4569) through which all your signaling and audio is passed
> through.  It does increase the headache of managing another box though. 
> However with a 2nd * you would not have to worry about forwarding or
> allowing a larger range of ports in your VPN and/or Firewall.
>
> My motto has always been to keep things simple.  A VPN increases complexity
> and introduces over engineering (in my humble opinion).  It definitely has
> benefits, but in an office of 10 or less people -- I see VOIP on VPN,
> adding more complexity to debug technical issues.    Just my 2 cents.
>
> Cheers!
> Reza.
>
> ----- Original Message -----
> From: "Mark Borg" <[EMAIL PROTECTED]>
> To: "Reza - Asterisk Enthusiast" <[EMAIL PROTECTED]>; <[email protected]>
> Sent: Tuesday, May 22, 2007 9:55 AM
> Subject: Re: [on-asterisk] rtp working thru vpn....
>
> > Hi Reza, would you have a thought as to why rtp doesn't seem to pass thru
> > a vpn tunnel? Still with this same config; it registers and I can dial
> > the remote, it rings then hangs up immediate. I have reinvite=no and also
> > nat=yes so reinvite should be disabled anyways. it looks to me like the
> > rtp route is not succeeding - is it a property of vpn not to pass udp?
> > some items from the sip debug log -
> > "peer audio RTp is at port 192.168.0.226:3000"  - so * sees the port...
> > "capabilities ...." both have ulaw/alaw avail;
> > sip show peers shows monitored status at 135ms -
> >
> > i see no reason that rtp would not pass transparent thru vpn tunnel.
> >
> > in your opinion should i stick a second * at the remote site & use iax
> > instead of trying to make sip/rtp work?
> > thanks for your help.
> >
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yes I was attracted to the single (smoking) port theory... thanks there will 
be more working on it after-hours. 

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