Re: Vonage complains about VoIP-blocking

[Daniel Golding <dgolding () burtongroup com>]

Is there any move on the part of providers/manufacturers to use more secure
protocols for this?

- Dan

On 2/15/05 5:22 PM, "Jason L. Schwab" <jlschwab () jlschwab com> wrote:

> Hi;
>
> I unplugged and reset my vonage Motorola MTA device, and it did tftp to
> home to get its configs.
>
> -Jason
>
> -----Original Message-----
> From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of
> Hannigan, Martin
> Sent: Tuesday, February 15, 2005 3:14 PM
> To: 'Jay Hennigan'
> Cc: Eric Gauthier; nanog () merit edu
> Subject: RE: Vonage complains about VoIP-blocking
>
>
> > -----Original Message-----
> > From: Jay Hennigan [mailto:jay () west net]
> > Sent: Tuesday, February 15, 2005 5:10 PM
> > To: Hannigan, Martin
> > Cc: Eric Gauthier; nanog () merit edu
> > Subject: RE: Vonage complains about VoIP-blocking
> >
> >
> > On Tue, 15 Feb 2005, Hannigan, Martin wrote:
> >
> > > > Something else to consider.  We block TFTP at our border for
> > > > security reasons
> > > > and we've found that this prevents Vonage from working.
> > > > Would this mean that
> > > > LEC's can't block TFTP?
> > >
> > >
> > > Was that a device trying to phone home and get it's configs?
> > > Cisco, Nortel, etc. phone home and get configs via tftp.
> > >
> > > Vonage doesn't need to phone home for config. The device is
> > > programmed (router) and it registers with the call manager.
> > > If you analyze the transactions it's about 89% SIP and 11% SDP.
> >
> > Vonage devices initiate an outbound TFTP connection back to Vonage to
> > snarf their configs on initial connection and also
> > (presumably) on reboot.
>
> I tested the reboot. I didn't see it. I agree in general
> and think that providers shouldn't block tftp, IMHO.

-- 
Daniel Golding
Network and Telecommunications Strategies
Burton Group