Thanks, I have got a hub and plugged the pc, ip phone and router into it .
When I capture I get to see some UDP,ICMP,ARP protocols but not any of the
H323 family protocols from my IP phone.
What could be the reason
Thanks
----- Original Message -----
From: <herzog@xxxxxxxx>
To: "Ethereal user support" <ethereal-users@xxxxxxxxxxxx>
Sent: Saturday, May 01, 2004 11:19 PM
Subject: Re: [Ethereal-users] help
> >>On Tue, 27 Apr 2004, james wrote:
> > I have a 1 ip phone connected to a 4 port ethernet adsl router to make
> > voip calls. My pc(loaded ethereal analyser) is connected to another port
on
> > the same 4 port ethernet adsl router.
> >
> > Is this configuration right to capture the protocol exchanged between
my ip
> > phone and voip provider using my pc.
>
> No. More than likely, those 4 ports on the broadband router are switched,
> so your PC will not be able to see traffic which is not originated from
nor
> destined for your PC.
>
> What you will need to do it either buy a cheap hub and plug the PC, the IP
> phone, and the router into it...or, buy an ethernet tap to put in-line
> between the IP phone and the router (would also require a second NIC in
> the PC if you which to maintain internet access from the PC while sniffing
> traffic)...
>
>
> --
> Larry Herzog Jr. "Do nothing out of selfish ambition or vain
> VROC #11489 conceit, but in humility consider others
> herzog@xxxxxxxx better than yourselves." - Philippians 2:3
>
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