>>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
