Re: [Ethereal-users] help

[herzog@xxxxxxxx]

>>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