[Asterisk-Dev] VoIP Call Sniffer

[Brian Capouch]

Ray Burkholder wrote:
> Some Switches have a copying/SPAN mode to allow you to monitor active
> interfaces/vlans.
> Quoting Rich Adamson <radamson at routers.com>:
> 
> 
>>>>>The Bad News:
>>>>>
>>>>>| VoIPong is a utility which detects all Voice Over IP calls on a
>>>>>| pipeline, and for those which are G711 encoded, dumps actual
>>>>>| conversation to seperate wave files. It supports SIP, H323, Cisco's
>>>>>|  Skinny Client Protocol, RTP and RTCP.
>>>>
>>>>
>>>>This actually sounds very much like an Ethereal rip-off. Which has had
>>>>this functionality for at least two years.
>>>>
>>>
>>>Has anyone on the list actually gotten it to work?
>>>
>>>I installed it at several places on my network, just to play around. 
>>>And even it situations where I'm pretty certain Ethereal sees the calls 
>>>just fine, nothing gets reported by this program.
>>
>>If you are using ethernet switches, it won't see the rtp traffic.
>>

I ran it on the egress interface on a Linux router that passes my phone 
traffic off to the world.

That's what I meant by saying that in that same scenario, Ethereal works 
just fine for sniffing the VoIP traffic, so I would expect Voipong to 
work there as well.

B.