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Hi,

Is there any way to track down all VoIP devices on lan/wan networks ?
if so please provide some details how can it be done.

thx,
Marek

"marek" <> wrote in message
news:d5q5ne$ccs$...
> Hi,
>
> Is there any way to track down all VoIP devices on lan/wan networks ?

you mean IPPhones ?
or voice gateways ... or ?

Ciscoworks got tracking utility for IP Phones, with Cisco Call Managers

> if so please provide some details how can it be done.
>
> thx,
> Marek

What do you mean by VOIP devices on WAN networks?

Nmap is a scanning tool that can do OS fingerprinting. Depending on the
size of your network you could scan the entire IP block you use and try
to ID each device. Presumably all devices should be fingerprinted as
Windows, Cisco, Unix, linux, etc. If you get one that doesn't seem
familiar then you might want to investigate further.

IMHO I would get written permission from someone in your company who
has that authority before doing any kind of scanning.

Depends on the "VoIP device" What is the goal? Weed out rogue users?

You can look for various port numbers, but different systems use different
port numbers. Skype is esepcially clever about moving to different ports.

There are professional solutions that seek out VoIP users, such as
http://www.narus.com/
and open source programs that sniff for RTP and RTCP
http://www.enderunix.org/voipong/

What is your goal?