You'll need to get all the traffic sent to the switch mirrored on another
port. Look at your switch's documentation, if it is a managed one it may
support this. If you can't see the traffic won't do much good sniffing it.
If it isn't or doesn't provide port mirroring then you could take the
connection from the switch to another part of your network and drop it into
a hub and then plug your ethereal box into that hub as well. Like this:
(LAN w/ 200 desktops)
[switch]
|
[hub] --- Your Ethereal Box
|
[switch or router]
However you'll miss the inter-LAN traffic going from desktop to desktop.
Chris
On Fri, Oct 26, 2001 at 05:17:35PM -0400, None wrote:
> www.ethereal.com
>
> will capture packet/segment/frame...anything sent on the wire
> many option and filters...
>
> ----- Original Message -----
> From: "Jacques Chicourel Nunes Vaz - BA" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Thursday, October 25, 2001 1:33 PM
> Subject: Packet Sniffing in a Switched LAN
>
>
> Hi folks,
>
> I have a Lan with 200 desktops and I�d like to sniff it. What tool can I use
> to see all the packets ( going and coming ) ?
> Any suggestions ?
>
> Regards,
>
> Jacques
>
