I was confused by the question too, but if I focus
only on the question asked, namely, "Is there a way
to capture packets from/to a selected list of IP address on a
LAN?", then the answer is yes.
First you
must set things up so the machine doing the capturing has access to the
packets of interest. This may involve adding a
hub, enabling port mirroring on a switch, etc. See http://wiki.wireshark.org/CaptureSetup for
more information.
And second, you must use an appropriate capture filter. For example, if you want to
capture all packets sent from/to 2 hosts (assume IP addresses IP1 and IP2),
to any other host then you might use the following capture filter to accomplish
this: "host IP1 or host IP2". If you only want to see packets sent between
those 2 hosts, then you would use, "host IP1 and host IP2". See http://wiki.wireshark.org/CaptureFilters for
more information on capture
filters.
Now if you want to "restrict the
packet capturing to a set of machines ...", then
that's a different problem to solve.
- Chris
Nag,
I'm not sure what you mean by your question. Capturing
packets is for the most part passive, in that you are saving packets to a file
for viewing. Wireshark does not propagate packets to the rest of the network, no
matter how virus laden they are. (Certainly as long as those packets are not
specially crafted to maybe exploit a vulnerability in wireshark itself, which
while it ihas been done, is very very rarely actually seen in the wild).
Regards, Martin
MartinVisser99@xxxxxxxxx
On Tue, Jun 15, 2010 at 6:55 PM, Nagendrababu Maseedu
<Nagendra.Babu.Maseedu@xxxxxxxxxxxxx>
wrote:
Hi,
Is there a way to capture packets
from/to a selected list of IP address on a LAN?
The need is to restrict the packet
capturing to a set of machines so that security breach does not happen on
other machines on the same network.
Please let me know if you have any
other mechanism to satisfy this need.
Kind regards,
Nag.
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