From: "Marius-Simion Cristea"
<cristea12@xxxxxxxxx>
Hi,
I want to capture the traffic (the commands) that are sent from a SCALANCE
touch panel
emulator to a PLC. The configuration of my network looks like this:
Emulator---HUB---Scalance_Switch---PLC
|
PC (Wireshark)
I'm giving commands to the PLC from the emulator, the PLC responds, but I
can't capture
any of those commands using Wireshark, i'm seeing only ARP, LLDP, PN-DCP
packets and some
other broadcast packets.
Is it possible to capture those commands using Wireshark? if so, what am I
doing wrong?
because, as far as I know the hub must send all the packets that are meant
for the PLC
also to the PC.
Thanks!
Maybe I am off but...
Instead of
Emulator---HUB---Scalance_Switch---PLC
|
PC (Wireshark)
Go this route...
Drop an Ethernet hub between the Scalance_Switch and the PLC and sniff from
that POV.
{ Of course making sure the PC w/Wireshark has a promiscuous NIC }
Emulator---HUB---Scalance_Switch---HUB---PLC
|
PC (Wireshark)
--
Dave
Multi-AV Scanning Tool - http://multi-av.thespykiller.co.uk
http://www.pctipp.ch/downloads/dl/35905.asp
