Transparent Traffic Sniffing
Let's assume I throw in a multiple port Ethernet card
into my Linux box -- beyond the interface I use now.
Would there be any software that I could use to put
the two interfaces inline with an existing cable run to
transparently gather packets on the wire? Since I do
not have a hub or managed switch that I can use for
doing the normal port monitoring setup. NICs are not
expensive, so it should be a quick/easy solution if the
software exists for doing such a configuration.