1.1 Privacy in wireless and wired networks
In this section, we first discuss eavesdropping. In a wired
network eavesdropping is possible, but in most cases it is
not practical. In most corporate networks, clients are connected
to switches and hence the traffic between the client
and the network is not readily visible to other clients. The
switches feed traffic into administered routers, which eventually
lead to border routers into some backbone network.
Here, to snoop, the routers have to be reprogrammed (difficult)
and the amount of traffic flowing through them makes
the overhead of sniffing and filtering prohibitive.