Let's say that we have a room with a router and 30 PC's plugged in. Every PC has it's own 'subnet'. If we check for available hosts via ettercap/wireshark (on any PC), it only discoveres two hosts: our own and the router. I couldn't find any switches in the room, but they are probably hidden somewhere.
My teacher gave me a task, to sniff his wordpress password. As you probably know, login is easy, cause it can be easily enumerated, for ex. with wpsniff. In my own network, in home I work on w-shark, cause I have one mask, one router and it's simple - every packet is visible.
In the class, my IP address is like '10.169.100.181' and the 'main host' is on '100.1'.
Is there any way to configure ettercap to work with VLSM subnets, or any other way to retrieve any packet that is in a different subnet, but on the same router? He said on the first lesson, that there is a plugin for Firefox, that may work with a thing like this.
I know, that this question is stupid and you'll say that I should go learn somewhere, but I don't know where. If there is someone who can point a way (just the way), I would be grateful :)