Setup as following
PCs <--> Wireless Router <--> Modem <--> ISP
I have control up to the ISP level.
I am getting an issue where one of the PCs in the subnet is consistently generating a lot of traffic that is clogging up the bandwidth. Without further information, it is near impossible to point finger at any one of the computers.
I would like to setup some kind of monitoring using consumer grade products (i.e. no commercial grade expensive switches, router... etc). I delve into the articles about port mirroring, packet sniffing... but these are not possible in the consumer grade hardware these days, especially nobody sell a hub anymore (otherwise my original idea is to use a hub between router and model to do packet sniffing).
Any suggestions on how I can approach monitoring the traffic? I will appreciate your response beforehand.
p.s. On the side unrelated to the question, if anybody can tell me why nobody sells a hub anymore and what product has replaced it I'd be interested.