I'm the head tenant of a flat and thus everything is in my name, including the internet.
Something that's been inflating my paranoia for a while now is what happens if one of my flatmates turns out to be a fiend and is doing illegal things with reckless abandon on my connection? It's going to look pretty bad considering my name is the only one tied to the account. (I'll point out that this is just paranoiac contingency planning, as far as I'm aware my flatmates are perfectly normal and decent people).
Not being an expert in copyright or illegal material law, I assume it would be enough to produce a log showing that the MAC Address belonging to flatmate 'X' was the one to connect to 'Y' (the unfavourable content).
Ideally I want something along the lines of Draytek's Smart Monitor, but that requires me buying a Raspberry Pi/bare-bones PC to run the software, and a separate Wireless AP as it only logs traffic through the LAN ports. I'm currently running a Draytek Vigor 2760VN by the way.
As this solution involves the purchase of hundreds of dollars worth of equipment anyway, I'm wondering if anyone knows of a more elegant solution, such as a router with this functionality inbuilt or attainable through flashing of open-source router firmware?