Let's say I setup a transparent/isolating Tor proxy (dedicated machine/router), through which all traffic is forced before going out to the Internet.
There are a five machines "behind" that Tor proxy, all used by different people to surf the web.
Now the question is, what data can the various endpoints (hidden services or clearnet) gather and could they link one user's traffic to another one's?
If one user tells his identity, could adversaries derive that the other four people must also be at that same location (or at least come from the same proxy)?
(So far, I've found this answer, basically indicating that, for high anonymity, all users would have to use a different SocksPort/TransPort on the proxy. I hope that's outdated though, since it would mean that the described isolating proxy concept would require high maintenance - setting up one TransPort per user.)