[muoncf]

A note to those using Tor, though. Getting your .torrent files and magnet links over Tor is fine, but please don't route your P2P traffic over Tor. Bittorrent wasn't designed for anonymity, so you'll be sending all sorts of data that makes it possible to identify you anyway, but, more importantly, it makes the Tor network slow as hell.

[yk]

To add some detail to your claim: Some clients use UDP and write the IP address into the body of the message.

https://blog.torproject.org/blog/bittorrent-over-tor-isnt-go...

[mike-cardwell]

Yeah, if you're going to use Bittorrent over Tor, you have to assume that the Bittorrent client will leak everything it knows about you, and therefore work to make sure it knows nothing about you.

If you're using a Linux box, you can use iptables to force all TCP traffic through Tor, dropping everything else. Then make sure the box doesn't know it's "public" IP address, only it's NAT'ed one. Even if it does a call out to something like http://whatismyip.com/ in order to determine it's external IP address, it wont get the real one because that traffic will have been forced out through Tor.

See: https://trac.torproject.org/projects/tor/wiki/doc/Transparen...

Speed wise, Tor appears to be slow, but that is just latency. For throughput it's fine. Especially if you're connecting to lots of different hosts over lots of different Tor circuits, as happens with Bittorrent.

But yes, the Tor Project doesn't want you to be using Bittorrent over Tor.

[IsTom]

Every packet passing to Tor is passed through a few hosts, this effectiviely multiplies the traffic, so with your throughput you'll be hogging everyone out.