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EFF Releases Tool For Testing ISP Interference
Placid notes that the EFF has announced Switzerland, a tool for testing if your ISP is interfering with your Net connection (e.g. by resetting BitTorrent transfers). It's command-line only at this point. Of course the tool is FOSS, and you can contribute to it via its SourceForge project. From the announcement: "Developed by the Electronic Frontier Foundation, Switzerland is an open source software tool for testing the integrity of data communications over networks, ISPs, and firewalls. It will spot IP packets which are forged or modified between clients, inform you, and give you copies of the modified packets."
For the lazy: https://sourceforge.net/project/showfiles.php?group_id=233013
Yeah, all tools that do tcpdump/Wireshark-style packet inspection require root (you don't want normal user programs sniffing everything). It's true that it's alpha quality code that does TCP communications, so it's a good idea to not leave it running all the time, and/or wait until a beta version has been released.
A bigger issue is that some of your sniffed packets are sent in the clear to EFF, so 1) it's possible that a third party could sniff those few packets (but it's only a handful of packets, but it could still cause problems, and 2) if you use EFF's server, you have to trust EFF with the handful of sniffed packets you send them (but you can run your own server). It's too complicated to summarize in a few sentences, see the README.txt in the package.
They do say they'll fix the issue that third parties could sniff your packets though (by doing the obvious thing and encrypting them between endpoints), so again, waiting for a later version might be a good idea.