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Subject: Re: [freenet-chat] TorrentFreak: Comcast/Sandvine block bittorrent seeding Date: Friday 07 September 2007 15:26 From: Florent Daignière <[EMAIL PROTECTED]> To: Matthew Toseland <[EMAIL PROTECTED]> * Matthew Toseland <[EMAIL PROTECTED]> [2007-09-07 15:22:06]: > On Friday 07 September 2007 15:13, you wrote: > > * Matthew Toseland <[EMAIL PROTECTED]> [2007-09-07 13:49:26]: > > > > > Seems to be on a traffic analysis level as it works on encrypted > bittorrent - > > > I wonder if this would block Freenet? > > > > > > > http://torrentfreak.com/comcast-throttles-bittorrent-traffic-seeding-impossible/ > > > > http://www.dslreports.com/forum/r18323368-Comcast-is-using-Sandvine-to-manage-P2P-Connections > > > > > > Thanks to whoever originally sent me this URL! > > > > Nothing new as far as I can see ... killing TCP sessions sending out > > RSTs is what China has been doing for years! > > The means of killing them isn't the interesting part. It's the means of > detecting them that's of interest. As far as I know only "transport" is cyphered using RC4 ... access to the tracker isn't (unless ssl is involved)... by the way preventing seeding when transfert is over is trivial ... flow analysis ... when you don't download, prevent "uploading". Detect that it switches from a "symmetrical" pattern to an asymetrical one -------------------------------------------------------
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