
<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div><br></div><div>On 22 Jun 2018, at 17:45, Arturo Filastò <<a href="mailto:art@torproject.org">art@torproject.org</a>> wrote:<br><br></div><blockquote type="cite"><div><span>On 21 June 2018 at 20:11:45, Roger Dingledine (<a href="mailto:arma@mit.edu">arma@mit.edu</a>) wrote:</span><br><blockquote type="cite"><span>I've been working with a person in #tor for the past few days, to</span><br></blockquote><blockquote type="cite"><span>try various configurations. My current best guess is that cantv is</span><br></blockquote><blockquote type="cite"><span>blocking by IP address only, and not doing DPI. It is blocking many of</span><br></blockquote><blockquote type="cite"><span>the public relay IP addresses, and it is blocking the default (built</span><br></blockquote><blockquote type="cite"><span>in to Tor Browser) obfs4 bridges. But obfs4 bridges from bridgedb work,</span><br></blockquote><blockquote type="cite"><span>and also vanilla bridges from bridgedb work.</span><br></blockquote><blockquote type="cite"><span></span><br></blockquote><blockquote type="cite"><span>That means it would be worthwhile for the OONI folks to do TCP</span><br></blockquote><blockquote type="cite"><span>reachability checks of all of the IP:ports for the Tor fallbackdir list.</span><br></blockquote><blockquote type="cite"><span> </span><br></blockquote><span></span><br><span>We currently test the set of default dir auths, but I don’t think we test the fallbackdir list.</span><br></div></blockquote><div><br></div><div>Here's the ticket:</div><div><a href="https://github.com/OpenObservatory/ooni-resources/issues/11">https://github.com/OpenObservatory/ooni-resources/issues/11</a></div><br><blockquote type="cite"><div><span>Here is the list of Tor related addresses we currently check for:</span><br><span></span><br><span><a href="https://github.com/OpenObservatory/ooni-resources/blob/master/bridge_reachability/tor-bridges-ip-port.csv">https://github.com/OpenObservatory/ooni-resources/blob/master/bridge_reachability/tor-bridges-ip-port.csv</a></span><br><span></span><br><span>A pull request with the fallback dirs (or even just a email diff) would be gladly merged!</span><br></div></blockquote><br><div>If you like working with text files, here is the current list of fallbacks:</div><div><a href="https://gitweb.torproject.org/tor.git/tree/src/or/fallback_dirs.inc">https://gitweb.torproject.org/tor.git/tree/src/or/fallback_dirs.inc</a></div><div><br></div><div>If you like python, here is the stem API for the fallback list:</div><div><a href="https://stem.torproject.org/api/directory.html#stem.directory.Fallback">https://stem.torproject.org/api/directory.html#stem.directory.Fallback</a></div><div><br></div><div>T</div></body></html>