So so so helpful, Collin! On Wed, Feb 10, 2016 at 1:58 PM, Collin Anderson <[email protected]> wrote: > > On Wed, Feb 10, 2016 at 11:09 AM, Joseph Lorenzo Hall <[email protected]> wrote: >> >> Do we have any indication as to how they are blocking (e.g., given Iran's >> past history, I'd tend to think it involves fingerprinting circumvention >> tech protocols). best, Joe > > > I don't believe its traffic classification on circumvention tools; the > proliferation of obfsproxy-style and meek transports beyond Tor seems to > made this more difficult. For the particular tools that I have checked, it > appeared to be enumeration of network entry points through the censors > running the tool or collecting aggregated network statistics from users, and > then blocking found addresses. In certain cases, this layer three blocking > and in others through in-line blocking on the application layer. In the > latter scenario, the intention seems though to simply block SSL connection > for addresses, and nothing more fine grain, e.g. whitelisting/blacklisting. > > Would be happy to test any tools, maybe FreeGate is next. > -- > Collin David Anderson > averysmallbird.com | @cda | Washington, D.C. > > -- > Liberationtech is public & archives are searchable on Google. Violations of > list guidelines will get you moderated: > https://mailman.stanford.edu/mailman/listinfo/liberationtech. Unsubscribe, > change to digest, or change password by emailing moderator at > [email protected].
-- Joseph Lorenzo Hall Chief Technologist, Center for Democracy & Technology [https://www.cdt.org] e: [email protected], p: 202.407.8825, pgp: https://josephhall.org/gpg-key Fingerprint: 3CA2 8D7B 9F6D DBD3 4B10 1607 5F86 6987 40A9 A871 CDT's annual dinner, Tech Prom, is April 6, 2016! https://cdt.org/annual-dinner -- Liberationtech is public & archives are searchable on Google. Violations of list guidelines will get you moderated: https://mailman.stanford.edu/mailman/listinfo/liberationtech. Unsubscribe, change to digest, or change password by emailing moderator at [email protected].
