[tor-relays] New obfsproxy transport: scramblesuit [bridge operators: please upgrade!]

[Matt]

On Mon, 10 Feb 2014 16:04:56 +0000
George Kadianakis <desnacked at riseup.net> wrote:

> Greetings,
> 
> a few days ago we integrated ScrambleSuit to obfsproxy. ScrambleSuit
> is a pluggable transport by Philipp Winter; you can find more about it
> at: http://www.cs.kau.se/philwint/scramblesuit/
> 
> If you are running a bridge, please consider upgrading your obfsproxy
> to the latest version (0.2.6) by using pip or fetching the latest git
> master.  Unfortunately, we don't have Linux packages yet, but we will
> hopefully have some soon. In the meanwhile, we would appreciate some
> testing :)
> 
> After you upgrade obfsproxy, please change your ServerTransportPlugin
> line from:
>      ServerTransportPlugin obfs2,obfs3 exec /usr/bin/obfsproxy
> managed to:
>      ServerTransportPlugin obfs3,scramblesuit exec /usr/bin/obfsproxy
> managed 
> 
> This will disable obfs2 [0] and enable scramblesuit.
> 
> It's also important to know that scramblesuit is a password-based
> pluggable transport, which means that each scramblesuit bridge has a
> password and if the user doesn't know the password he/she can't
> connect to the bridge. If you publishing your bridge to BridgeDB, Tor
> will automatically send the ScrambleSuit password to BridgeDB so that
> clients can get it. By default ScrambleSuit will generate a random
> password; if you want to specify your own password, you can use a
> torrc line like this:
>       ServerTransportOptions scramblesuit
> password=LLDNOWV7I4P6RKFJMDEMIY2GNU2IQISA
> 
> By the way, expect not to see any scramblesuit users in the
> beginning. After a few people have set up scramblesuit bridges, we
> will roll out a Tor Browser Bundle with scramblesuit enabled.
> 
> Feel free to ask any questions you have!
> 
> Thanks!
> 
> PS: If you are running a bridge without any pluggable transports,
>     please consider installing obfsproxy [1]. Normal bridges are not
>     hard to block these days and we are working on increasing the
>     number of obfuscated bridges out there.
> 
> [0]: https://trac.torproject.org/projects/tor/ticket/10314
> [1]: https://www.torproject.org/projects/obfsproxy.html.en
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I installed obfsproxy through pip. Running Tor 0.2.5.1, I'm seeing this
message:

[warn] Managed proxy at '/usr/local/bin/obfsproxy' failed the
configuration protocol and will be destroyed.

That doesn't sound too great. What does this message mean?