[OTR-users] QQ is blocking OTR

[smoothambiguity at aol.com]

 Come'on my dude, of course if anybody's snarfing traffic and/or preventing anonymity it's China with their Deep Packet Inspecting Routers and what not.? I'm told by a deep source that there is a way to integrate TOR, OTR, QQ and some other application which tunnels IP-through-DNS but since this isn't precisely my cup of tea I don't know much more than that.? I think I recall them saying that this assumes a colluding server somewhere outside of the firewall, but I don't really know what I'm talking about. 

Shit, speaking of something related, I think I saw some academic paper by some stuffed shirt recently talking about something related to this.? I wonder if I can find it...


 


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-----Original Message-----
From: Ananda Samaddar <ananda.samaddar at gmx.co.uk>
To: otr-users at lists.cypherpunks.ca
Sent: Sat, 18 Oct 2008 4:35 pm
Subject: Re: [OTR-users] QQ is blocking OTR











> 
> It might be worth someone else testing this to make sure it's
> reproducible and not some quirk with my systems.
> 
> For my test I used two different QQ ids on two different PCs.  One a
> Linux machine using Pidgin 2.5.0 + OTR 3.2.0 and the other a Windows
> machine using Pidgin 2.5.1 + OTR 3.2.0.  It's worth noting that in
> order to get QQ working properly in Pidgin for Windows you need to
> uninstall the include gtk+ runtime and use a different version as
> recommended in this bug report:
> 
> http://developer.pidgin.im/ticket/6900
> 
> You can get a QQ id here:
> 
> http://signup.qq.com/
> 
> If anyone wants to test this with me, e-mail me off list.  My QQ id
> is: 858394729.  I certainly wouldn't recommend using the official QQ
> software as it's infested with adware / spyware.
> 

A user has e-mailed me off list to confirm he can reproduce my results
w.r.t the strings ?, ?O, ?OT and ?OTR.  This was using Adium 1.3.2 and
Pidgin on Linux with OTR 3.1.0 on either end.  As I've stated before
there are issue with Pidgin + QQ on Windows so it would be helpful if
someone with an up to date Pidgin + OTR on Linux could contact me to
see if the results are replicated on Linux to Linux Pidgin clients.
This could hopefully rule out a buggy QQ implementation in libpurple.

As an aside, I entered the following terms and they were sent fine over
the network even though reverse dns shows the QQ server I'm connected
to is in China:

Tibet
Taiwan
Falun Gong
Democracy
Tiananmen Square

So if QQ are censoring they must be censoring in Mandarin not English,
OTR strings aside.

The ?OTR string use in OTR is definitely its biggest weakness.  We
currently have to rely on the goodwill of Microsoft / Yahoo / AOL /
Google / Your Jabber admin not to block OTR.  A weak point indeed.
Other that OTR is probably one of the most useful privacy tools I've
used (and continue to use)

Ananda



 





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