Re: [tor-talk] videos in TBB: Progress and Remaining aggravations

2012-03-26 Thread bao song
A few months ago,  HTML5 was disabled by default, and Noscript blocked attempts 
to enable it.

Now, HTML5 is enabled by default (progress) but Noscript still tries to block 
all HTML5 videos, and must be manually disabled for those who want to see funny 
cats.

I'm not sure if there is any risk to HTML5, but, if not, perhaps Noscript 
options could be modified for the TBB to allow HTML5 videos by default?

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Re: [tor-talk] secure and simple network time (hack)

2012-03-26 Thread intrigeri
Hi,

Jacob Appelbaum wrote (20 Feb 2012 20:30:08 GMT) :
 For a while I've been interested in secure network time that would
 be useful for Tor users. Tor users generally need accuracy to the
 hour in the local system clock.

Thank you for tackling this problem.

 As a result, I've also written another tool, tlsdate[1], that
 I regularly use for setting my own clock.

What network fingerprint does tlsdate currently display if I run it in
the clear, without forwarding its traffic through Tor?

Cheers,
--
  intrigeri
  | GnuPG key @ https://gaffer.ptitcanardnoir.org/intrigeri/intrigeri.asc
  | OTR fingerprint @ https://gaffer.ptitcanardnoir.org/intrigeri/otr.asc
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Re: [tor-talk] Designing a secure Tor box for safe web browsing?

2012-03-26 Thread intrigeri
Hi,

Maxim Kammerer wrote (22 Mar 2012 14:07:25 GMT) :
 I implemented that approach once for the purpose of running unsafe
 browser (https://github.com/mkdesu/liberte/commit/0f0646e),
 executing an already-running image inside a nested QEMU. It's a nice
 exercise, but too demanding on resources,

I'm curious about what resources proved to be limiting during your
experiments, and what too demanding means in your usecases.
Knowing these figures would make this report useful, to a degree, to
draw conclusions for other usecases.

 and ultimately pointless (personal opinion).

I would be happy to learn why you consider this is pointless.
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Re: [tor-talk] Designing a secure Tor box for safe web browsing?

2012-03-26 Thread proper
 I'm curious about what resources
 proved to be limiting during your
 experiments, and what too demanding
 means in your usecases.
 Knowing these figures would make this report useful,
 to a degree, to
 draw conclusions for other usecases.

Quoted from http://dee.su/liberte
Moreover, some concepts that are only theoretically considered in Tails, such 
as virtualization of applications, had been already implemented in Liberté 
Linux in the past, but were ultimately rejected — the Inception mechanism of 
self-virtualization was found to be too resource-demanding of the typical 
hardware available to users.

Let's see if he wants to expand that.

  and ultimately
 pointless (personal opinion).

 I would be happy to learn why you consider
 this is pointless.

Question still open.

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Re: [tor-talk] How can the video play in TBB without plagins?

2012-03-26 Thread Joe Btfsplk

On 3/25/2012 10:56 PM, Andrew Lewman wrote:

On Sun, 25 Mar 2012 20:37:55 -0500
Joe Btfsplkjoebtfs...@gmx.com  wrote:

Don't you have to opt in to the html5 videos (or technology), thus
meaning creating an acct on (youtube)?  Or has that changed?

No, you do not have to login to youtube, nor even visit their
youtube/html5 page to set the cookie. The current version of torbrowser
enables html5 video on youtube by default. Tails uses a greasemonkey
script to achieve the same goal.

There are many videos which are flash-only, mostly they seem to be the
videos with ads injected into the video stream. I have seen some html5
videos with advertising overlays, but the video plays fine in TBB and
Tails.
Thanks for all replies.  It doesn't change the (sort of) tongue in cheek 
comment about being a brilliant move on Google's part.  ESPECIALLY  in 
light of Google's new (non) privacy policy, where they can / will / 
intend to? track users across all their services.  In  of itself this 
isn't * solely * related to html5 content, but it's certainly a big draw 
to get users to set Google cookies.


My question to those more knowledgeable about these cookies that google 
sets,  their NEW privacy policy, is how it affects Tor users?  Among 
other issues, once Google sets a cookie, I don't believe there'd be any 
difference in Tor / non Tor users, how Google is able to track you 
across their different sites / domains.  The only diff is they'd not see 
your real IP address.


Since traffic analysis seems to be a huge issue for Tor / Tor users, 
how is being able to track Tor users across multiple sites not an 
issue?  Seems it'd be fairly easy to use this to identify individuals, 
if someone wanted to.  Unless using settings / addons to prevent it, 
they will have a lot of info about you 
http://www.google.com/policies/privacy/


Users really need to read the ENTIRE Google privacy policy.  If not 
taking steps to prevent (Google) from gaining details about your 
machine, etc., even if users delete a cookie once they leave youtube, 
etc., then go to another google site that requires cookies, couldn't 
they probably identify the same computer?  Many Tor users will forget to 
del cookies, since TBB default settings are to accept cookies.


The bigger issue is, today it's Google doing this, tomorrow... who knows?

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Re: [tor-talk] Designing a secure Tor box for safe web browsing?

2012-03-26 Thread Maxim Kammerer
On Mon, Mar 26, 2012 at 00:52, intrigeri intrig...@boum.org wrote:
 I'm curious about what resources proved to be limiting during your
 experiments, and what too demanding means in your usecases.

Well, Intel VT / AMD-V virtualization extensions are rarely available
on laptops, and without these extensions (accessible, e.g., via KVM),
running a virtualized instance is extremely slow (startup time is also
very high if only doing that for specific applications, even with
KVM). There are also RAM requirements — how much do you allocate? This
needs to be decided in advance, regardless of how much memory the user
needs for performing the task in the VM.

 I would be happy to learn why you consider this is pointless.

Relying on such (intrinsically complex) VM separation for security of
specific applications means that you don't trust your system to
perform basic tasks like user privileges separation (e.g., when unsafe
browser is run under dedicated user credentials). This is somewhat
contradictory. For tasks like abstracting network interfaces and other
hardware, the user can run everything in a VM by themselves — why
force it on everyone? For approaches like Qubes OS, see my comment
here: https://forum.dee.su/topic/gui-isolation.

-- 
Maxim Kammerer
Liberté Linux (discussion / support: http://dee.su/liberte-contribute)
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Re: [tor-talk] How can the video play in TBB without plagins?

2012-03-26 Thread Sebastian G. bastik.tor
Andrew Lewman, 26.03.2012 01:16:
 On Sun, 25 Mar 2012 19:14:54 +
 James Brown jbrownfi...@gmail.com wrote:
 
 How cat that nice video
 https://media.torproject.org/video/2009-install-and-use-tor-browser-bundle.ogv
 play in TBB when my plagin Shockware Flash is disable?
 
 We use ogg vorbis inside html5 video tags. See
 https://www.mozilla.org/en-US/firefox/video/ and
 https://en.wikipedia.org/wiki/HTML5_video
 
 If you haven't tried lately, a growing number of video sites support
 html5 video, such as youtube. Increasingly, this means you can watch
 your funny cat videos with TBB.
 

The windows version of TBB ships with NoScript which is set to allow
scripts globally, but

Forbid AUDIO/VIDEO
and
Apply these restrictions to whitelisted sites too
are both enabled.

This means one has to click the object (this time a video) and answer
the dialog of NoScript.

Regards,
bastik_tor
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Re: [tor-talk] How can the video play in TBB without plagins?

2012-03-26 Thread Seth David Schoen
Joe Btfsplk writes:

 Users really need to read the ENTIRE Google privacy policy.  If not
 taking steps to prevent (Google) from gaining details about your
 machine, etc., even if users delete a cookie once they leave
 youtube, etc., then go to another google site that requires cookies,
 couldn't they probably identify the same computer?  Many Tor users
 will forget to del cookies, since TBB default settings are to accept
 cookies.

TBB deletes cookies when you quit it, so it's hard for users to forget
to delete them.  It's true that Google can use cookies to track a
particular Tor user within a TBB session, including from one Google
site to another.  However, if you quit TBB and run it again another
time, there shouldn't be any information that enables Google to
recognize you from before.

TBB took some measures to respond to the Panopticlick research, so it's
probably not easy for Google or other sites to recognize your browser
by non-cookie means either.

-- 
Seth Schoen  sch...@eff.org
Senior Staff Technologist   https://www.eff.org/
Electronic Frontier Foundation  https://www.eff.org/join
454 Shotwell Street, San Francisco, CA  94110   +1 415 436 9333 x107
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Re: [tor-talk] How can the video play in TBB without plagins?

2012-03-26 Thread intrigeri
Sebastian G. bastik.tor wrote (26 Mar 2012 16:37:54 GMT) :
 The windows version of TBB ships with NoScript which is set to allow
 scripts globally, but

 Forbid AUDIO/VIDEO
 and
 Apply these restrictions to whitelisted sites too
 are both enabled.

 This means one has to click the object (this time a video) and answer
 the dialog of NoScript.

I think this may be what this ticket is about:
https://trac.torproject.org/projects/tor/ticket/5266

Regards,
--
  intrigeri
  | GnuPG key @ https://gaffer.ptitcanardnoir.org/intrigeri/intrigeri.asc
  | OTR fingerprint @ https://gaffer.ptitcanardnoir.org/intrigeri/otr.asc
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Re: [tor-talk] How can the video play in TBB without plagins?

2012-03-26 Thread Joe Btfsplk

On 3/26/2012 12:10 PM, Seth David Schoen wrote:
TBB deletes cookies when you quit it... It's true that Google can use 
cookies to track a particular Tor user within a TBB session, including 
from one Google site to another.
Thanks for the input.  My point exactly.  Most users aren't going to 
completely close TBB after visiting google sites.  I imagine even a very 
large % of Tor users, much less avg internet users, have ever read 
Google's new privacy policy, have any idea of their capability to track 
users, etc.  Your point is well taken, but I doubt a majority of TBB 
users will close the browser, after they leave a google site  make sure 
that all google cookies are deleted (ALL google pages  probably sites 
linked from google pages).


One could use some cookie mgr addon that allows for temporary cookies, 
that are deleted when a web PAGE is closed, but most won't do that either.
Of course, this may be the least of worries for users of TBB or any 
other anonymity software / methods.  I assume at this point, TBB devs 
aren't concerned about google (or any other) tracking cookies, or else 
TBB wouldn't come w/ cookies enabled by default.  I'm not sure why they 
wouldn't be concerned - maybe there's good reason.  I don't know the 
answer to that.

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