Re: Google language turns depending on tor node...

2010-06-19 Thread Andrew Lewman
On Sat, 19 Jun 2010 19:52:56 +0530
emigrant  wrote:

> when i give a keyword to search, in most cases, i get results in
> languages i cannot read.
> is there any way to keep it always to english?

There is a fine FAQ answer for this:

https://trac.torproject.org/projects/tor/wiki/TheOnionRouter/TorFAQ#WhydoesGoogleshowupinforeignlanguages


-- 
Andrew Lewman
The Tor Project
pgp 0x31B0974B

Website: https://www.torproject.org/
Blog: https://blog.torproject.org/
Identi.ca: torproject
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Re: Rogue exit nodes - checking?

2010-06-19 Thread slush
Hello,

yes, there is a way how to detect corrupted/malicious node. I wrote
Tor exit node scanner with some advanced techniques (for example
clustering or source tree analysis) as my thesis last year. During
debugging and testing I checked all exit nodes with many common pages
(google, few news pages etc) but did not found anything critical
(except bug #779 which is fixed now).

If there is a demand, I'm able to publish my scanner as hidden service
in some way (at this time, it does not have any WUI). Unfortunately I
cannot publish source codes because attackers can adapt own techniques
(though it would be very difficult).

My Tor scanner also consume many resources of Tor network because need
to download given link from all or almost all exit nodes.

Marek

On Sat, Jun 19, 2010 at 11:20 PM, Matthew  wrote:
> This is especially dangerous if you are using Yahoo Mail, because evenif you
> trust the person who sent you the document, your attachment will be
> downloaded in plaintext (via http, not https). This means that the exit node
> you use can replace or alter your document to unmask you (or worse, exploit
> your document reader and run arbitrary code).
>
>
> I am curious to know if there is a way of identifying "bad" exit nodes?  Do
> people who are more technical than me (not hard!) somehow search for exit
> nodes with interesting configurations?  Or, unless you use StrictExitNodes
> and are confident of the honesty of the operator, are you simply hoping the
> exit node owner is benign?
>
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Rogue exit nodes - checking?

2010-06-19 Thread Matthew
This is especially dangerous if you are using Yahoo Mail, because evenif 
you trust the person who sent you the document, your attachment will be 
downloaded in plaintext (via http, not https). This means that the exit 
node you use can replace or alter your document to unmask you (or worse, 
exploit your document reader and run arbitrary code).



I am curious to know if there is a way of identifying "bad" exit nodes?  
Do people who are more technical than me (not hard!) somehow search for 
exit nodes with interesting configurations?  Or, unless you use 
StrictExitNodes and are confident of the honesty of the operator, are 
you simply hoping the exit node owner is benign?


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Re: Google language turns depending on tor node...

2010-06-19 Thread Matthew
You could set "StrictExitNodes 1" in your .torrc file with a series of 
exit servers that are based in countries where English is the first 
language (USA, Canada, UK, Ireland, Australia, etc).   That way all 
results will be in English.


emigrant wrote:

when i give a keyword to search, in most cases, i get results in
languages i cannot read.
is there any way to keep it always to english?

thank you very much.

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Tor Extension possible for Safari, others ?

2010-06-19 Thread Dreamcat4
Hi,

With the recently released of Safari 5, its now possible to write
extensions in HTML / CSS. It would be nice to know whether the browser
API exposed by Apple is capable of allowing / exposing the Browser
requests to a Socks Proxy (for Tor). Ie like FoxyProxy, TorButton etc
does for Firefox. Similarly, it would be nice to know if Chrome or
other browsers may be capable of this?


Best regards

dreamcat4
dreamc...@gmail.com
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Re: Google language turns depending on tor node...

2010-06-19 Thread emigrant
On Sat, 2010-06-19 at 10:59 -0400, Aplin, Justin M wrote:
> On 6/19/2010 10:22 AM, emigrant wrote:
> > when i give a keyword to search, in most cases, i get results in
> > languages i cannot read.
> > is there any way to keep it always to english?
> >
> 
> There are many ways to do this listed in the FAQ. Please see:
> https://trac.torproject.org/projects/tor/wiki/TheOnionRouter/TorFAQ#WhydoesGoogleshowupinforeignlanguages
> 
> ~Justin Aplin
> 
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THANK YOU ALL FOR THE TIPS
:)

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Re: Google language turns depending on tor node...

2010-06-19 Thread st...@hispeed.ch
Le Sat, 19 Jun 2010 16:24:39 +0200,
"Runa A. Sandvik"  a écrit :

> On Sat, Jun 19, 2010 at 4:22 PM, emigrant
>  wrote:
> > when i give a keyword to search, in most cases, i get results in
> > languages i cannot read.
> > is there any way to keep it always to english?
> 
> Well, you could always go to google.co.uk.
> 

A solution are to use www.scoogle.org ( with ssl possible) and just
select the languages you want in scroogle site ;)

Best Regards

SwissTor
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Re: Google language turns depending on tor node...

2010-06-19 Thread Eugen Leitl
On Sat, Jun 19, 2010 at 07:52:56PM +0530, emigrant wrote:
> when i give a keyword to search, in most cases, i get results in
> languages i cannot read.
> is there any way to keep it always to english?
> 
> thank you very much.

Make http://google.com/ncr your home page.

-- 
Eugen* Leitl http://leitl.org";>leitl http://leitl.org
__
ICBM: 48.07100, 11.36820 http://www.ativel.com http://postbiota.org
8B29F6BE: 099D 78BA 2FD3 B014 B08A  7779 75B0 2443 8B29 F6BE
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Re: Google language turns depending on tor node...

2010-06-19 Thread Aplin, Justin M

On 6/19/2010 10:22 AM, emigrant wrote:

when i give a keyword to search, in most cases, i get results in
languages i cannot read.
is there any way to keep it always to english?
   


There are many ways to do this listed in the FAQ. Please see:
https://trac.torproject.org/projects/tor/wiki/TheOnionRouter/TorFAQ#WhydoesGoogleshowupinforeignlanguages

~Justin Aplin

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Re: Downloading attachments with Tor - is this secure?

2010-06-19 Thread Matthew
Thank you all for this advice - I'm pleased that my question was not so 
basic.


I was not using Torbutton.  However, I had previously used 
www.decloak.net and it could not get my real IP.


I tried www.decloak.net again and I am still anonymous.  The reasons are 
(even in the absence of Torbutton) because I have no plugins functioning 
(e.g. Flash is off).  Also, no Java (JavaScript is on).  When 
www.decloak.net asks me to download a Word document (although I am using 
OpenOffice under Ubuntu so not the "normal" Word) irrespective of 
whether I open the document or save it then open it, www.decloak.net 
cannot get my IP.  When I expand the little icon in OpenOffice Writer 
(which starts http://) the IP address is that of the Tor exit node (for 
testing I am using StrictExitNodes so I know what my Tor IP is).


However, I am going to start using Torbutton. 


Thanks again.

Aplin, Justin M wrote:

Yes, if you use Torbutton, the attachment itself will be downloaded
only via Tor.
   


I believe this is the short answer to your question, though everything 
else Mike said is good to keep in mind as well, especially in 
situations where paranoia is appropriate.



This is especially dangerous if you are using Yahoo Mail, because even
if you trust the person who sent you the document, your attachment
will be downloaded in plaintext (via http, not https).
   


Watch out for this. Yahoo's *login* page for webmail and other 
services may be HTTPS, but this reverts to plain HTTP once you're 
actually viewing your mail and downloading attachments. A simple 
solution for secure webmail at the moment is using Gmail and the new 
Firefox addon "HTTPS-Everywhere" available from 
https://www.eff.org/https-everywhere . This addon is *NOT* magic, as 
it only works with the particular list of websites available on its 
option page, but making sure "Google Services" is checked in it's 
options will allow all Gmail connections (including downloading 
attachments) to happen over HTTPS.


~Justin Aplin
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Re: Google language turns depending on tor node...

2010-06-19 Thread Gitano
On 2010-06-19 16:22, emigrant wrote:

> when i give a keyword to search, in most cases, i get results in
> languages i cannot read.
> is there any way to keep it always to english?

I prefer: https://ssl.scroogle.org/
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Re: Google language turns depending on tor node...

2010-06-19 Thread Runa A. Sandvik
On Sat, Jun 19, 2010 at 4:22 PM, emigrant  wrote:
> when i give a keyword to search, in most cases, i get results in
> languages i cannot read.
> is there any way to keep it always to english?

Well, you could always go to google.co.uk.

-- 
Runa A. Sandvik
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Google language turns depending on tor node...

2010-06-19 Thread emigrant
when i give a keyword to search, in most cases, i get results in
languages i cannot read.
is there any way to keep it always to english?

thank you very much.

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Re: Downloading attachments with Tor - is this secure?

2010-06-19 Thread Aplin, Justin M



Yes, if you use Torbutton, the attachment itself will be downloaded
only via Tor.
   


I believe this is the short answer to your question, though everything 
else Mike said is good to keep in mind as well, especially in situations 
where paranoia is appropriate.



This is especially dangerous if you are using Yahoo Mail, because even
if you trust the person who sent you the document, your attachment
will be downloaded in plaintext (via http, not https).
   


Watch out for this. Yahoo's *login* page for webmail and other services 
may be HTTPS, but this reverts to plain HTTP once you're actually 
viewing your mail and downloading attachments. A simple solution for 
secure webmail at the moment is using Gmail and the new Firefox addon 
"HTTPS-Everywhere" available from https://www.eff.org/https-everywhere . 
This addon is *NOT* magic, as it only works with the particular list of 
websites available on its option page, but making sure "Google Services" 
is checked in it's options will allow all Gmail connections (including 
downloading attachments) to happen over HTTPS.


~Justin Aplin
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Tor-ramdisk 20100618 released

2010-06-19 Thread Anthony G. Basile
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA1


Hi everyone

I want to announce to the list that a new release of tor-ramdisk is out.
Tor-ramdisk is an i686, x86_64 or MIPS uClibc-based micro Linux
distribution whose only purpose is to host a Tor server in an
environment that maximizes security and privacy. Security is enhenced by
hardening the kernel and binaries, and privacy is enhanced by forcing
logging to be off at all levels so that even the Tor operator only has
access to minimal information. Finally, since everything runs in
ephemeral memory, no information survives a reboot, except for the Tor
configuration file and the private RSA key, which may be
exported/imported by FTP.

Changelog:

Tor was upgraded to 0.2.26, busybox to 1.16.1 and the kernel to
2.6.32.15 plus Gentoo's hardened-patches-2.6.32-12 for the i686 and
x86_64 ports.



i686:
Homepage: http://opensource.dyc.edu/tor-ramdisk
Download: http://opensource.dyc.edu/tor-ramdisk-downloads

x86_64:
Homepage: http://opensource.dyc.edu/tor-x86_64-ramdisk
Download: http://opensource.dyc.edu/tor-x86_64-ramdisk-downloads

MIPS:
Homepage: http://opensource.dyc.edu/tor-mips-ramdisk
Download: http://opensource.dyc.edu/tor-mips-ramdisk-downloads


- -- 
Anthony G. Basile, Ph. D.
Chair of Information Technology
D'Youville College
Buffalo, NY 14201
(716) 829-8197
-BEGIN PGP SIGNATURE-
Version: GnuPG v1.4.10 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/

iEYEARECAAYFAkwcqGgACgkQl5yvQNBFVTXhiACfR1KFNS1bh842SRtWSgeAwzUQ
qqYAnRPCeooAs4TIQ1pJnqLrrLmgBTEn
=hiBN
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Re: Downloading attachments with Tor - is this secure?

2010-06-19 Thread Mike Perry
Thus spake Matthew (pump...@cotse.net):

> When you are go into for example Yahoo webmail (without Tor) and 
> download an attachment (say a Word document or a photo) then your 
> browser asks you where on your hard drive you wish to save that 
> attachment. 
> 
> Then do the same thing using Tor (and Polipo).
> 
> I assume the attachment downloads from Yahoo Mail (or whatever) through 
> the three Tor nodes before being unencrypted at the final node and then 
> is downloaded to my computer.   In other words: the attachment (or for 
> that matter any file downloaded in the same way) is never downloaded 
> "outside" the Tor system - that is directly from the website to me 
> bypassing the Tor nodes?

Yes, if you use Torbutton, the attachment itself will be downloaded
only via Tor.

If you do not use Torbutton, your browser may autolaunch a plugin or
helper application to download the attachment and display it, which
may *not* happen via Tor. See
https://www.torproject.org/torbutton/design/#SingleStateTesting for
example exploits against non-Torbutton users.

Also, when you open your attachment after downloading it (either via
Tor or not), the program that opens it may be induced into making a
network connection outside of Tor. For example, .doc files, .pdf
files, .torrent files, and many many others can reference images,
urls, IP addresses, and other content from the Internet, which causes
the application that opened them to connect to a server outside of
Tor.

This is especially dangerous if you are using Yahoo Mail, because even
if you trust the person who sent you the document, your attachment
will be downloaded in plaintext (via http, not https). This means that
the exit node you use can replace or alter your document to unmask
you (or worse, exploit your document reader and run arbitrary code).


If you need to view these documents in a safe way, your best bet is to
use VirtualBox or some other virtualization software to run a VM that
you can disconnect from the network while you view the file, and roll
back to a safe snapshot after you have viewed the file.


Torbutton has a warning to attempt to explain all of this when you
download documents handled by external applications, but it is a lot
to get across in such a small amount of space.


-- 
Mike Perry
Mad Computer Scientist
fscked.org evil labs


pgp1RM2E0FR8T.pgp
Description: PGP signature


Re: Downloading attachments with Tor - is this secure?

2010-06-19 Thread andrew
On Sat, Jun 19, 2010 at 08:22:50AM +0100, pump...@cotse.net wrote 2.9K bytes in 
70 lines about:
> I assume the attachment downloads from Yahoo Mail (or whatever) through  
> the three Tor nodes before being unencrypted at the final node and then  
> is downloaded to my computer.   In other words: the attachment (or for  
> that matter any file downloaded in the same way) is never downloaded  
> "outside" the Tor system - that is directly from the website to me  
> bypassing the Tor nodes?

If your browser is properly configured to use Tor, then yes the
attachments should download via Tor.  Otherwise, that would be one
massive leak.

-- 
Andrew Lewman
The Tor Project
pgp 0x31B0974B

Website: https://www.torproject.org/
Blog: https://blog.torproject.org/
Identi.ca: torproject
Skype:  lewmanator
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Re: Downloading attachments with Tor - is this secure?

2010-06-19 Thread Matthew

Hi,

I think my question was so basic that I explained it badly.  I had seen
the page Justin suggested previously but it did not answer my simple
question.

Let me try again.

When you are go into for example Yahoo webmail (without Tor) and
download an attachment (say a Word document or a photo) then your
browser asks you where on your hard drive you wish to save that
attachment.

Then do the same thing using Tor (and Polipo).

I assume the attachment downloads from Yahoo Mail (or whatever) through
the three Tor nodes before being unencrypted at the final node and then
is downloaded to my computer.   In other words: the attachment (or for
that matter any file downloaded in the same way) is never downloaded
"outside" the Tor system - that is directly from the website to me
bypassing the Tor nodes?

Basic I know!

Thanks!



Aplin, Justin M wrote:

On 6/18/2010 3:06 AM, Matthew wrote:

Apologies in advance for the basic-ness of this question.   I cannot
find the answer with Google or in the Tor documentation.


I believe the answer you're looking for is #4 here: 
https://www.torproject.org/download.html.en#Warning



In these cases, how is the file downloaded?  Does the download happen
through HTTP/S?  If I am using Polipo and Tor then I assume the file is
downloaded as HTTP/S and goes through the Tor nodes like any "normal"
HTTP/S traffic.


This depends on where you're downloading from. Tor encrypts everything 
between you, the clients in your circuit, and the exit node. However, 
when traffic enters or leaves the exit node, it is *exactly* as if the 
exit node were visiting that website for itself. So, if you are 
downloading over standard HTTP, *nothing between the website and the 
exit node will be encrypted*. This usually isn't a terrible problem 
with downloads that don't contain any personal information that leads 
back to you, as it would be extremely difficult to follow the 
encrypted data over several hops through the network.


*However*, as the documentation says repeatedly, use HTTPS wherever 
possible, *especially* when communicating sensitive information that 
could lead back to you. This way, the traffic between the exit node 
and website is encrypted, and doubly so between you and the exit node. 
Much less will be gained by examining the traffic coming to/from the 
exit. Hope that answers your questions.


(Side Note: the above does not pertain to .onion websites or other 
hidden services, which are contained completely within the network.)


~Justin Aplin

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Re: Downloading attachments with Tor - is this secure?

2010-06-19 Thread Matthew

Hi,

I think my question was so basic that I explained it badly.  I had seen 
the page Justin suggested previously but it did not answer my simple 
question.


Let me try again.

When you are go into for example Yahoo webmail (without Tor) and 
download an attachment (say a Word document or a photo) then your 
browser asks you where on your hard drive you wish to save that 
attachment. 


Then do the same thing using Tor (and Polipo).

I assume the attachment downloads from Yahoo Mail (or whatever) through 
the three Tor nodes before being unencrypted at the final node and then 
is downloaded to my computer.   In other words: the attachment (or for 
that matter any file downloaded in the same way) is never downloaded 
"outside" the Tor system - that is directly from the website to me 
bypassing the Tor nodes?


Basic I know!

Thanks!



Aplin, Justin M wrote:

On 6/18/2010 3:06 AM, Matthew wrote:

Apologies in advance for the basic-ness of this question.   I cannot
find the answer with Google or in the Tor documentation.


I believe the answer you're looking for is #4 here: 
https://www.torproject.org/download.html.en#Warning



In these cases, how is the file downloaded?  Does the download happen
through HTTP/S?  If I am using Polipo and Tor then I assume the file is
downloaded as HTTP/S and goes through the Tor nodes like any "normal"
HTTP/S traffic.


This depends on where you're downloading from. Tor encrypts everything 
between you, the clients in your circuit, and the exit node. However, 
when traffic enters or leaves the exit node, it is *exactly* as if the 
exit node were visiting that website for itself. So, if you are 
downloading over standard HTTP, *nothing between the website and the 
exit node will be encrypted*. This usually isn't a terrible problem 
with downloads that don't contain any personal information that leads 
back to you, as it would be extremely difficult to follow the 
encrypted data over several hops through the network.


*However*, as the documentation says repeatedly, use HTTPS wherever 
possible, *especially* when communicating sensitive information that 
could lead back to you. This way, the traffic between the exit node 
and website is encrypted, and doubly so between you and the exit node. 
Much less will be gained by examining the traffic coming to/from the 
exit. Hope that answers your questions.


(Side Note: the above does not pertain to .onion websites or other 
hidden services, which are contained completely within the network.)


~Justin Aplin

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