PRIVOXY Browser Security and Anonymity

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Subject Author Date
PRIVOXY Browser Security and Anonymity planet.doctor 03-02-2007
Posted by on March 2, 2007, 1:02 am
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There is an excellent web site: SHEILD'S UP!
https://www.grc.com/x/ne.dll?bh0bkyd2
which will try to find out out much as it can when your browser goes
to this address. It shows you all your available and knowable details,
which of helps if you trying to set up an anonymous proxy server to
hid behind.

I installed PRIVOXY on my Intel MiniMac running OS10.4.8, ad after
doing so, SHEILD'S UP! couldn't find a thing about me when I pointed
my browser to the above address, with PRIVOXY running. It could not
find my IP address, or anything else. Excellent I thought. PRIVOXY
must be working.

However, I then came across this site: http://locateip.co.uk/ which
instantly found and displayed my correct IP address, even though I was
hidding behing PRIVOXY. So I am not as anonymous as I thought.

Does anyone know why, even with PRIVOXY installed, my IP address can
still be found by this site?

Any suggestions for increasing my anonymity?


Posted by Todd H. on March 2, 2007, 1:51 am
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planet.doctor@inbox.com writes:

> There is an excellent web site: SHEILD'S UP!
https://www.grc.com/x/ne.dll?bh0bkyd2
> which will try to find out out much as it can when your browser goes
> to this address. It shows you all your available and knowable details,
> which of helps if you trying to set up an anonymous proxy server to
> hid behind.
>
> I installed PRIVOXY on my Intel MiniMac running OS10.4.8, ad after
> doing so, SHEILD'S UP! couldn't find a thing about me when I pointed
> my browser to the above address, with PRIVOXY running. It could not
> find my IP address, or anything else. Excellent I thought. PRIVOXY
> must be working.
>
> However, I then came across this site: http://locateip.co.uk/ which
> instantly found and displayed my correct IP address, even though I was
> hidding behing PRIVOXY. So I am not as anonymous as I thought.
>
> Does anyone know why, even with PRIVOXY installed, my IP address can
> still be found by this site?
>
> Any suggestions for increasing my anonymity?

Add Tor to Privoxy.



--
Todd H.
http://www.toddh.net/

Posted by Volker Birk on March 2, 2007, 2:08 am
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planet.doctor@inbox.com wrote:
> There is an excellent web site: SHEILD'S UP!
https://www.grc.com/x/ne.dll?bh0bkyd2

http://grcsucks.com

HTH, HAND,
VB.
--
"Pornography is an abstract phenomenon. It cannot exist without a medium
to propagate it, and it has very little (if anything at all) to do with sex."
Tina Lorenz
<https://events.congress.ccc.de/congress/2006/Fahrplan/events/1422.en.html>

Posted by on March 2, 2007, 4:07 pm
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Thanks for the Tor suggestion, toddh. Reading a little bit more about
TOR, and anonimity in general, it seems that personal IP data can be
obtained from you using your browsers ftp protocol. So your ftp must
be routed via Privoxy to prevent this. But I also read that this stops
you using ftp. Is that right?


Posted by Todd H. on March 2, 2007, 4:59 pm
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planet.doctor@inbox.com writes:

> Thanks for the Tor suggestion, toddh. Reading a little bit more about
> TOR, and anonimity in general, it seems that personal IP data can be
> obtained from you using your browsers ftp protocol. So your ftp must
> be routed via Privoxy to prevent this. But I also read that this stops
> you using ftp. Is that right?


I've not used tor for anything but http transport, so I don't know.
There are technical reasons with ftp using 2 ports and such that I
could believe that ftp just won't do its thing over tor, but I don't
know.

The one place that tor does leak info is that your DNS requests still
go out to your local DNS server. So if someone had control of the
local dns server, and knew your IP, they could get a list of sites
you had at least looked up to resolve, but they'd have no info on what
url's or info you accessed there.

Tor is a pretty big performance hit so it's hard to use for all your
browsing, but it's nice to have when you'd like to do things that you
don't want google analytics or whomever to add to their profile on
ya.


--
Todd H.
http://www.toddh.net/

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