Re: unintended?

2008-11-17 Thread bmanning
On Fri, Nov 14, 2008 at 02:29:24PM -0700, Chad Perrin wrote:
 On Fri, Nov 14, 2008 at 01:26:29PM +, [EMAIL PROTECTED] wrote:
  (snicker)  from the local firefox
  
  
  en-us.add-ons.mozilla.com:443 uses an invalid security certificate.
  
  The certificate is not trusted because the issuer certificate is not 
  trusted.
  
  (Error code: sec_error_untrusted_issuer)
 
 What does Perspectives have to say?
 
 What installation of Firefox did you use?
 
 I don't have that problem when I visit:
   https://addons.mozilla.org/en-US/firefox/
 
 Do you perhaps have some kind of malicious redirection going on there?
 
 -- 
 Chad Perrin [ content licensed PDL: http://pdl.apotheon.org ]


perspectives is not installed.  I've never taken the default and
added a cert that was not in the firefox trusted list... (at least on
a permanent basis)


Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.4; en-US; rv:1.9.0.2) 
Gecko/2008091618 Firefox/3.0.2

and yes, a redirect might be in play - except this happens w/ multiple, 
different caches
(fm the house, work, panera, starbucks and even the cows end)

--bill

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RE: unintended?

2008-11-17 Thread ian . farquhar
[Moderator's note: Top posting is considered untasteful. --Perry]

It doesn't need to be malicious.  It depends on the situation.

For example, lots of corporations do SSL session inspection using
products like Bluecoat.  The Bluecoat does a MiTM attack to expose the
plaintext for analysis, and expects that corporate users trust the
certificate it provides (and have pushed it out to all corporate
browsers).  If you've just loaded Firefox, it won't have that trusted
cert loaded by default, and you'll see exactly the below.

Ian. 

-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Chad Perrin
Sent: Saturday, November 15, 2008 8:29 AM
To: cryptography@metzdowd.com
Subject: Re: unintended?

On Fri, Nov 14, 2008 at 01:26:29PM +, [EMAIL PROTECTED]
wrote:
 (snicker)  from the local firefox
 
 
 en-us.add-ons.mozilla.com:443 uses an invalid security certificate.
 
 The certificate is not trusted because the issuer certificate is not
trusted.
 
 (Error code: sec_error_untrusted_issuer)

What does Perspectives have to say?

What installation of Firefox did you use?

I don't have that problem when I visit:
  https://addons.mozilla.org/en-US/firefox/

Do you perhaps have some kind of malicious redirection going on there?

-- 
Chad Perrin [ content licensed PDL: http://pdl.apotheon.org ]
John Kenneth Galbraith: If all else fails, immortality can always be
assured through spectacular error.

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Re: unintended?

2008-11-14 Thread Chad Perrin
On Fri, Nov 14, 2008 at 01:26:29PM +, [EMAIL PROTECTED] wrote:
 (snicker)  from the local firefox
 
 
 en-us.add-ons.mozilla.com:443 uses an invalid security certificate.
 
 The certificate is not trusted because the issuer certificate is not trusted.
 
 (Error code: sec_error_untrusted_issuer)

What does Perspectives have to say?

What installation of Firefox did you use?

I don't have that problem when I visit:
  https://addons.mozilla.org/en-US/firefox/

Do you perhaps have some kind of malicious redirection going on there?

-- 
Chad Perrin [ content licensed PDL: http://pdl.apotheon.org ]
John Kenneth Galbraith: If all else fails, immortality can always be
assured through spectacular error.


pgpmgpO99DbkE.pgp
Description: PGP signature


Re: unintended consequences?

2007-08-09 Thread John Levine
 Does that mean that the new fiber is less tappable?

Somehow, I suspect that Corning and the relevant authorities have been
in touch to work out any problems.

Corning is a politically very well connected company.  Amory Houghton,
a member of the family that has controlled the company since its
founding in 1851, was company CEO from 1965-84, and was then the
member of Congress from my district from 1986-2005.  His father was
CEO and later ambassador to France.  His grandfather was CEO and later
member of Congress and then ambassador to first Germany and later
Britain.  You get the idea.

R's,
John


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Re: unintended consequences?

2007-08-08 Thread Ed Gerck
Steven M. Bellovin wrote:
 Does that mean that the new fiber is less tappable?

No change, notwithstanding anecdotal references on fiber bending
as used for tapping.

Tapping a fiber can be done without much notice by matching the
index of refraction outside the outer fiber layer, after abrasion
and etching to reach that layer. There is no need for bending,
which might not be physically possible (eg, in a thick cable bundle),
would increase propagation losses beyond that caused by the tapped
signal power itself, and might create detectable backward
propagating waves (BPWs are monitored to detect fiber breach).

Low-loss taps are essential. A tap must extract a portion of
the through-signal. This, however, should not have the effect of
significantly reducing the level of the remaining signal. For
example, if one-quarter of the incident signal is extracted, then
there is a 1.25 db loss in the remaining through-signal, which
can easily be detected.

Cheers,
Ed Gerck

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