Penetration Testing mailing list archives

Re: Deep Freeze


From: Ben Koren <benkoren () gmail com>
Date: Sun, 12 Feb 2006 13:27:19 -0600

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As far as I have tested, there is no performance loss. Pretty much all I
did was compare timings with a simple stopwatch. It wasn't a very
high-tech operation, but suffice to say, I wouldn't worry about the
performance.

Neil wrote:
Any performance issues?

On 2/11/2006 12:54 AM, Ben Koren wrote:
Yes, I have had plenty of experience with Deep Freeze, myself. All
around, it is a very good program. But if you wish to hear about how
great program it is, go to their web site.

As far as the not-so-great things, I have 2 things:

I have broken the security of older versions of Deep Freeze. This is
simply done with any kind of boot disk that can write to an NTFS
filesystem. I believe they fixed that problem in the latest version, so
I wouldn't consider this an issue if you are purchasing the latest version.

The 2nd, more serious, problem that I am currently in the middle of is
it's dislike for a domain environment. When a computer is frozen and the
domain trust password for a computer is reset, it not allow domain users
to log in until the problem has been fixed. A temporary solution is to
re-add the computer to the domain, logging in as a local administrator.
By default in my domain, for example, the password has a maximum age of
30 days. For me, that means that I have to go every workstation that I
have Deep Freeze on and re-add it to the domain (at an interval of no
more than 30 days). The workaround that Faronics (Deep Freeze) is
currently providing me is a reconfiguration of the domain controller.
This reconfiguration makes it so that the password of the workstations
doesn't get reset for x amount of days, where they recommend x is
somewhere above a few thousand days. Obviously this is a huge security
problem.

I am currently (the last 3 months) in communication with Faronics
concerning this problem. As of now, the have not given me a solution. I
am not saying don't purchase it because I cannot say that you will have
this same problem, but I do recommend that you discuss the issue with a
representative from Faronics before you make a purchase.

If you are not in a domain environment, forget all of what I said and
buy it - works great for that!

Ben

Steve Brown wrote:
Hi all,
 
Has anyone had any experience with a product called "Deep Freeze"?
 
I'm looking at using it to secure some machines, but i was interested to
know if anyone knows anything about, or has broken, the security on it?
 
much appreciated
 
Steve

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