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Old Jan 3, 2006 | 10:01 PM
  #51  
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[QUOTE=no_really,Jan 3 2006, 10:54 PM] anything that prevents the problem from occurring could be considered a "solution."
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Old Jan 4, 2006 | 05:17 AM
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That wouldn't be the case if they were using a hyper-threading processor
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Old Jan 4, 2006 | 05:21 AM
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Originally Posted by PeaceLove&S2K,Jan 3 2006, 10:40 PM
So... your posts more or less made sense up till here (or at least up until this one, I couldn't outright say they were baseless, not being too familiar with DEP etc).

But how would you suggest configuring such a firewall? You'd have to write a firewall that understand the HTTP protocol, and knows to block when your machine requests a WMF file. Then of course, someone could make you download via FTP, so your firewall would need to understand that too.

But what if it comes as an e-mail attachment?

Is your firewall supposed to inspect every byte in every packet that comes into your computer, searching for what resembles a WMF file header?

I just can't see such a solution working.

And in all honesty, while I'm not sure about the DEP solution, I'm not even sure if that'll work. I haven't seen any information that suggests that this is a buffer overrun type problem yet. Did you try enabling DEP and clicking on Jason's link btw?
Actually it's quite easy. However just as jason said it's not a fix just a temporary bandaid. DEP works with hardware, You can google it now and you'll get all sorts of information about it.
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Old Jan 4, 2006 | 05:45 AM
  #54  
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Originally Posted by exceltoexcel,Jan 4 2006, 06:17 AM
That wouldn't be the case if they were using a hyper-threading processor
Now to be more precise, and in case anyone else is following, the relevant technology is the No execute bit. Which was available first on AMD 64. It came out for AMD in Q3 2003 and for Intel(consumer level) in Q3 2004.

I am definitely not willing to say hardware needs to be < 2.5 years old to not be considered obsolete for most desktop use(I use a MUCH older system at home with no problems).
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Old Jan 4, 2006 | 05:59 AM
  #55  
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Originally Posted by exceltoexcel,Jan 4 2006, 06:21 AM
Actually it's quite easy.
Have you heard of anonymizer? It encrypts all your HTTP so you can browse pr0n at work and not get caught. If the firewall allowed that to pass through(some IT departments do block it), there's not much opportunity to filter out .wmf or any other kinds of files. You could catch ALMOST everything but there are still some risks.

Another approach is to only allow you to visit a list of approved sites or restrict access to some sites. I was with a stock trading firm that did it the 2nd way. You couldn't even go to yahoo mail or gmail, etc etc.
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Old Jan 4, 2006 | 06:12 AM
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You have the mind of a criminal Yeah you're correct. Didn't think of that
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Old Jan 4, 2006 | 11:18 AM
  #57  
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Originally Posted by jasonw,Jan 4 2006, 12:46 AM
It is possible for a firewall to understand HTTP, FTP(This is actually very useful), SMTP, etc, etc. It just takes more processing power. Then again, the data may be encrypted...

I would not call this a solution though. Only a workaround like the steps I posted for disabling the DLL. You are sacrificing part of the product's functionality. It would be like Honda saying not to rev the S2000 > 6,000 rpms to prevent a scorched #1 cylinder. Sure, it may prevent the problem. But that would also be a workaround and not a solution. A solution lets you use the product as it is intended while fixing the defect.
I know it's possible, but like you said it'll be more processing power. And quite frankly, I'm not sure if that many personal firewall software out there does this.

I use iptables, which I'm pretty sure allows me to do pretty much anything. And I know I sure as heck am not going to spend any time trying to figure out how to modify my firewall rules to try and detect incoming WMF files.
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Old Jan 4, 2006 | 11:24 AM
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Originally Posted by PeaceLove&S2K,Jan 4 2006, 12:18 PM
I use iptables, which I'm pretty sure allows me to do pretty much anything.
I'm actually too lazy to do that at home. And just let my netgear take care of it.
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Old Jan 4, 2006 | 04:57 PM
  #59  
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Originally Posted by exceltoexcel,Dec 30 2005, 06:44 PM
Funny how people don't know there asses from the preverbal hole in the ground.
For someone so quick to point out mistakes, you sure make some of your own.

There - I see trees over there.

They're - They're running too quickly.

Their - Funny how people don't know their asses from the proverbial...

Preverbal = not yet containing the ability to speak.

Proverbial = of, or pertaining to, a proberb.

It's happened to me, but it's something everyone should know.
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Old Jan 4, 2006 | 07:32 PM
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Thank's next time I'll make sure I footnote as well.

From my sig

Stolen from Vader because it applys to me.

* Disclaimer: All posts by this user will be filled with spelling and grammar mistakes. I am too lazy to spell check, proofread and can not look at the screen and type at the same time. Read at your own risk.

**Disclaimer II: Readers of posts on the internet may read a condescending tone that was unintended by the author and have hurt feelings when no malice exists. Author will try very hard in the future to make sure any intended condescension and malice are therefore painfully obvious. Please reread above post inserting soft soothing voice before becoming offended.
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