> From: Matt Finnigan [mailto:[email protected]]
> 
>  That's not a very compelling argument. I've been at firms that deployed VM-
> based security devices and passed audits.

Well, like I said, I do it myself too.  But from a security standpoint, if you 
had the option of running a firewall on dedicated hardware as opposed to VM, 
the hypervisor and other guests on the same hardware can only introduce 
possible attack vectors.  Not reduce them.  

I know I've certainly seen situations where memory of one VM creeped into 
another VM, and stuff like that.  So there *are* bugs that are potentially 
exploitable.  Plus, no sane person could make a blanket statement that 
hypervisors are bug-free and un-exploitable.  But if you're comfortable with 
the stability of any other VM running on that hypervisor, there's a good chance 
you'll be comfortable also, with running the firewall in there.  I know, for 
most cases, I am comfortable with that.
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