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List:       linux-rt
Subject:    Re: [Rtl] Re: RTLinux in a virtual machine on VMWare?
From:       Jim Wright <jwright () puaa ! net>
Date:       2004-10-12 22:58:24
Message-ID: Pine.LNX.4.58.0410121652590.10037 () kaunu ! jrw
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Without trust relationships, root is only a security threat to the local
machine.  So first off, don't trust the student's machines.  Next, the
"threat" to the local machine can be dealt with by erasing and re-imaging
the machines after every use.  Let the students do whatever they want
(experiment, fail, break, succeed, even learn) on the machines.  Then wipe
it clean and start over.  This also has the benefit of providing a known
good starting point for each exercise.  Work can be saved on a secured
server, perhaps running CVS.  Of course, this means you need to develop
a way to re-image the machines quickly and easily.

Jim


On Tue, 12 Oct 2004, Spiro Trikaliotis wrote:

> Hello,
> 
> karthik.bala <karthik.bala@samsung.com> wrote:
> 
> > Is Vmware the only idea available to avoid root access by students ??
> > Think over !!
> 
> Well, it is not the only way, but it seems, our only secure way. sudo
> and the like do not help, as the students need to be able to run insmod
> as root - which allows them to get a root shell very easily (write a
> module which starts a shell)!
> 
> Do you have any other suggestions?
> 
> Regards,
>    Spiro.
> 
> -- 
> Spiro R. Trikaliotis
> http://www.trikaliotis.net/
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