Re: Converting an external hard drive enclosure into a write blocker?

A*nix read only mount would be my option of choice, but for windows, I 
hesitatingly ask could you not modify an IDE cable to make any connected 
drive 'read-only' (might require a resistor - not sure if you can just 
clip a wire? - maybe some one with better EE skills could answer that?)

Stefan Kelm wrote:

> > you can mount the storage as read-only - any unix filesystem will
> > support read-only mount, and provided your root account isnt
> > compromised, no one can remount it as write. Root cant write to
> > read-only mounted filesystems without remount either.
> >
> > mount -r /dev/da2 /readonly in BSD land..
> >    
>
> Beware, however, that on journaling file systems such as
> ReiserFS or EXT3 you might incidentially change the file
> system although it is mounted read-only:
>
> http://www.mail-archive.com/reiserfs-list@namesys.com/msg20263.html
>
> Cheers,
>
>         Stefan.
>
> --------------------------------------------------------
> Stefan Kelm
> Security Consultant
>
> Secorvo Security Consulting GmbH
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>  

--

Terry Roebuck
Dept. of Computer Science
http://www.cs.usask.ca/people/faculty.shtml
University of Saskatchewan
306 966 2532 (office)
306 966 4884 (dept office)
terry.roebuck@usask.ca