[AusNOG] Preparing 100s of routers for resale

[Jason Leschnik]

Do they have SSH?
Do they have a similar auth config user/password?

Thanks,
Jason.

On Thu, Apr 12, 2012 at 7:51 PM, Karl Auer <kauer at biplane.com.au> wrote:
> On Thu, 2012-04-12 at 09:12 +0100, Tom Storey wrote:
>> Also make sure to check flash: nvram: et al to make sure there arent
>> "backup" copies of configs floating around.
>
> When one erases flash/nvram in a Cisco router, or just deletes files off
> it, is the data really gone? I have recovered allegedly deleted files
> off all sorts of media, and even from formatted drives. I haven't tried
> it off a Cisco switch or router.
>
> It seems likely to me that long term storage devices in routers and
> switches will retain most, and possibly all, of their data in a
> recoverable or largely recoverable state unless explicit steps are taken
> to overwrite it.
>
> Maybe it would be a good idea to prepare a large file of random data and
> write it to any long term storage devices at some point. Filling the
> device with random data would probably leave a little structural info
> untouched (directory entries and suchlike) but should obliterate most
> actual data.
>
> Since the flash memory in such devices is usually removable without much
> difficulty, it might be possible to shred the data more conveniently
> (and probably faster and more effectively) by putting it into a card
> read/writer of some sort.
>
> On the other hand, I could be wrong.
>
> Regards, K.
>
> --
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> Karl Auer (kauer at biplane.com.au)
> http://www.biplane.com.au/kauer
>
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-- 
Regards,
Jason Leschnik.

[m] 0432 35 4224
[w@] jason dot leschnik <at> ansto dot gov dot au
[U@] jml974 at uow.edu.au