[c-nsp] Wipe a Device?

[Ryan O'Connell]

On 16/01/2005 21:20, Djerk Geurts wrote:

>Dir all
>
>Will show you all file systems. Except for disks (disk0, disk1)
>  
>

You need dir /all to show deleted files too.

If you're paranoid, you need to format the flash and fill it completely 
with other data (IOS images, files full of nulls, anything really) to 
make sure the config really is gone - on many devices, you can't 
actually properly delete files without formatting the flash anyway. 
Given that flash is usually only 24 or 64MB or so and the predictability 
of the text, it's pretty easy to find where any old config files are on 
the disk.

This all of course pertains to IOS only - it different with different 
Cisco OSes. Wiping a data centre full of equipment because you have to 
hand it back isn't as easy as it first seems, having been there before 
now more than once. Well over 50% of second hand Cisco equipment I've 
seen has some other (Usually defunct, but not always) ISPs configs still 
in flash.

-- 
         Ryan O'Connell - CCIE #8174
<ryan at complicity.co.uk> - http://www.complicity.co.uk

I'm not losing my mind, no I'm not changing my lines,
I'm just learning new things with the passage of time