Cisco Sanitization

John Orthoefer jco at
Wed Jan 12 08:58:24 CST 2011

Really the only way to to clean devices with flash is to destroy the flash.   At a very least you'll need to reflash them with the current OS.   

Here is a copy of the DOD Guidelines for every thing...

The flash answer is to use something to write to EVERY address, then erase, or just pulverize it.


On Jan 12, 2011, at 9:41 AM, Green, Timothy wrote:

> Hey all!
> I'm currently creating a sanitization guide for all my hardware.  When I got to my Cisco devices I noticed there are numerous ways to reset them back to the default and clear the NVRAM.  Does anyone have a guide that includes sanitization information for all Cisco devices(at least switches, routers, IDS's, and ASA 5500 Series) so I don't have to recreate the wheel?
> Thanks,
> Tim

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