We use a NAS in our small office which is set-up so that each person has their own private directory on it. However the password to enter the HTTP administration area has been forgotten so we're unable to add/edit further people onto it.
Rather than doing a reset of the device and possibility losing data, I thought this might be an interesting chance to run a cracker against it to recover the password.
Please note we run Windows, so no Linux software please :)