[yocto] how to disable shell access

[Burton, Ross]

On 17 June 2014 21:23, Insop Song <insop.song at gmail.com> wrote:
> 2. how to block shell access but to open for debugging access
> For this, I could think of that we could block ssh access and only open console.
> Or opening ssh for a hidden port only.

The Raumfeld multi-room audio system has a neat solution for this: you
insert a USB stick with a special file to enable the SSH daemon.  The
filename is a md5sum, presumably a hash of something along the lines
of "open sesame".  This is their magic "root me" button, as root has
no password.

Ross