I have a computer that I use for practically everything. In the same room I have a second computer that I use purely for trialing Linux distributions, It currently has Debian, gNewSense and Kubuntu on it with Grub to choose between. This computer has no keyboard / mouse / monitor, but it has directly wired ethernet to the home network.
Is there any way I can set it to be remotely controlled from before / during grub so I can choose from the other computer which to run? I realise I can just crawl behind the desk and unplug the keyboard / mouse / monitor, but I don't particularly want to every time I reboot into a different distro.
I also realise that remote access during boot is a security risk so is there a way of allowing only one MAC address to do the controlling?