Virtualbox remote access

[sam1275tom]

Hi everyone.
I'm going to provide a Virtual machine to a friend, the host will be on 24h a day, and I know how to let him access it when it's running, and I read there's a way to use "vboxmanage" to control the virtual client out-of-band, but problem is I don't want him be able to control the client's resource setting or even the whole virtualbox software, I want to limit him to ONLY that virtual client I created, and ONLY able to:
BIOS level remote screen / control;
Power on / off / Reset / suspend;
Redirect ISO/IMG/USB from his PC to install any OS he want;
Share any file/clipboard from his PC.
ONLY to the specified client. Is that possible? How can I do it?
Thank you.

 

[USAFRet]

1. Why?
2. Physical access trumps all.

Create a snapshot, and if/when he screws it up, revert back to that snapshot.

 

[McHenryB]

I don't believe that VirtualBox can access files from a remote PC without your granting far more access to your PC than you wish to. And it is going to be unbearably slow over the Internet. If he has a computer why does he not just set up VirtualBox on it - what's the point of you hosting the software?