The Null Device
Now this is ingenious:
someone has devised a patch to the Linux kernel which allows you to essentially
split a Linux box into
several virtual servers
, each with its own root user, process space,
IP address space and such, all securely quarantined from each other.
The applications include virtual servers (i.e., you can give people root
on their own virtual servers on a machine without trusting them with the
entire machine), virtual firewalls, testing/teaching environments and many
more that people will undoubtedly come up with.
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