Kernel patching is wonderful :)
A UML is "User-Mode Linux", basically starting up a new kernel as a
userland process, and you get a whole miniture system inside the new
process. Of course, you can do whatever you want to this kernel you're
starting up, including using a filesystem that is readonly or patching
the kernel to remove read-write support, or even simply controlling file
permissions on the outside of the UML (make sure the user the UML
process is running as can't write to the image file).
--MonMotha
Robert Green wrote:
--- MonMotha <[EMAIL PROTECTED]> wrote:
I've used UML before to isolate services. Ever tried breaking out
of a
chroot jail? This is even better. Ever tried breaking a system
where
the only thing available is a readonly root filesystem with a
single
daemon and a few required utils? Gotta love UML :)
--MonMotha
Pardom my ignorance, but what's "UML" ? And how do you get a readonly
root file system? CD-ROM, or is it just the file permissions?
I'm planning on setting up a web server and a MUD server and it might
be handy to know how to make it tamper proof, as it were....
Thanks,
Rob
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