bios? nope forget it. everything else is fine thru SSH (even X). your asking certain questions that have no purpose on a site like Slashdot. so hit up the forums for your Distro flavor. don't forget NFS packet sizes vary on some unix. depending on what you use, set it. try not to get spoiled and use someones pretty app, they only make you lazy. Good Luck

Its unfortunate that Non-Linux Users associate Linux as A complete system (its not).
If you mean KERNEL yes your right...(who want to do that anyways?).
but Distro wise?
yes THEY CAN be cracked, anything can be cracked.
UNIX wise, it depends on whats flawed on a "STOCK" install.
I repeat... "STOCK" install.
As well as wrong permissions on things that talk to things, that talk to things, that talk to things. LOL! :)
and using what already exists on a system to help you do things (long live | !).
flaws are the key.