These Are a few Protection Commands

/cprivate Privates your chest/furnace/door

/cremove Removes the protection from the selected item

/cpublic Makes the selected item Public

/cpassword [password] Adds the selected password to the item

/cunlock [password] Unlocks the selected item with the password

/climit Shows your protection limit

/cmodify Modifys the protection

/cinfo Shows information on the protection

Those are all the commands (I think)
If I left one out reply with the one
I left out.

~Bill~