When editing a post, in the options on the right in the collapsible accordions there is a box to enter a password to password-protect that entry. As far as making a page so that you have to be logged into ContentBox to view it, I’m not sure but I think you may be able to do something with the application firewall that’s built into contentBox.
I haven’t played much with that yet, so Luis would have to jump in and say what’s possible with it.
ColdBox Platform Evangelist
Ortus Solutions, Corp