I'm running the "twitter clone" Laconica internally at our business and it's working quite well, but we want to open it up so that employees won't need to use a VPN or similar to read it while out of the office. To facilitate this we need to turn the public time-line off for anonymous users so that people who accidentally visit the site can't read our internal discussions, only logged in users should be able to do this.
How do I turn off or "lock in" the public time-line in Laconica? Preferably using Laconica functionality.