BuddyPress.org

Travel_junkies code redirects logged out users to the main sign up page which is what I thought you were asking for, it can easily be configured to allow main directory pages to be viewed, but nothing deeper, or I guess to redirect to another page of choice, it’s not a plugin per se it’s the core function and would run from a file such as bp-custom.php it could be turned into a plugin quite easily though as a plugin at basic level is simply a convenient on/off switch. If ‘Redirects’ works for then that’s fine, iot’s not one I’ve run across before.