Re: Authentication check on non-WP page
Why not load the bbPress environment and then call function to check is user is logged in? I have done the same in WP, so I think it might be possible in bbPress very easily too.
// load the WP environment so that I can call on the WP functions to make sure that user is logged in before accessing members area
require( dirname(__FILE__) . '/wp-load.php' );
if (!is_user_logged_in()) // You can't access the members area without login. Now can you?
For bbPress, it should be like
// find the name of the function you will need