Here is a little piece of code that is very useful to me in my BuddyPress sites. It allows you to make the social network private, and to access it, you must become a member.

[code]function sqr_prevent_search_guest_user() {
if ( class_exists( 'BuddyPress' ) ) {
if (!is_user_logged_in() && (bp_is_directory() || bp_is_user())) {
wp_redirect(home_url() . '/register/');
exit;
}
}
}
add_action('template_redirect', 'sqr_prevent_search_guest_user');[/code]

This code therefore forces the visitor, if he is NOT connected to your site – if (!is_user_logged_in() – AND he launches the network members page (directory) OR the page of a member (bp_is_user), this redirects him to the registration page, here /register/ in this case. You can change /register/ to your own registration page.

And what's more, this code is WPML compatible!

If you don't want to touch the functions.php file to incorporate this piece of code, use the very practical My Custom Functions, which will allow you to easily inject your codes from the WordPress dashboard.