Custom Login

/*
Plugin Name: My Custom Login
Version: 0.1-alpha
Description: Restrics page login
Author: Your Name
Author URI: Your URL
Plugin URI: Your URL
Text Domain: Your Text Domain
Domain Path: /languages
*/

function user_filter_page_request() {

	global $post;

	if( !is_user_logged_in() && user_is_logged_in_page($post) ) {
		wp_redirect( wp_login_url( get_permalink( $post->ID ) , true) );
	}

}

function user_is_logged_in_page($post) {

	$post;

	if( $post->ID == 223 ) //Add any page that does not need a login here, leave blank if that is never the case
		return false;
	else
		return true;

}
add_action( 'template_redirect', 'user_filter_page_request' );