Making WP Admin Folder accessable JUST under a different link

There’s a thread about this on the WordPress forums:

http://wordpress.org/support/topic/how-to-change-the-admin-url-or-wp-admin-to-secure-login?replies=13

The original article has three steps:

(1) Add constant to wp-config.php

define('WP_ADMIN_DIR', 'secret-folder');
define( 'ADMIN_COOKIE_PATH', SITECOOKIEPATH . WP_ADMIN_DIR);

(2) Add this filter to functions.php

add_filter('site_url',  'wpadmin_filter', 10, 3);
function wpadmin_filter( $url, $path, $orig_scheme ) {
    $old  = array( "/(wp-admin)/");
    $admin_dir = WP_ADMIN_DIR;
    $new  = array($admin_dir);
    return preg_replace( $old, $new, $url, 1);
}

(3) Add this line to .htaccess on your server

RewriteRule ^secret-folder/(.*) wp-admin/$1?%{QUERY_STRING} [L]

With these steps taken, your admin URL will be: http://www.yourdomain.com/secret-folder/