// 認証なしアクセス可
            $this->Auth->allow('captcha');

SampleController::beforeFilter() - APP/controllers/sample_controller.php, line 21
Dispatcher::_invoke() - CORE/cake/dispatcher.php, line 209
Dispatcher::dispatch() - CORE/cake/dispatcher.php, line 194
[main] - APP/webroot/index.php, line 88