Yii Gii You are not allowed to access this page.

$ vi test_project/protected/config/main.php

return array(
    ......
    'modules'=>array(
        'gii'=>array(
            'class'=>'system.gii.GiiModule',
            'password'=>'pick up a password here',
            'ipFilters'=>false,
            // 'newFileMode'=>0666,
            // 'newDirMode'=>0777,
        ),
    ),
);

References :
php - gii not working in yii - Stack Overflow