gii not working in yii

I am new in yii framework. In my site gii shows the error

Error 403 You are not allowed to access this page.

I set the gii in the config file like this

'gii'=>array(
    'class'=>'system.gii.GiiModule',
    'password'=>'test123',
    'ipFilters'=>array('192.168.0.101','127.0.0.1','::1'),
),

still it show the error