gistfile1.php

$container->loadFromExtension('security', 'config', array(
    'provider' => array(
        'main' => array(
            'password_encoder' => 'sha1',
            'document' => array(
              'class' => 'Application/BlogBundle/Document/User',
              'property' => 'username'
            )
        )),
    'firewalls' => array(
        'admin' => array(
          'form_login' => array(
                'check_path'                     => '/login_check',
                'login_path'                     => '/login',
            ),
          'anonymous' => true,
          'logout' => true,
        ),
    ),
    'access_control' => array(
        array('path' => '/admin/.*', 'role' => 'IS_AUTHENTICATED_FULLY'),
        array('path' => '/.*', 'role' => 'IS_AUTHENTICATED_ANONYMOUSLY'),
    ),
));