FOSUserBundle allowing 'Anon' user to access `/admin` - symfony

Question

I am using the FOSUserBundle and am successfully creating users in my database. However, I'm trying to log users in and only have ROLE_ADMIN users access /admin by following the Symfony security walk-through.
However, even without having figured out logging users in, when I try to access localhost/app_dev.php/admin I am able to access it as the "Anon" user. Below are my security.yml and controller files:
app/config/security.yml
security:
encoders:
FOS\UserBundle\Model\UserInterface: bcrypt
role_hierarchy:
ROLE_ADMIN: ROLE_USER
ROLE_SUPER_ADMIN: ROLE_ADMIN
providers:
fos_userbundle:
id: fos_user.user_provider.username
firewalls:
dev:
pattern: ^/(_(profiler|wdt)|css|images|js)/
security: false
main:
pattern: ^/
form_login:
provider: fos_userbundle
csrf_provider: security.csrf.token_manager
logout: true
anonymous: true
access_control:
- { path: ^/admin/, role: ROLE_ADMIN }
src/AppBundle/Controller/DefaultController.php
class DefaultController extends Controller
{
/**
* #Route("/admin", name="admin")
*/
public function AdminAction(Request $request)
{
return $this->render('default/admin.html.twig', array(
'title' => 'Welcome Admin!!'
));
}
}

Answer 1

I'm not familiar with FOSUserBundle however your access_control entry is for the path /admin/ - note the trailing slash whereas your example localhost/app_dev.php/admin doesn't. If you remove that from your access_control entry or change your routes then this should work as expected.
E.g.
access_control:
- { path: ^/admin, role: ROLE_ADMIN }