impossible to debug CI controller in netbeans with Xdebug ?

[eluser]ludo31[/eluser]
Hello ;
I try to make run debug in netbeans and it works , but when I try with CI I can't with controller file and there is a message like that

Code:

Forbidden

You don't have permission to access /MonSite/application/controllers/annonce.php on this server.

I already change the config

Code:

$config['uri_protocol'] = "PATH_INFO";
$config['enable_query_strings'] = TRUE;

When I make breakpoint on a line in particular controller an right click debug I have this kind of message :

Code:

Forbidden

You don't have permission to access /MonSite/application/controllers/annonce.php on this server.

thanks for your help