Problem with URL, forum/index.php work but not just forum/
 

If I enter www.example.com/forum/ I can't get to my forum, but if I enter www.example.com/forum/index.php I do. Does anybody know what's wrong?


This is the message I get when visiting the www.example.com/forum-page.



You don't have permission to access /forum/ on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.