Great.
It's a PHPBB 3 forum, only a folder for uploaded avatars has 777 permissions, the main files are set to 644.
.htaccess:
DirectoryIndex portal.php index.php index.html index.htm
<Files "config.php">
Order Allow,Deny
Deny from All
</Files>
<Files "common.php">
Order Allow,Deny
Deny...