Security
Web file browser includes a builtin authentication (look at the source) but you *must* run PHP as a module in order to be able to turn it on.
You can also rely on your web server for authentication.
For instance with Apache you can setup a .htaccess
file like this :
<Files "wfb.php">
AuthType Basic
AuthUserFile ".htpasswd"
AuthName "webFileBrowser"
Require valid-user
</Files>