Permissions
The first table on this page controls can be used to deny access to certain non-vital commands. For each command, you can choose whether to allow or deny access and choose which user types and classes it should be allowed or denied to. Unless denied, all commands are available to all users by default.

The second table allow you to prevent the upload of files that contain certain characters or matching certain regular expressions. This can be very useful if your anonymous FTP server has an incoming directory and you want to prevent users creating 'hidden' directories to store warez in. The first field in the table is a regexp like ^[A-z0-9]$ that defines allowable characters, the second is a series of regexps for filenames that are not allowed, the third is the user types that this restriction applies to, and the final column the full path to an error message file to be sent to the FTP client if an illegal file is uploaded.