al programs
or scripts at various points in the process of handling FTP commands.  By
conscious design, the core ProFTPD engine does not and will not execute
external programs.  This is a security decision, as it was decided not to allow
ProFTPD to serve as a means of compromising a system or disclosing information
via bugs in external programs or scripts.  Use of this module allows for such
external programs to be executed, and also opens up the server to the
mentioned possibilities of compromise or disclo