You can provide additional security by adding FTP exit programs to the File Transfer Protocol (FTP) server and client exit points, so that you can further restrict FTP access to your system.
You can write an FTP server request validation exit program to restrict the CL commands and FTP subcommands that users can access.
You can control the authentication of users to a TCP/IP application server with an exit program for the server logon exit point.
You can write an FTP client request validation exit program for the client exit point: request validation. This controls which FTP client functions a user can perform.
Depending on your situation, you might consider limiting access to FTP subcommands using Application Administration Limit Access as an alternative to writing exit programs for the FTP server request validation and FTP client request validation exit points.
To allow the exit programs to work properly, Install and register your exit point programs. If your programs are no longer needed, properly remove the exit point programs to prevent their future functioning.
Related concepts
Configuring anonymous File Transfer Protocol Request validation exit point: client and server