TIdMappedFTP is a
TIdMappedPortTCP descendant that implements a port-based proxy for FTP connections. TIdMappedFTP allows threaded client connections to a local
TIdFTPServer to be redirected to remote FTP systems using port-mapping. TIdMappedFTP creates instances of
TIdMappedFtpThread and
TIdMappedFtpDataThread to service local connections to the proxy server, and establish the remote connection using the specified port number.