Jftpgw is an FTP proxy/gateway that uses the FTP protocol (unlike those FTP proxies that fetch an FTP file but work as an http proxy). You can use it to make servers behind a firewall/NAT server (masquerading server) accessible or to allow users behind such solutions to transfer files to and from the outside of the LAN. Jftpgw is highly configurable and can be run as a stand-alone daemon or under control of inetd. A wide range of options can be spedified per client, server or user. Other features are: support for a transparent proxy mode, forwarding, file caching, detailed logging, port ranges and session limits.