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3proxy 0.8
January 2016


Tiny but very powerful proxy


ftppr - FTP proxy gateway service


ftppr [-d] [-l[[@]logfile]] [-pport] [-iinternal_ip] [-eexternal_ip] [-hdefault_ip[:port]]


ftppr is FTP gateway service to allow internal users to access external FTP servers.


-I Inetd mode. Standalone service only.
-d Daemonise. Detach service from console and run in the background.
-t Be silenT. Do not log start/stop/accept error records.
-u Never look for username authentication.
-e External address. IP address of interface proxy should initiate connections from. By default system will deside which address to use in accordance with routing table.
-i Internal address. IP address proxy accepts connections to. By default connection to any interface is accepted. It's usually unsafe.
-h Default destination. It’s used if targed address is not specified by user.
-p Port. Port proxy listens for incoming connections. Default is 21.
-l Log. By default logging is to stdout. If logfile is specified logging is to file. Under Unix, if '@' preceeds logfile, syslog is used for logging.
-S Increase or decrease stack size. You may want to try something like -S8192 if you experience 3proxy crashes.


You can use any FTP client, regardless of FTP proxy support. For client with FTP proxy support configure internal_ip and port in FTP proxy parameters. For clients without FTP proxy support use internal_ip and port as FTP server. Address of real FTP server must be configured as a part of FTP username. Format for username is username@server, where server is address of FTP server and username is user's login on this FTP server. Login itself may contain '@' sign. Only cleartext authentication is currently supported.


Report all bugs to


3proxy is designed by Vladimir 3APA3A Dubrovin ()


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