FTP-сервер (http://www.proftpd.org/docs/)
- Debugging Problems (http://www.castaglia.org/proftpd/doc/contrib/ProFTPD-mini-HOWTO-Debugging.html)
- Configuring <Limit>s (http://www.castaglia.org/proftpd/doc/contrib/ProFTPD-mini-HOWTO-Limit.html)
- ProFTPD Supported FTP Commands (http://www.castaglia.org/proftpd/doc/contrib/ProFTPD-FTP-commands.html)