in the configuration file. You almost certainly want to allow passive connections, as otherwise many clients behind a firewall will be unable to connect.
| r - - r Active FTP operates on both server port 20 (for data transfers) and port 21 (for control commands) and involves a reply connection from the server to the client, which may be blocked by a firewall behind which the client is sitting. Passive FTP involves only server port 21 and is unlikely to cause problems with a standard firewall configuration that allows established connections. For more on firewall configuration, see Chapter 24.
Note that all options in the configuration file are specified in the form:
Was this article helpful?