allow-port
This controls whether remote users are allowed to use active FTP, which
uses the PORT command. If you disable this, those users
will be required to use passive FTP, which uses PASV.
Unless you're sure what you're doing, leave allow-port set
to yes. Otherwise you risk alienating a lot of users.
Users should have the option of using either active or passive FTP, unless
your site has some sort of limitation.
Examples:
allow-port=yes
allow-port=yes
Recommendation:
