difatti mi pare sia uno di quelli di cui al caso 2
Codice:
$ ftp
ftp> open ftp2.ngi.it
Connected to ftp2.ngi.it.
220 ProFTPD 1.2.5rc2 Server (NGI Public FTP Server - Limited downloads)
Name (ftp2.ngi.it): anonymous
331 Anonymous login ok, send your complete email address as your password.
Password:
230 Anonymous access granted, restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> passive
Passive mode on.
ftp> ls
421 Service not available, remote server has closed connection
Passive mode refused.
ftp>