ls command

[Marcelo G Narciso]

Hi,

I have installed wu-ftpd-2.6.2_5 is a FreeBSD  Operational System,
5.3-STABLE FreeBSD.

The ls command is not OK. If I try to execute ls command, nothing
happens.

ftp> ls
500 'EPSV': command not understood.
227 Entering Passive Mode (200,0,70,43,205,22)
150 Opening ASCII mode data connection for /bin/ls.
226 Transfer complete.
ftp>

How can I solve this problem?

Thanks.