Hello Joachim,

> we would install a PROFTPD Server in a DMZ behind our Firewall.
> We have installed a WEB-Server in the DMZ and a Mail-Server
> in the internal Network. Both of them works very well.
> If we access the FTP-Server via WEB we see the login message and the
> ftp-prompt. A pwd and cd runs perfect.
> If we do a "dir" or "ls" we see the line "220 Port Command
> successfull" and nothing goes on. The same comes from internal net.
>
> Which port have to be opened, that we can access the ftp-Server?
ftp uses port 21 for the commands and port 20 for the data. If you
say "ls" or "dir", the output sent to your terminal is already data.
Bye
        Uli

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Ulrich Roth
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E-Mail: rothimpact.de
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