On Jun 3, 2010, at 3:51 AM, Calomel Org wrote:

> Teemu,
>
> Are you sure the ftp server you are connecting to supports active and
> passive ftp? You may want to try your test against ftp.openbsd.org.

That is a very good point. I thought so as I got both modes working
from different nodes, but I am not sure any more. I tried to
ftp.openbsd.org and the results are different indeed.

>From a host behind my pf machine:

host$ ftp ftp.openbsd.org
Connected to openbsd.sunsite.ualberta.ca.
ftp> ls
229 Entering Extended Passive Mode (|||60318|)
ftp: Can't connect to `129.128.5.191': Connection refused
200 EPRT command successful.
150 Opening ASCII mode data connection for '/bin/ls'.
total 8
drwxr-xr-x  2 0  0  512 May  4  2009 etc
drwxr-xr-x  3 0  0  512 Jul 21  2009 pub
226 Transfer complete.

host$ ftp -p ftp.openbsd.org
Connected to openbsd.sunsite.ualberta.ca.
ftp> ls
229 Entering Extended Passive Mode (|||63762|)
ftp: Can't connect to `129.128.5.191': Connection refused

>From the pf machine:

fw$ ftp ftp.openbsd.org
Connected to openbsd.sunsite.ualberta.ca.
ftp> ls
150 Opening ASCII mode data connection for '/bin/ls'.
total 8
drwxr-xr-x  2 0  0  512 May  4  2009 etc
drwxr-xr-x  3 0  0  512 Jul 21  2009 pub
226 Transfer complete.

fw$ ftp -p ftp.openbsd.org
Connected to openbsd.sunsite.ualberta.ca.
ftp> ls
150 Opening ASCII mode data connection for '/bin/ls'.
total 8
drwxr-xr-x  2 0  0  512 May  4  2009 etc
drwxr-xr-x  3 0  0  512 Jul 21  2009 pub
226 Transfer complete.

If that doesn't ring a bell and you still have time and
interest, my pf.conf is at http://www.rinta-aho.org/tmp/pf.conf

Thanks!

Teemu

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