Re: FTP commands issue

The standard windows ftp client does not support pasv.

ftp> ?
Commands may be abbreviated. Commands are:

! delete literal prompt send
? debug ls put status
append dir mdelete pwd trace
ascii disconnect mdir quit type
bell get mget quote user
binary glob mkdir recv verbose
bye hash mls remotehelp
cd help mput rename
close lcd open rmdir
ftp> status
Connected to gdisys.corp.dekko.com.
Type: ascii; Verbose: On ; Bell: Off ; Prompting: On ; Globbing: On
Debugging: Off ; Hash mark printing: Off .

On Wed, Feb 14, 2024 at 12:08 PM Jim Oberholtzer <
midrangel@xxxxxxxxxxxxxxxxx> wrote:

You need to do that with an FTP command.

Pasv


Jim Oberholtzer
Agile Technology Architects

On Feb 14, 2024, at 10:23 AM, mlazarus <mlazarus@xxxxxxxxxxxx> wrote:

Hi Patrik,

If the issue is that the i side requires passive mode, how would I turn

off passive mode on the server side? I don't see that as an option in
CHGFTPA.

-mark

On 2/14/2024 3:07 AM, Patrik Schindler wrote:
Hello Mark,

Am 14.02.2024 um 05:19 schrieb mlazarus<mlazarus@xxxxxxxxxxxx>:

Thanks for the analysis and info. I switched to Filezilla and am now

able to do the transfer. Does that tell you anything about what may have
blocked the Windows client? Passive mode? Is passive mode configured on
the i?

Your problem is twofold:
- The standard Windows ftp client does not support passive mode — at

least to my understanding. Forcing the server to negotiate a passive data
connection ("quot") did not help as you've experienced.

- Probably your local Windows Firewall prohibited the incoming

connection from the FTP server in active mode on your first try.

Passive mode is negotiated ephemeral per session. Both the server and

client must support passive mode. That the Windows FTP client does not is
an anachronism. Windows not having an exception in the Firewall for the FTP
client itself is another case of bad vendor defaults.

You might want to learn some basics about FTP to gain a better

understanding what's going on:

https://en.wikipedia.org/wiki/File_Transfer_Protocol

:wq! PoC

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