ftp.exe not uploading files

Question

FTP

Hey Habr.
Actually, the subject, but with one significant clarification - it does not download only through ftp.exe and only on one machine , while other ftp clients work (Filezilla, Total Commander, even Explorer).
I checked it on two more machines connected, however, to another provider - everything is fine.

Windows 7, white IP, no router, firewall disabled, Comodo Firewall installed, but set to "Inactive" state (also checked in working mode, ftp.exe is trusted, no restrictions).

I found a similar problem, they advised me to change the IE settings - it does not help.
Tried to switch to passive mode - does not help.

I run it as ftp -n -d -s:D:\ttt\ftp.comm , where ftp.comm contains:

open host.name.ru
USER dummy 123456
put D:\ttt\test.zip
bye

In response I get:

C:\Users\JhaoDa>ftp -n -d -s:D:\ttt\ftp.comm
ftp> open host.name.ru
Связь с host.name.ru.
220 (vsFTPd 2.2.2)
ftp> USER dummy 123456
---> USER dummy
331 Please specify the password.
---> PASS 123456
230 Login successful.
ftp> send D:\ttt\test.zip *** файл в пару килобайт
---> PORT xx,xx,xx,xx,29,78
200 PORT command successful. Consider using PASV.
---> STOR test.zip
150 Ok to send data.
*** проходит минут 5, я нажимаю Ctrl+C, ибо дальше ждать бесполезно
*** если не трогать, то и час висеть будет
Разрыв любых активных подключений...
226 Transfer complete.
ftp> bye
---> QUIT
221 Goodbye. 

The file is created on the server, but has zero size.
Technical support showed a piece of the log:

Apr 17 20:00:15 vsftpd[8921]: [dummy] OK LOGIN: Client "xx.xx.xx.xx"
Apr 17 20:00:36 vsftpd[8924]: [dummy] OK UPLOAD: Client "xx.xx.xx.xx", "/test.zip", 0.00Kbyte/sec

Where to dig, dear habr?

Answer 1

Take a traffic dump and look at it. (under Windows - wireshark is possible). In theory, after your FTP client has sent the PORT command, the server should connect to it. See if there are server attempts to connect at this time. Just try to connect from any server in the world to your machine (client) on an arbitrary non-standard port - you should see the traffic in wireshark. Maybe your ISP cuts all the same. Or they (on the FTP server) have a particularly fascist firewall that does not allow such outgoing connections.

Answer 2

We had this on New Year's Eve. from all hosts it was flooded / overwritten, from where they were sitting - no, no client
woke up the administrator of the provider at night, fortunately he was also out
of touch in general, reboot the car

Answer 3

Give the command PASV before PUT, the remote server advises you. Most likely, an active FTP is hidden somewhere, maybe even at the remote end.

Answer 4

Here is what Wireshark shows:

FTP	105	Response: 200 PORT command successful. Consider using PASV.
FTP	69	Request: STOR test.zip
TCP	60	ftp > kjtsiteserver [ACK] Seq=129 Ack=73 Win=14720 Len=0
FTP	76	Response: 150 Ok to send data.

и тут же
FTP	78	Response: 226 Transfer complete.
TCP	54	kjtsiteserver > ftp [ACK] Seq=73 Ack=190 Win=8004 Len=0