FTP Server - error 426

  • Thread starter Georges Heinesch
  • Start date
G

Georges Heinesch

Hi.

I have a very serious problem with my FTP server. It started all of a
sudden, without me able to say for what reason. I didn't change the
system dramatically.

I get disconnects after 3-10 minutes! See the BlackMoon FTP Server and
SmartFTP (Client) logs below.

What happens ...
Initial connection is established, download initiated (passive mode).
After #3-10 minutes, the transfer stops. It looks like the clients would
initiate the disconnection, but I tested the scenarios with 2 different
clients (see below). Both fail after a while.

What I tried to get rid of this issue ...
1. switched off firewalls on both sides - didn't help!
2. changed client from SmartFTP to standard Win2000 DOS ftp - didn't help!
3. widely increased timeouts on server and client - didn't help!

The upload to the server seems (!) to work properly (strange!). Only the
download seems to be affected.

I'm definitely running out of ideas. Any (!) help would be greatly
appreciated!!!

---- cut here ----

BlackMoon FTP Server log:

Fri, Jul 04 (15:35:17) - Connected to 158.64.4.40 on port 3823.
Fri, Jul 04 (15:35:18) - 220 BlackMoon FTP Server Version 2.6.2 Release
2 - Build 1687. Free Edition. Service Ready
Fri, Jul 04 (15:35:18) - USER media
Fri, Jul 04 (15:35:18) - 331 User name okay, need password.
Fri, Jul 04 (15:35:18) - PASS xxxxx
Fri, Jul 04 (15:35:18) - 230 User logged in, proceed.
Fri, Jul 04 (15:35:18) - SYST
Fri, Jul 04 (15:35:18) - 215 UNIX Type: L8
Fri, Jul 04 (15:35:18) - FEAT
Fri, Jul 04 (15:35:18) - 211-Extensions supported:
Fri, Jul 04 (15:35:18) - SIZE
Fri, Jul 04 (15:35:18) - MDTM
Fri, Jul 04 (15:35:18) - AUTH TLS
Fri, Jul 04 (15:35:18) - AUTH SSL
Fri, Jul 04 (15:35:18) - PBSZ
Fri, Jul 04 (15:35:18) - PROT
Fri, Jul 04 (15:35:18) - CLNT
Fri, Jul 04 (15:35:18) - 211 END
Fri, Jul 04 (15:35:18) - CLNT SmartFTP 1.0.976
Fri, Jul 04 (15:35:18) - 200 Noted.
Fri, Jul 04 (15:35:18) - REST 100
Fri, Jul 04 (15:35:18) - 350 Restarting at 100. Send STORE or RETRIEVE
to initiate transfer
Fri, Jul 04 (15:35:18) - REST 0
Fri, Jul 04 (15:35:18) - 350 Restarting at 0. Send STORE or RETRIEVE to
initiate transfer
Fri, Jul 04 (15:35:18) - PWD
Fri, Jul 04 (15:35:19) - 257 "/" is the current directory
Fri, Jul 04 (15:35:19) - CWD /video
Fri, Jul 04 (15:35:19) - 250 Requested file action okay, completed.
Fri, Jul 04 (15:35:19) - PWD
Fri, Jul 04 (15:35:19) - 257 "/video" is the current directory
Fri, Jul 04 (15:35:19) - TYPE A
Fri, Jul 04 (15:35:19) - 200 Command okay.
Fri, Jul 04 (15:35:19) - PASV
Fri, Jul 04 (15:35:19) - 227 Entering Passive Mode (80,90,3,23,12,12)
Fri, Jul 04 (15:35:19) - LIST -aL
Fri, Jul 04 (15:35:19) - 150 File status okay; about to open data
connection.
Fri, Jul 04 (15:35:20) - 226 Closing data connection. Transfer Complete
(189 bytes)
Fri, Jul 04 (15:35:27) - TYPE I
Fri, Jul 04 (15:35:27) - 200 Command okay.
Fri, Jul 04 (15:35:27) - PASV
Fri, Jul 04 (15:35:27) - 227 Entering Passive Mode (80,90,3,23,12,15)
Fri, Jul 04 (15:35:28) - REST 133878348
Fri, Jul 04 (15:35:28) - 350 Restarting at 133878348. Send STORE or
RETRIEVE to initiate transfer
Fri, Jul 04 (15:35:28) - RETR stnem.mpg
Fri, Jul 04 (15:35:28) - 150 File status okay; about to open data
connection.
Fri, Jul 04 (15:44:23) - ÿÿABOR
Fri, Jul 04 (15:44:23) - 502 Command not implemented.
Fri, Jul 04 (15:44:23) - 426 Data Connection closed; transfer aborted.
Fri, Jul 04 (15:45:13) - NOOP
Fri, Jul 04 (15:45:13) - 200 Command okay.
Fri, Jul 04 (15:46:05) - NOOP
Fri, Jul 04 (15:46:05) - 200 Command okay.
Fri, Jul 04 (15:46:56) - NOOP
Fri, Jul 04 (15:46:56) - 200 Command okay.

SmartFTP log:

Resolving host name geha.dyndns.org...
Connecting to (geha.dyndns.org).
Connected to (geha.dyndns.org) -> IP: 80.90.3.23 PORT: 21.
Socket connected waiting for login sequence.
220 BlackMoon FTP Server Version 2.6.2 Release 2 - Build 1687. Free
Edition. Service Ready
USER multimedia
331 User name okay, need password.
PASS (hidden)
230 User logged in, proceed.
SYST
215 UNIX Type: L8
FEAT
211-Extensions supported:
SIZE
MDTM
AUTH TLS
AUTH SSL
PBSZ
PROT
CLNT
211 END
CLNT SmartFTP 1.0.976
200 Noted.
REST 100
350 Restarting at 100. Send STORE or RETRIEVE to initiate transfer
REST 0
350 Restarting at 0. Send STORE or RETRIEVE to initiate transfer
PWD
257 "/" is the current directory
CWD /video - DVD Rips
250 Requested file action okay, completed.
PWD
257 "/video" is the current directory
TYPE A
200 Command okay.
PASV
227 Entering Passive Mode (80,90,3,23,14,68)
Opening data connection IP: 80.90.3.23 PORT: 3652.
LIST -aL
150 File status okay; about to open data connection.
189 bytes received successfully. (189 B/s) (00:00:01).
226 Closing data connection. Transfer Complete (189 bytes)
TYPE I
200 Command okay.
PASV
227 Entering Passive Mode (80,90,3,23,14,77)
Opening data connection IP: 80.90.3.23 PORT: 3661.
REST 114312448
350 Restarting at 114312448. Send STORE or RETRIEVE to initiate transfer
RETR stnem.mpg
150 File status okay; about to open data connection.
Connection closed. Server timeout.
ABOR
426 Data Connection closed; transfer aborted.
502 Command not implemented.
NOOP
200 Command okay.
NOOP
200 Command okay.
NOOP
200 Command okay.
NOOP
200 Command okay.
NOOP
200 Command okay.
NOOP
200 Command okay.
NOOP
200 Command okay.
NOOP
200 Command okay.
....
 

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