Random disconnect during download

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Alec
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Joined: 2015-07-24 13:06

Random disconnect during download

#1 Post by Alec » 2015-07-24 13:20

Hello,

I have installed Filezilla Server 0.9.53 on a server on my network
I have already installed .37 on another server that is working great.
For security reason I would like to upgrade so I added the FZ .53

Migration of settings has been ok. I have copyed all FZ users directories on the new server, done the NAT redirection and things are going ok... more or less ... some files wan't download! I receive a weird behaviour when tring to download.

This is the log (client side):

Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Connected
Status: Starting download of /directory/file.xls
Command: CWD /directory
Response: 250 CWD successful. "/directory" is current directory.
Command: PWD
Response: 257 "/directory" is current directory.
Command: TYPE I
Response: 200 Type set to I
Command: PASV
Response: 227 Entering Passive Mode (31,194,xx,xxx,202,113)
Command: RETR file.xls
Response: 150 Opening data channel for file download from server of "/direcotry/file.xls"
Error: Connection timed out after 20 seconds of inactivity
Error: File transfer failed after transferring 333.200 bytes in 35 seconds
Status: Disconnected from server
Status: Resolving address of xxx.xxxx.xx
Status: Connecting to 31.194.xx.xxx:21...
Status: Connection established, waiting for welcome message...
Status: Insecure server, it does not support FTP over TLS.
Status: Connected
Status: Starting download of /directory/file.xls
Command: CWD /directory
Response: 250 CWD successful. "/directory" is current directory.
Command: TYPE I
Response: 200 Type set to I
Command: PASV
Response: 227 Entering Passive Mode (31,194,xx,xxx,195,54)
Command: REST 333200
Response: 350 Rest supported. Restarting at 333200
Command: RETR file.xls
Response: 550 Operation not permitted. (Seeking not permitted)
Error: Critical file transfer error


On server side, the server start to send the file, arriving around 20%, then the speed runs down to zero.
After a while it gives me 421 timeout.

The weirdest thing is that if I try to do this 4 - 5 times, 1 time it will work and download the full file ...

I have no more clue .... Perhaps the problem is that I have installed Filezilla like Local Administrator of the server than domain admin ? I dunno. The weird thing is that some file download without problem, other stops with that problem.

Any Idea ? Thank you

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botg
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Posts: 35506
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Last name: Kosse

Re: Random disconnect during download

#2 Post by botg » 2015-07-24 14:18

Response: 550 Operation not permitted. (Seeking not permitted)
That's not FileZilla Server you are connected to but some other server.

Alec
500 Command not understood
Posts: 4
Joined: 2015-07-24 13:06

Re: Random disconnect during download

#3 Post by Alec » 2015-07-24 14:24

botg wrote:
Response: 550 Operation not permitted. (Seeking not permitted)
That's not FileZilla Server you are connected to but some other server.

Thank you but, I'm sorry, I do not understand your answer.

I see the logs on Filezilla console, I'm clearly connected to it.
I can create file on that directory too with the user I'm connected remotely via Filezilla client.

Could you explain ?

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botg
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Posts: 35506
Joined: 2004-02-23 20:49
First name: Tim
Last name: Kosse

Re: Random disconnect during download

#4 Post by botg » 2015-07-24 15:17

FileZilla Server does not send such error messages. If the server sends this error message then you are obviously not connected to FileZilla Server but to some other server.

Alec
500 Command not understood
Posts: 4
Joined: 2015-07-24 13:06

Re: Random disconnect during download

#5 Post by Alec » 2015-07-24 17:40

Ok, thank you, should be a nat problem so. I will check better.

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boco
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Location: Germany

Re: Random disconnect during download

#6 Post by boco » 2015-07-25 01:59

Since you don't use a secured FTP session (TLS) everything on the way can inject their own data. Looks like some firewall (ISA?) or security software does exactly that.
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Alec
500 Command not understood
Posts: 4
Joined: 2015-07-24 13:06

Re: Random disconnect during download

#7 Post by Alec » 2015-07-25 14:16

boco wrote:Since you don't use a secured FTP session (TLS) everything on the way can inject their own data. Looks like some firewall (ISA?) or security software does exactly that.
It is a watchguard, and perhaps, since the rules is a ftp proxy and not bare tcp ip port forwording, you could be right.

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