Opened 14 years ago

Closed 14 years ago

#5437 closed Bug report (rejected)

For one transfert on passive mode, creation of multiple sockets of command

Reported by: Constant Owned by:
Priority: normal Component: FileZilla Client
Keywords: multiple socket command Cc: nsah.constant@…
Component version: Operating system type: Windows
Operating system version: Windows XP SP3


Excuse me for my english.
I realize a tpdump capture to describe my problem with FileZilla Client 3.3.3
When i realise a upload, passive mode and keep alive option, of a large file, the transfert broken all 5 minutes. I found that it's my firewall who send me a RST packet. After analyze tcpdum capture between client and server, i see 2 connexions data and one connexion that not use "keep alive" command and my firewall with default timeout (5mn) on all session broken this session.
I add a files:

  • tcpdump file (client.cap) realize on client
  • filezilla.log: log of FileZilla Client
  • analyze.log: my analyze of tcpdump capture "client.cap"

Attachments (2)

analyze.log (4.3 KB ) - added by Constant 14 years ago.
My analyze of capture tpcdump
filezilla.log (16.5 KB ) - added by Constant 14 years ago.
Logs of FileZilla

Download all attachments as: .zip

Change History (3)

by Constant, 14 years ago

Attachment: analyze.log added

My analyze of capture tpcdump

by Constant, 14 years ago

Attachment: filezilla.log added

Logs of FileZilla

comment:1 by Tim Kosse, 14 years ago

Resolution: rejected
Status: newclosed

Your firewall is broken. A good firewall (or router for that matter) does not drop a connection unless it has been idle for more than 2 hours and 4 minutes. 2 hours is the minimum allowed TCP keep-alive interval and 4 minutes is the packet timeout.

See for details.

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