FTP Service

[Narayan Alawandi]

Hi There,

I am using FTP commands in the schedule task batch file to login and transfer the file between one of the mailbox and my Client's server.

FTP works fine for 2 or 3 days and suddenly stops working, i mean FTP does not close its session even after the file transfer(task manager shows the open FTP session). And this stops the next file transfer.

I have attached the logfile which shows 3 sessions.

Session 1 and 2-- Successful
Session 3 -- Unsuccessful

After 3nd session ftp session does not close.

any ideas will be much appriciated,

Regards,

Narayan

[Steven E. Protter]

Shalom,

1) What is the Linux distribution and version number.
2) What is the ftp server being used? rpm -qa | grep ftp
3) What is the client for ftp?

Suggestions,

1) Try sftp public key encryption exchanged.
2) Check /var/log/messages for networking issues at the time of failure.
3) Check the remote system log
4) Check the network infrastructure for corresponding problems at time of failure.

SEP

[timmy2006]

I suppose we talking about win32 machine? (U wrote "... task manager shows ...")

1. From what to what platform you are connecting? (try 'telnet FTP_SEVER 21' - perhaps SERVER will show it's name)
2. Turn on Debug Mode on SERVER.
3. use tcpdump to port 20 and port 21.
if your ftp task is sheduled - run tcpdump before ftp session and make it write data to file - dont forget to limit number of packets in tcpdump call)
4. check if there IIS or IPFW|IPTABLES somwhere between client and server.
5. R U connecting directly? (client and server in the same network)

[Alpha977]

Install Ethereal on the windows machine and use tcpdump to linux machine.

Then open the tcpdump file with ethereal and "Follow the tcp stream".

Make the same with windows machine.