Re: FTP oddity

Sir:

David Tholen wrote:
Consider three machines, one running OS/2 version 4.52, one running
Linux (Fedora), and one running Windows XP. When I use FTP to transfer
large files between machines, I can get full bandwidth transfers with
the Windows firewall turned on between the Windows and Linux machines.
I can also get full bandwidth transfers between the OS/2 and Linux
machines. But if try to transfer files from the Windows machine to
the OS/2 machine, the speed is awful unless I turn off the Windows
firewall. With the firewall turned off, I can get full bandwidth
transfers, but sooner or later, the process hangs, and that's bad news
because the FTP daemon on OS/2 considers the file as open, even after
I kill the FTP process to end the hang, so I need to stop and restart
the OS/2 FTP daemon to release the partially transferred file. And
then it's a real pain to restart the FTP process because I have to
manually enter certain sets of filename that didn't get transferred
when the process hung the first time (I use wildcards to transfer lots
of files automatically).

Anybody know why Windows and OS/2 don't cooperate very well on FTP?

You best can answer this as you have the test setup. Run IPtrace on the OS/2 machine and Ethereal on the other two. Compare the chatter between pairs of machines and tell us what is happening. You should remember that FTP daemon on OS/2 is ancient compared to the other two. Bet OS/2 FTP daemon does not do passive mode transfers, which cause problems with Windows' firewall.
--
Bill
Thanks a Million!
.

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