Re: FTP Questions

[Scott Klement <midrange-l@xxxxxxxxxxxxxxxx>]

> The ftp stops at a certain record and disconnects and the file we 
> receive is the same every time we try to get it with the same record 
> count.

So you're receiving part of the file, but not all of it?  Is that correct? 
> From the log you posted, I would've assumed that you didn't receive 
anything, because that's the most common problem with FTP.  But, in 
reality, you're receiving part of the file.  If that's the case, you can 
rule out a bunch of things:

a) It's not a firewall issue.
b) It has nothing to do with passive vs. standard FTP mode.
c) It has nothing to do with permissions.

The error message in your log says this: "Unable to receive data from 
TCP/IP.".   This means that something went wrong during communications.  I 
don't see how that could possibly be bad data in the file!  FTP doesn't 
care what data is in the file...  The fact that downloading this file 
works just fine from a PC makes it clear that the contents of the file 
aren't the problem.  (Unless the FTP client is giving you incorrect error 
messages, of course!)

Perhaps there's a bug in the TCP/IP stack in i5/OS.  Or perhaps ICMP is 
blocked by a firewall... I've had that problem where someone blocked ICMP 
and that caused my FTP transfers from i5/OS to get disconnect errors. 
Solved the problem by using a FreeBSD FTP proxy.