Re: ftp quote command not working

Thanks Scott.

My terminology was off quite a bit with the earlier post.  After I read it
again it was painfully obvious I got in a hurry.  Would the term subcommand
be a better choice for the quote keyword?

Yes, this machine is behind a firewall.  We connect through a vpn and it is
very possible that is the culprit here.  I'm not familiar with the network
setup between these two specific machines.

Here's the script I'm using for this test:
quote syst
quote time 500

Output from ftp run remotely:
257 "QGPL" is current library.
Enter an FTP subcommand.
> quote syst
215  OS/400 is the remote operating system. The TCP/IP version is "V5R2M0".
Enter an FTP subcommand.
> quote time 500
500 Syntax error, command unrecognized: 'time 500'

Output from ftp run locally (loopback?  127.0.0.1):
  257 "QGPL" is current library.
> quote syst
  215  OS/400 is the remote operating system. The TCP/IP version is
"V5R2M0".
> quote time 500
  250 Inactivity time-out set to 500 seconds.

Thanks,
Bruce


"Scott Klement" <klemscot@xxxxxxxxxxxx> wrote in
message news:20040304171309.J63367@xxxxxxxxxxxxxxxxxxx
>
> Hi Bruce,
>
> For the sake of clarity, I'm going to use the term "client" to refer to
> a "client program."  and "server" to refer to a "server program."   When I
> say "client" I'm not referring to your customer, just refering to the
> program's role in the FTP conversation.
>
> > This tells me that the client ftp server *does* allow the quote command
to
> > execute.
>
> Sigh... this makes no sense.  "quote" isn't a command that's sent to the
> server.   It's something that you type into the client.  Err.. not sure if
> my meaning is clear, so I'll elaborate:
>
> For example, when you type "dir" into your FTP client, the word "dir" is
> not sent to the server.   Instead, the client (under the covers) sends
> the "LIST" command to the server.
>
> When you type "PUT" the FTP client sends (again, under the covers) STOR to
> the server.
>
> What I'm trying to explain, I guess, is that the data that you type into
> the client is not normally sent as-is to the server, the client inteprets
> it, and behind the covers sends the appropriate FTP protocol command to
> the server.
>
> But, QUOTE is a special case.  When you type QUOTE it sends any arguments
> after the word QUOTE to the server verbatim.  It therefore allows you to
type
> commands directly to the server without the client needing to understand
> them.
>
> For example, when you do:
>
>     QUOTE SITE NAMEFMT 1
>
> the client will send:
>
>     SITE NAMEFMT 1
>
> to the server, as-is.  The client doesn't understand the data that it's
> sending with QUOTE.  This allows the server to offer special features that
> aren't explcitly described in the FTP protocol without the need to write
> special client programs.
>
> (I hope that makes sense now)
>
> > Not sure if the server does anything diff when ftp'ing to itself.
> > I assume that it still behaved as client and server so the rcmd would
> > execute exactly like if it was from a real remote host.  Maybe that's my
bad
> > swag.
>
> My guess is that your customer is behind a firewall.  That firewall has
> it's own FTP server, and to improve security, it redirects all FTP
> requests to it.  (It could also be an FTP proxy, but it amounts to the
> same thing.)
>
> The "quote RCMD" isn't understood by the firewalls FTP server.  Why?
> Because RCMD is not a part of the standard FTP protocol, it's an
> iSeries-only extension.  (Which is why you need QUOTE in order to execute
> it)
>
> The other possibility, of course, is that you're not talking to an iSeries
> FTP server.  When your connected, try typing:
>
>     quote syst
>
> This tells the FTP server to respond with the type of system that it's
> running on.  For example, if I connect to my FreeBSD FTP server I get:
>
> ftp> quote syst
> 215 UNIX Type: L8 Version: BSD-199506
>
> If I connect to my iSeries FTP server, I get:
>
> ftp> quote syst
> 215  OS/400 is the remote operating system. The TCP/IP version is
"V5R2M0".
>
> If my suspicions are true, you'll get something different...
>
> hope that helps...
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