Re: Establishing P-t-P FTP connection

It's not too bad of a configuration. You need to create a PTP profile
with WRKTCPPTP. The manual has some good examples - find one that's
close and modify it. You'll need a PPP line description - the
controller and device should autocreate. I can send you configs off
list if you want.

On 1/25/07, jmmckee@xxxxxxxxxxxxxx <jmmckee@xxxxxxxxxxxxxx> wrote:

A modem is used to establish a TCP/IP connection to a specific destination ,
much like a home computer dialing (I still do this - vanishing breed)
an ISP. Once the ISP modem answers, a SLIP connection is established.

Point of using P-t-P is that a (relatively) secure connection is established
between two specific points.

We currently use ZMODEM over an async modem.  But, the other party is having
difficulty with their phone system.  They feel a change is needed.  ZMODEM
provides the capability to transmit and receive files.  Difference between
ZMODEM and P-t-P connection is that standard FTP can be used, and the
connection is a direct connection.  I would think this would be slightly more
secure than a straight, unencrypted FTP connection, as the route is more
direct.

In looking at the setup, it appears that at a minimum, a controller
description
would be required as that would be the mechanism where the disliag process
would be initiated.

With ZMODEM, a line/controller/device is also created.  The actual dialing
process is controlled by commands within ZMODEM, specifically, the DIAL
command.  With a P-t-P connection the dialing (has to be a more modern
word) is
initiated when the configuration items are varied on.

With a P-t-P connection, the default route is NOT the standard gateway,
but the
dialup connection.

At least, that is my understanding.

John McKee

Quoting Scott Klement <midrange-l@xxxxxxxxxxxxxxxx>:

>
>> What are commands needed to establish a Point-to-Point FTP connection?
>
> Do you mean a point-to-point TCP/IP connection?  in other words, SLIP or
> PPP?  Or do you mean something like PPTP?  Or PPoE?
>
> FTP is just a program that runs over TCP/IP.  It doesn't matter whether
> that TCP connection was established via SLIP/PPP, or whether it uses any
> of the hundreds of other ways of establishing a TCP/IP connection.
> (Etherhet, Token Ring, FDDI, ISDN, etc, etc, etc.)  FTP doesn't know or
> care which underlying physical media is used to transport the TCP/IP
> packets. It just uses TCP/IP.  Let the operating system worry about how to
> transport the packets!
>
> This is true of all TCP/IP software, of which FTP is only one.  Others
> (TELNET, E-MAIL, WEB, etc, etc) will also work over the same PTP
> connection.
>
>> I am assuming that a line description. controller, and device
>> description are needed and must be manually created before ADDTCPPTP can
>> be used.  The iSeries already has functioning access to the internet.
>
> I'm lost.  If you already have internet access, why do you need a
> point-to-point connection?
>
>
>> Not sure where to look for the answers and appreciate all assistance.
>>
>
> A quick Google search found this:
> http://tinyurl.com/35bun8
>
> It has lots of links to information about configuring and troublehsooting
> SLIP and PPP.  Of course, I'm not exactly sure if that's what you're
> looking for...
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