RE: FTP commands over a VPN to an AS/400

["Gary Monnier" <gary.monnier@xxxxxxxxxxxxxxxxxx>]

Frank,

You definitely need to roll your own exit program(s), or look at PowerLock
NetworkSecurity or other similar product(s).

-----Original Message-----
From: midrange-l-admin@midrange.com
[mailto:midrange-l-admin@midrange.com]On Behalf Of Frank W. Kany IV
Sent: Wednesday, May 22, 2002 10:40 AM
To: midrange-l@midrange.com
Subject: Re: FTP commands over a VPN to an AS/400


Below is an example of how I deleted an object from a library from which I
am not supposed to have authority to.  We are concerned that a remote client
who is connected to our AS/400 might try to tamper with our system or start
snooping around simple by opening up an MS-DOS prompt on their PC.  Below is
an example of how I was able to delete an object using FTP from MS-DOS
prompt on my PC.

Is there a way to stop users from accessing the AS/400 using FTP from MS-DOS
prompt.

(MS-DOS Prompt)
C:\ftp 999.999.999.99
Connected to 999.999.999.99
220-QTCP at 999.999.999.99
220 Connection will close if idle more than 5 minutes.
User (999.999.999.99:(none)) : frank
331 Enter password.
Password:
230 FRANK logged on.
ftp> dir franktest
200 PORT subcommand request successful.
125 List started.
FRANK              315392 05/21/02 15:43:53 *FILE    FRANKTEST/BHFILES
FRANK                                             *MEM
FREANKTEST/BHFILES.BHFILES
250 List completed
ftp: 299 bytes received in 0.00Seconds 299000.00Kbytes/sec.
ftp> delete franktest/bhfiles
250 File BHFILES in library FRANKTEST deleted.
ftp> quit
221 QUIT subcommand received


----- Original Message -----
From: "Frank W. Kany IV" <frank.kany@burr-reid.org>
To: <midrange-l@midrange.com>
Sent: Wednesday, May 22, 2002 8:33 AM
Subject: FTP commands over a VPN to an AS/400 - (spelling corrections)


> This is a multi-part message in MIME format.
> --
> [ Picked text/plain from multipart/alternative ]
> A client of ours insists on encrypting a file and sending it via FTP
instead of emailing it.  We have never let a customer FTP into our AS/400
before.
>
> For test purposes, I played around with running FTP commands from my home
via a VPN to the AS/400 at work to test out how our client would get into
our system.  I was surprised to find out that when I added or deleted a file
from the system, there was no record or log of my activities when I was
signed on via FTP.
>
> Our company has to setup the VPN software on the client's PC to enable
them to FTP to our AS/400.
>
> Is there a way to keep track or log any kind of FTP commands or anything
done to the system while a customer is signed on via FTP?  Or, is there a
way to limit what a user can do while signed on via FTP?
>
> TIA,
>
> Frank
> --
>
>
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