Re: PING and FTP question -- MIDRANGE-L


Rob,

Using ping with an ICMP message is not really going to tell you that everything is working, unless you have control of both systems and all the firewalls, and routers between them. This is because many network people, (including me) block and drop ICMP traffic to prevent denial of service attacks, probes, and other abuse transactions from processing.

If you MUST know that the host is alive and the FTP demon (program) is active an excepting connections then I would suggest developing either your own code to connect and open an FTP connection, or modify this to use two scripts, the first to do a connect an LS (dir) of some file to validate connectivity and the second to transfer your data. . Either the custom Application, or check FTP session which ever way you go, should replace your verify at line 9..

         Good Luck,
        JMS..

At 05:01 PM 9/29/2004, you wrote:

Hi esteemed and knowledgeable list.

0009.00              VFYTCPCNN  RMTSYS(&FTPADDR) MSGMODE(*QUIET *ESCAPE)


0013.00              FTP        RMTSYS(&FTPADDR)


With reference to the above code: line 9 gives the TCP3210 error  -
Connection verification statistics: 0 of 5 successful (0 %).
And yet line 13 connects.
What is going on here?  I need to find out if the remote system is available
before the FTP session starts.  Can anyone please shed any light on this?

Thanks.


Thank you.
Rob Joubert
(Information Systems)
Warnaco Swimwear Group


Jeffrey Silberberg
CompuDesigns, Inc.
Atlanta, GA. 30350

As soon as I know the answers
They change the questions !

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