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  3. January 2013

RE: Ftping large files w/o timing out

Thanks Vern
....I had already tried changing those values to 3 hours
....that didn't help, other than taking it longer to time out
..........it still timed out in about an hour
.....so my final conclusion was that it had to be the firewalls causing the
problem
.....and changing to PASV mode seemed to handle that

These are the values I had already tried

QUOTE TIME 10800 10800
DEBUG T1 10800
DEBUG T2 10800

Terry Nonamaker


-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Vernon Hamberg
Sent: Monday, January 28, 2013 10:19 AM
To: Midrange Systems Technical Discussion
Subject: Re: Ftping large files w/o timing out

Hi Terry

I think I published something on this a while ago - here's a link to a
thread elsewhere that quotes some of what I wrote - so far as I can tell,
anyhow!!

http://www.iprodeveloper.com/forums/aft/60001

Maybe it'll help - it mentions the DEBUG subcommand, which has some
possibilities here, too.

Vern

On 1/28/2013 12:07 PM, Terry Nonamaker wrote:
I am not an ftp guru
.....I can only tell you this works for me ..........another company
we are working closely with has the exact same problem .....and
apparently several others

And obviously enough that it needed an article written about it
..................which describes my problem exactly .....and there
are others articles that lead me to this one .....it is an industry
wide occurrence whether iSeries or not

If something else solved the issue
.....why did it work when I changed this and only this .....I had
already tried changing timeout values and activity timers .....that
did not work

If yours works for you
.....that's great
.....this works for me

Terry Nonamaker

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Tim Bronski
Sent: Monday, January 28, 2013 9:32 AM
To: Midrange Systems Technical Discussion
Subject: Re: Ftping large files w/o timing out

That's where I don't see the PASV/EPSV being relevant. The doc you
sent me describes a problem that's relevant to establishing data
connections.
Once a data connection is made then it's irrelevant which command was
used.
So, if you're able to create a connection and send a file then
whichever passive command you used works. The issue with large files
is due to timeouts on the control connection when the transfer on the
data connection takes too long. Perhaps something else solved the issue.

On 1/28/2013 6:09 PM, Terry Nonamaker wrote:
Only when sending very large files
... in this case, one file that is 4.9gb and another that is 13.4gb
... otherwise, there is no problems

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Jeff Young
Sent: Monday, January 28, 2013 8:47 AM
To: Midrange Systems Technical Discussion
Subject: Re: Ftping large files w/o timing out

Terry,
I this only an issue when sending very large files, or an issue in
general when this condition occurs?

Thanks,


On Mon, Jan 28, 2013 at 11:21 AM, Terry Nonamaker <
TNonamaker@xxxxxxxxxxxxxxxx> wrote:

So, attaching a document did not go so well .....so here's the info


IBM - Disabling EPASV/EPORT in the iSeries FTP Client at R610 and
above

www-01.ibm.com/support/docview.wss?uid=nas1dace92df240295dc8625742500
5
65275
1/2

Technote
At R610, the iSeries FTP client supports the EPASV (Extended
Passive,
EPSV) command and EPORT (Extended Port, EPRT). The FTP client
defaults to this and, if the server we are connecting to does not,
the FTP client will fail over to Passive mode FTP. However, in some
cases, an
error
message is not returned. Most commonly, this is due to a firewall
not allowing or supporting the EPASV /EPORT command, and the
establishment of a data connection will appear to 'hang' with:

229 Entering Extended Passive Mode

In these cases, the EPASV/EPORT commands must be disabled.
The FTP client attempts data connections in the following manner:
Extended Passive
Passive
Extended Port
Port

As a result, if PORT mode is needed, the three preceding data
connection types must first be toggled off. This can be done in one
of
two ways:
1. On a connection-by-connection basis using FTP client subcommands:
o SENDEPSV - Toggles Extended passive o SENDPASV - Toggles Passive
mode o SENDEPRT - Toggles Extended Port

Note: The data connection type can also be set (regardless of what
the default behavior is) by using the 0 or 1 switches with the above
3 commands. For instance:
SENDEPSV 1 - would toggle extended passive on SENDEPSV 0 - would
toggle extended passive off

2. On a system-wide basis with the use of data areas:
o CRTDTAARA DTAARA(QUSRSYS/QTMFTPEPSV) TYPE(*LGL)
AUT(*USE) - disables EPASV
o CRTDTAARA DTAARA(QUSRSYS/QTMFTPPASV) TYPE(*LGL)
AUT(*USE) - disables PASV
o CRTDTAARA DTAARA(QUSRSYS/QTMFTPEPRT) TYPE(*LGL)
AUT(*USE) - disables EPO RT with PTF SI33243 applied to the

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Terry
Nonamaker
Sent: Monday, January 28, 2013 8:02 AM
To: 'Midrange Systems Technical Discussion'
Subject: RE: Ftping large files w/o timing out

This is the IBM document I based it on ....sounds like my problem to
me ....and, as I said before, it now works just fine

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Tim Bronski
Sent: Monday, January 28, 2013 7:58 AM
To: Midrange Systems Technical Discussion
Subject: Re: Ftping large files w/o timing out

Well that's good...but it doesn't make sense unless we're talking
about a different problem than the one i assumed. PASV or EPSV set
up the data connection (EPSV is really just the ipv6 version of pasv).
Once the data connection is in place it doesn't matter which one was
used. If the
problem
was in establishing a data connection for a transfer then I can see
how perhaps the firewall had an issue but after that...

But hey, if it's working...

On 1/28/2013 4:46 PM, Terry Nonamaker wrote:
Switching to PASV mode did make all the difference ......it totally
works now

The EPSV has problems with firewalls .....PASV does not .....it is
working just like I want it to

Thanks

Terry Nonamaker

-----Original Message-----
From: midrange-l-bounces@xxxxxxxxxxxx
[mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Tim Bronski
Sent: Saturday, January 26, 2013 7:00 AM
To: Midrange Systems Technical Discussion
Subject: Re: Ftping large files w/o timing out

If the timeout is happening after it has been sending for a while
then I don't see any reason why a switch from EPSV to PASV would
have any effect whatsoever.

But, I had discovered in another post about using passive mode
(PASV) ......as opposed to the default of ... extended passive
mode
(EPSV)

That seems to do the trick
....it does not have issues with the firewall now ....no time out
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Need secure FTP? Forget PASE...get your FREE sFTP here
www.arpeggiosoftware.com
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