We have been using plain old FTP to IBM (downloading enhanced hold data)
for quite a while now and in the last week or so, we had to convert to
using FTPS (TLS 1.2).   So to me, it appears IBM made a change and now
requires a secure connection.   Yes, I know we can use SMPE RECEIVE ORDER,
and we do but we had a STEP in one of our jobs that used the old way.

On Mon, Feb 27, 2023 at 6:24 PM Charles Mills <charl...@mcn.org> wrote:

> FWIW what you show is in conflict with what Paul Gorlinsky wrote: that IBM
> did not support FTPS.
>
> (I'm not trying to pick a fight. I have reasons for wanting to get FTPS to
> work.)
>
> I see that you are using AT-TLS and that is goodness of course but it
> should not make a huge difference bottom line. I wonder why mine is failing.
>
> At least I know the problem is not V2R5. That's a help.
>
> Charles
>
>
> -----Original Message-----
> From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On
> Behalf Of Ed Jaffe
> Sent: Monday, February 27, 2023 10:38 AM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: Can you connect to the PTF download site with z/OS FTP?
>
> On 2/27/2023 9:32 AM, Charles Mills wrote:
> >
> > Starting I think with V2R5 you need AT-TLS for the FTP server, and for
> TLS 1.3 (only) on the client.
>
> Don't know about TLS 1.3 (we don't use that yet), but it clearly still
> supports TLS 1.2. See below:
>
> EZA1450I IBM FTP CS V2R5
> EZA1466I FTP: using TCPIP
> EZA1456I Connect to ?
> EZA1736I public.dhe.ibm.com
> EZYFT18I Using catalog '/usr/lib/nls/msg/C/ftpdmsg.cat' for FTP messages.
> EZA1554I Connecting to: public.southdata.ibm.com 170.225.126.18 port: 21.
> 220-**********************************************************************
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> 220 ProFTPD Server (proftpd) [170.225.126.18]
> FC0296 ftpAuth: security values: mech=TLS, tlsmech=ATTLS, tlsreuse=N,
> sFTP=A, sCC=C, sDC=P
> FC2975 ftpAuthAttls: AT-TLS policy set as application controlled.
> FU2420 TTLSRule: PSI_FTP-Client~1
> FU2426 TTLSGroupAction: gAct1
> FU2432 TTLSEnvironmentAction: eAct1~FTP_Clients
> FU2439 TTLSConnectionACtion: cAct1~FTP_Clients EZA1701I >>> AUTH TLS
> 234 AUTH TLS successful
> FC3144 authServerAttls: Start Handshake
> FC3175 authServerAttls: FIPS140 not enabled
> FC3212 authServerAttls: Using TLSv1.2 protocol
> FC3230 authServerAttls: SSL cipher: 002F
> FU2135 getCtrlConnCertAttls: Request certificate, size 1751
> FU2755 getSessionIdAttls: Issuing SIOCTTLSCTL to get decoded AT-TLS
> Session ID EZA2895I Authentication negotiation succeeded
>
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-- 
Michael Babcock
OneMain Financial
z/OS Systems Programmer, Lead

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