So one of our system programmers found an alternative to using AT-TLS to enable
use of TLS v1.2 with the z/OS FTP client. All you have to do is set an LE
environment variable GSK_PROTOCOL_TLSV1_2=1. Since the default (non ATTLS)
SSL/TLS for FTP uses z/OS System SSL it is affected by (I assume) all of the
"GSK environment variables" (see the "Environment variables" section of the
"z/OS Cryptographic Services System SSL Programming manual".)
In order to set this variable in a JCL environment you simply do the following:
//DOFTP EXEC PGM=FTP,PARM='your.ftps.server (EXIT'
//CEEOPTS DD *
ENVAR("GSK_PROTOCOL_TLSV1_2=1")
/*
Works like a charm! Wish it was more explicitly documented somewhere.
Frank
________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of
Frank Swarbrick <frank.swarbr...@outlook.com>
Sent: Tuesday, April 11, 2017 9:24 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: FTP TLS options
I'll pass that along to those in charge of such things. :-) Thanks.
________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of Tom
Conley <pinnc...@rochester.rr.com>
Sent: Monday, April 10, 2017 9:38 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: FTP TLS options
On 4/10/2017 7:04 PM, Frank Swarbrick wrote:
> I'm guessing there's a bit more to it than that, yes? Such as actually
> configuring Policy Agent?
>
Frank,
Sorry, thought you already configured PAGENT, but missed the PROFILE
member, like I did the first time I tried it. If you run z/OSMF, you
can config pagent.conf fairly easily with Configuration Assistant. If
not, you can try the samples in (WTW):
/usr/lpp/tcpip/samples/pagent_TTLS.conf
Good luck,
Tom Conley
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