These are the OpenSSL abbreviations for Elliptical Curve Diffie-Hellman and Diffie-Hellman Ephemeral but you probably didn't really need to know that. What you need to do is go to your system values QSSLCSL and see if you have a series of algorithms marked *ECDHE_xxx, more specifically this one:

On 9/4/2015 9:12 PM, Art Duarte wrote:
The group replied stating they are doing an EXPLICIT connection. This is the ciphersuite:

TLSCipherSuite AES128+EECDH:AES128+EDH

How does this translate into IBM i cipher suite?

Thank you
Art Duarte

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Chris Bipes
Sent: Thursday, September 3, 2015 12:33 PM
To: 'Midrange Systems Technical Discussion' <midrange-l@xxxxxxxxxxxx>
Subject: RE: FTPS Error

Seems like they are using *IMPLICIT on their SSL connection.

So you can connect, but the AUTHTLS command fails as they are using a cipher suite that you do not support. Call them and find out what cipher suites they support and make sure it is in your system value.

The following command on your iSeries should work:

Chris Bipes
Director of Information Services
CrossCheck, Inc.

-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Art Duarte
Sent: Thursday, September 03, 2015 10:08 AM
To: Midrange Systems Technical Discussion
Subject: RE: FTPS Error

Yes, Filezilla works fine with the info given.

Does not connect using telnet

I did the following command
open 21
Message received: Failed to connect

Also tried
telnet 21
Got a telnet window with message "220 FTP server ready"
I typed status, and got the 550 SSL/TLs required on the control channel

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