Don,
Below are my notes, disabling SSLv2, SSLv3, TLSV1.
IBM has released two PTFs to resolve SSL client issues, MF60335, SI57332
http://www-01.ibm.com/support/docview.wss?uid=nas35a3400efeeb413d086257e7e007eb665
http://www-01.ibm.com/support/docview.wss?uid=nas24e5145dca463e43586257e6f003c6da7
http://www-912.ibm.com/a_dir/as4ptf.nsf/b3cb9d42f672b70f86256739004afa0f/9d8f3c581309ec3886257e7e007eb678?OpenDocument
http://www-01.ibm.com/support/docview.wss?uid=nas22105ec3f6fa1476986257e74003c6ed6
Applied to both Production and R&D LPAR, issue resolved.
Make sure you run the special instructions SST Advanced Analysis SSLCONFIG MACRO. !!!!!!
1. Open a character-based interface.
2. On the command line, type STRSST.
3. Type your service tools user name and password.
4. Select option 1 (Start a service tool).
5. Select option 4 (Display/Alter/Dump).
6. Select option 1 (Display/Alter storage).
7. Select option 2 (Licensed Internal Code (LIC) data).
8. Select option 14 (Advanced analysis).
9. Select option 1 (SSLCONFIG).
10. Enter -h
-eligibleDefaultProtocols:10,08,04 or as needed.
If your iSeries is a client, get these two PTFs installed ASAP.
Note:!!!!!!
Not only was my SSL client connection issue resolved, but other apps previously connecting at TLSv1 are now connecting at TLSv1.2 or TLSv1.1.
Also, another app previously connecting TLSv1.0 using RC4 weak cipher now connecting at TLSv1.2 with TLS_RSA_WITH_AES_128_CBC_SHA2
Paul
-----Original Message-----
From: MIDRANGE-L [mailto:midrange-l-bounces@xxxxxxxxxxxx] On Behalf Of Don Brown
Sent: Thursday, August 18, 2016 1:52 AM
To: Midrange Systems Technical Discussion
Subject: (GSKit) No compatible cipher suite available between SSL end points.
Hi All,
I really thought I could sort this out without help but ...
Would really appreciate any suggestions.
We are on V7R1 and fairly up to date on PTF's
I have updated system value QSSLPCL to have the following values;
*TLSV1.2
*TLSV1.1
*TLSV1
*SSLV3
I have updated to HTTPAPI V1.32
A secure gateway we use has advised they are updating their security - they advised ...
• The SSL security certificate version will be upgraded to SHA-256 hashing algorithm • Only Transport Layer 1.1 and 1.2 protocols to be accepted. (any previous versions will not be accepted) • Updates to accepted Ciphers:
AES256-GCM-SHA384:
AES128-GCM-SHA256:
ECDHE-RSA-AES256-GCM-SHA384:
ECDHE-RSA-AES128-GCM-SHA256:
ECDHE-RSA-AES256-SHA384:
ECDHE-RSA-AES256-CBC-SHA:
ECDHE-RSA-AES128-SHA256:
ECDHE-RSA-AES128-CBC-SHA
I have exported the Root and intermediate certificates from the site and loaded into DCM successfully
The debug.txt shows the error.
HTTPAPI Ver 1.32 released 2016-02-10
NTLM Ver 1.4.0 released 2014-12-22
OS/400 Ver V7R1M0
http_persist_open(): entered
http_long_ParseURL(): entered
DNS resolver retrans: 2
DNS resolver retry : 2
DNS resolver options: x'00000136'
DNS default domain: MSD.local
DNS server found: 10.1.1.31
DNS server found: 139.130.4.4
Nagle's algorithm (TCP_NODELAY) disabled.
SNI hostname set to: test.securepay.com.au
(GSKit) No compatible cipher suite available between SSL end points.
ssl_error(402): (GSKit) No compatible cipher suite available between SSL end points.
SetError() #30: SSL Handshake: (GSKit) No compatible cipher suite available between SSL end poin
The list of cyphers does not match the knowledge centre reference for 7.1
- I have
*RSA_AES_128_CBC_SHA256
*RSA_AES_128_CBC_SHA
*RSA_RC4_128_SHA
*RSA_RC4_128_MD5
*RSA_AES_256_CBC_SHA256
*RSA_AES_256_CBC_SHA
*RSA_3DES_EDE_CBC_SHA
*RSA_DES_CBC_SHA
*RSA_EXPORT_RC4_40_MD5
*RSA_EXPORT_RC2_CBC_40_MD5
*RSA_NULL_SHA256
*RSA_NULL_SHA
*RSA_NULL_MD5
Thank you for any assistance
Don Brown
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