Hi,
We are trying to enable TLS V1.2 support for a single virtualized outbound webservice. In order to achieve this, below change have been done on the mediator IS

Properties added under the extended settings
watt.net.jsse.client.enabledCipherSuiteList=default
watt.net.jsse.client.enabledProtocols=TLSv1,TLSv1.1,TLSv1.2
watt.net.jsse.server.enabledCipherSuiteList=default
watt.net.jsse.server.enabledProtocols=SSLv2Hello,TLSv1,TLSv1.1,TLSv1.2
watt.net.ssl.client.cipherSuiteList=default
watt.net.ssl.client.handshake.maxVersion=tls
watt.net.ssl.client.handshake.minVersion=tls
watt.net.ssl.client.hostnameverification=false
watt.net.ssl.client.strongcipheronly=true
watt.net.ssl.server.cipherSuiteList=default
watt.net.ssl.server.clientHandshakeTimeout=20000
watt.net.ssl.server.handshake.maxVersion=tls
watt.net.ssl.server.handshake.minVersion=tls
watt.net.ssl.server.strongcipheronly=false

Fix level of the server - IS_9.7_Core_Fix19

Code - While invoking the connector service, the useJSSE property is set to “yes”

Below is the error logged in the wrapper.log file, once we execute the transaction.
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): Starting handshake (iSaSiLk 3.03)…
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): Remote client:10.21.36.215:8443, Timestamp:Tue Nov 27 12:39:06 AST 2018
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): Sending secure renegotiation cipher suite
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): Sending v3 client_hello message, requesting version 3.1…
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): Received alert message: Alert Fatal: handshake failure
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): SSLException while handshaking: Peer sent alert: Alert Fatal: handshake failure
INFO | jvm 3 | 2018/11/27 12:39:06 | ssl_debug(1): Shutting down SSL layer…

As per the logs, the request is not going out using the TLS V1.2 and hence the same is failing.

Please Note: Same settings have been done on the IS and all non-virtualized outbound WS calls are working as expected.

Looking forward to your responses for resolving the issue.

Thanks & Regards,
Anwit Daityari