Hey Dieter,

for the Hot Rod client, set the protocol on the SSL configuration:

ConfigurationBuilder builder = new ConfigurationBuilder()
builder.security().ssl().protocol("TLSv1.2");;

If you are using a properties configuration file:

infinispan.client.hotrod.ssl_protocol=TLSv1.2

For the server, set this on the ssl engine element:

<security-realms>
     <security-realm name="ApplicationRealm">
          <server-identities>
               <ssl>
                    <engine enabled-protocols="TLSv1.2"/>
                    <keystore .../>
               </ssl>
          </server-identities>
     </security-realm>
</security-realms>

If you wish, you can also specify which ciphers you want to enable by adding an 'enabled-cipher-suites' attribute on the engine element.