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1. Open the file /opt/IBM/InformationServer/ASBNode/eclipse/plugins/com.ibm.iis.client/iis.client.site.properties for editing.

2. Replace com.ibm.iis.ssl.protocol=SSL_TLSv2 with com.ibm.iis.ssl.protocol=TLSv1.2

   

3. Save the edited file and restart the MettleCI Workbench service

Explanation

Workbench connects to DataStage using IBM's com.ibm.iis.client Java library.  However, this library relies on IBM-specific security extensions which are old, insecure, and introduce issues with HTTPS security features in the server/clients upon which the MettleCI Workbench rely.  Workbench handles the inconsistencies inherent in com.ibm.iis.client to make it compatible with modern Java distributions, such as the recommended OpenJDK distribution. 

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