When, in the node configuration, discovery is enabled, no default port is specified and no connection strategy is specified, the node uses by default 11143 for the server port when SSL is disabled, and 11111 if SSL is enabled. It shoulld be the opposite: 11111 with SSL disabled and 11143 with SSL enabled.

I could track the issue in the code of org.jppf.node.connection.JPPFDefaultConnectionStrategy, in method connectionFromManualConfiguration() there is this line:

int port = config.getInt("jppf.server.port", ssl ? 11111 : 11143);

this is incorrect, the fix is to modify it as follows:

int port = config.getInt("jppf.server.port", ssl ? 11143 : 11111);