9. Implement secure communication between nodes and between nodes and applications. To do this, you'll need an SSL/TLS implementation that protects all network communications rather than just a subset. Some Hadoop providers, like Cloudera, already do this, as do many cloud providers. If your setup doesn't have this capability, you'll need to integrate the services into your application stack.
Thor Olavsrud covers IT Security, Big Data, Open Source, Microsoft Tools and Servers for CIO.com. Follow Thor on Twitter @ThorOlavsrud. Follow everything from CIO.com on Twitter @CIOonline and on Facebook. Email Thor at firstname.lastname@example.org
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