There is node-to-node encryption between the NonStop 10.2 and later the Windows Managing node.
The full FIPS mode introduced in Prognosis 11.x (which uses stronger encryption) though is not available.
To enable the encryption if you have not already you need to ensure a couple things are present in your NETWORK configuration.
1) This line, if present, needs to be explicitly commented out or removed.
FORCE-LEGACY-CONNECTIONS ()
2) This line, if present, needs to be explicitly commented out or removed.
ALLOW-LEGACY-CONNECTIONS
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Christopher R Souser - Solution Architect – MSci. PA, CISSP, ITIL.