Disable SSH weak ciphers/algorithms on OpenShift 4.12 or older

Solution Verified - Updated -

Issue

  • Security requirements impose disabling weak ciphers in the SSH server on the OCP 4 cluster.
  • Security requirements impose disabling weak key exchange algorithms in the SSH server on the OpenShift 4 cluster.
  • OpenShift 4 cluster requires specific customization of the SSH server.

Environment

  • Red Hat OpenShift Container Platform (RHOCP)
    • 4.12 or older versions
  • SSH

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