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While FIPS is enabled on Data ONTAP 9.0+, users are unable to SSH into the cluster or node

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ontap-9
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nas
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Applies to

  • ONTAP 9.0 and above
  • FIPS is enabled (true)

Issue

On Data ONTAP 9.0 or above, SSH via putty no longer works to the cluster or node when FIPS is enabled. When attempting to SSH one of the following errors are received:

"Couldn't agree a host key algorithm (available: ecdsa-sha2-nistp256)."
"Couldn't agree a hostkey algorithm (available: )"
"Error message: Unable to negotiate with <IP_address> port 22: no matching host key type found.

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