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Why is NTLM Authentication used instead of Kerberos for clients in different domain?

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ontap-9
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nas
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Applies to

  • ONTAP 9
  • CIFS

Answer

  • The authentication method is chosen by the client when initiating access.
  • When the client and the CIFS server belong to different domains, the client cannot obtain a Kerberos ticket. 
  • Therefore, using NTLM authentication in this scenario is expected behavior.

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