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Why are there access denied errors in a security/packet trace for successful access?

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ontap-9
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nas
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Applies to

  • ONTAP 9
  • CIFS/SMB
  • Microsoft Windows Client

Answer

  • Windows client attempts to open a file (via CREATE) with certain flags (Access Mask) then the server allows or denies the request based on the permission.
  • Some application like (MS Office) tries the CREATE call with more permissions and gradually decrease the Access Mask in case of Access Denied response until access is granted.
  • This whole procedure is usually very quick and the user might not notice any impact but a packet trace or a security trace will show the calls as Access Denied.

Additional Information

 

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