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What is the impact of enforcing SMB signing?

  1. Last updated
    Jan 6, 2025
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Category:
ontap-9
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nas
Last Updated:
1/6/2025, 3:18:53 PM

Applies to

  • ONTAP 9
  • SMB

Answer

  • Enforcing SMB Signing has usually no negative impact as most/all current Windows OS versions likely already have the ability to sign
  • To confirm if any clients are NOT signing, the below command indicates false. 

::> vserver cifs session show -vserver SVM1 -fields is-session-signed

Note:  false indicates the client did not sign - it does not indicate it does not have the ability to sign.

Additional Information

  • Windows 11 Insider Preview Build25905 or later
  • Windows Server 2025 or later
  • Windows 11 Enterprise editions
  • Windows Server 2022
  • Windows 98
  • Windows 2000
  • Windows NT 4.0 
  • For other Operating Systems (e.g. Linux) mounting CIFS shares meant to enforce signing, test before changing configuration.

Note: For more detailed information, engage the OS Vendor.

 

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