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RPC accept GSS token procedure failed (Decrypt integrity check failed)

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9
  • NFS
  • Kerberos

Issue

  • EMS:
Sat Jun 01 23:48:16 +0200 [node-01: secd: secd.nfsAuth.problem:error]: vserver (svm1) General NFS authorization problem. Error: RPC accept GSS token procedure failed   [  0 ms] Using the NFS service credential for logical interface 1048 (SPN='nfs/svm1.domain.com@DOMAIN.COM') from cache. **[     0] FAILURE: Failed to accept the context: Unspecified GSS failure.  Minor code may provide more information (minor: Decrypt integrity check failed). 
  • Packet traces revealed a single client sending continuously RPSEC_GSS_INIT trying to authenticate to the NFS server

74   2022-05-11 11:26:08.327805   xxx.xxx.xxx.xxx   xxx.xxx.xxx.xxx   NFS   RPCSEC_GSS_INIT   V4 NULL Call
75   2022-05-11 11:26:08.328866   xxx.xxx.xxx.xxx   xxx.xxx.xxx.xxx   NFS                     V4 NULL Reply

  • The reply from the server contains the errors as seen in the EMS logs

Frame 75:
...
Network File System
    [Program Version: 4]
    [V4 Procedure: NULL (0)]
    GSS Context
    GSS Major Status: 851968
    GSS Minor Status: 2529638943
    GSS Sequence Window: 128
    GSS Token: 00000000

Note: Decrypt integrity check failed

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