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AES暗号化は有効ですが、RC4のみが表示されます

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ontap-9
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環境

  • ONTAP 9.11.1P6
  • Active Directory ( AD )
  • Domain Controller(DC;ドメイン コントローラ)
  • CIFS
  • Kerberos
  • Advanced Encryption Standard ( AES )

問題

  • AESが無効になっているか、再度有効になっています。  
  • aes256 ONTAPで使用されます
  • SECD.Log

Fri May 12 2023 11:51:36 +02:00 info : [krb5 context 08BBA000] Creating authenticator for <vserver>$@DOMAIN.DC-AD -> cifs/dcserver.01.dc-ad@, seqnum 681759282, subkey aes256-cts/9522, session key aes256-cts/F41E
Fri Fri May 12 2023 11:51:36 +02:00 debug: Adding new SMB2 session: serverName = dcserver.01.dc-ad, Uid = 251000707354133 { in AddNewSmb2SessionToGlobalSessionsMap() at src/FrameWork/ClientInfo.cpp:2665 }
Fri May 12 2023 11:51:36 +02:00 debug: SIGNING: Signing was negotiated { in LogOnUserExtBody() at src/Actions/ActionsONTAP.cpp:2669 }
Fri May 12 2023 11:51:36 +02:00 info : Successfully authenticated with DC dcserver.01.dc-ad { in connectToDomainController() at src/connection_manager/secd_connection.cpp:261 }

  • にのみ登録されたDCサーバのvServer RC4

PS H:\> Get-ADComputer <vserver> -properties *
...
KerberosEncryptionType : {RC4}
...
LastLogonDate : 16.05.2023 10:45:25
...
Modified : 16.05.2023 10:45:55
modifyTimeStamp : 16.05.2023 10:45:55
msDS-SupportedEncryptionTypes : 6
msDS-User-Account-Control-Computed : 0
Name : <vserver>
...
PasswordLastSet : 17.12.2019 12:56:01
...

 

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