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最初に TCP 経由でエラー ACK が返された SMB2 認証要求があるのはなぜですか。

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ontap-9
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nas<a>SMB 2</a><a>2009057303</a>
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環境

  • ONTAP 9
  • CIFS

回答

報告されるイベントは、通常のCIFS(SMB2)NTLM(v2)セッションセットアップ(認証)イベントです。

e23be95d-ee19-44b0-a05c-ae1a6708d8a1.png

ここで説明するのは

  • クライアント: Session Setup Request (NTLMSSP_NEGOTIATE) ⇔ サーバ: Session Setup Response (NTLMSSP_CHALLENGE): Error: STATUS_MORE_PROCESSING_REQUIRED (追加の認証情報を交換する必要があります:domain\user)
  • クライアント: ACK ⇔ サーバ: Session Setup Response
  • クライアント ::Session Setup Request (NTLMSSP_AUTH)ユーザ<domain\user> ⇔ サーバ: Session Setup Response

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