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【CompTIA Security+対策】頻出認証方式まとめ(PSK vs SAE vs 802.1X)

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🔐 無線LANの認証方式まとめ(PSK vs SAE vs 802.1X)

認証方式 対応規格 概要 セキュリティ 主な用途
PSK(Pre-Shared Key) WPA / WPA2-Personal 共通パスワードを使うシンプルな方式。 ★★☆☆☆ 家庭用Wi-Fi
SAE(Simultaneous Authentication of Equals) WPA3-Personal パスワードを直接送らず、Diffie-Hellmanで安全に鍵共有。 ★★★★☆ 個人・中小企業
802.1X / EAP WPA2/WPA3-Enterprise 証明書やRADIUSでユーザーごとに認証。 ★★★★★ 企業・大学など

💬 覚え方

  • PSK=みんな同じパス
  • SAE=賢く安全に共通鍵生成(WPA3)
  • 802.1X=社員証ログイン(企業向け)
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