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    <title>今日学んだこと on Ixonae on Security</title>
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      <title>今日学んだこと：DNS認証局認可（CAA）フィールドの存在</title>
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      <pubDate>Tue, 20 Jun 2023 10:15:07 +0000</pubDate>
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      <description>今日はCAA DNSエントリとは何か、そしてSSL証明書の誤発行を防ぐのにどう役立つかを学ぶ</description>
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      <title>今日学んだこと：FIDO U2Fセキュリティキーの仕組み</title>
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      <pubDate>Tue, 17 Jan 2023 04:15:07 +0000</pubDate>
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      <description>この記事では、YubikeyなどのFIDO U2Fセキュリティキーの仕組みと、タッチするだけで二要素認証ができる理由を解説する</description>
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      <title>今日学んだこと：NAT64とDNS64</title>
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      <pubDate>Sun, 08 Jan 2023 08:19:24 +0000</pubDate>
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      <description>今日学んだこと：NAT64とDNS64を使えば、IPv6のみのネットワークからIPv4のみのネットワークと通信できる。IPv4アドレスはCIDR 64:ff9b::/96に変換される</description>
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