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        <title>Operating System - 標籤 - Yan-Hao Wang&#39;s Blog</title>
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    <title>FreeBDS Mandatory Access Control 框架簡介</title>
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    <author>bses30074@gmail.com (Yan-Hao Wang)</author>
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<p>最常見預設在 UNIX-like system 上面的安全模形是 DAC (Discretionary Access Control)，讓檔案擁有者決定權限。另外相對的 MAC (Mandatory Access Control) 安全模型，它讓系統管理原決定一個全系統的安全政策，在 MAC 安全模型下甚至 root 都不一定會有全部的權限。</p>]]></description>
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