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      <title>Windows Docker 端口幽灵映射排查：EMQX 1883 被 WinNAT 静默保留的复盘</title>
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      <pubDate>Tue, 25 Aug 2026 12:00:00 +0800</pubDate>
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      <description>Windows 开发机 Docker Desktop 完整服务栈（backend + EMQX 5.8.9 + TimescaleDB + Valkey），后端 ping/pong 正常但 mosquitto_pub 持续 Connection refused。docker ps 中同栈其他端口正常映射，唯独 1883 缺 0.0.0.0:1883-&amp;gt; 前缀且不报错，根因为 Hyper-V/WinNAT 动态端口保留圈占 1883（落在 1802–1901 区间）。给出换端口/临时夺回/白名单/修正动态端口范围四级修复方案。</description>
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