On Windows systems, port 445 handles local printer and file sharing traffic.

在Windows系统中，445端口用于处理本地打印机和文件分享流量。

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QNAP's new TS-x12 models are easy to attach to existing networks and provides easy file sharing within the network, centralized backup of all networked computers, website hosting, printer sharing, even recording of surveillance video from IP cameras.

ENGADGET: QNAP's new Turbo NAS line features iOS streaming via WiFi, 3G