端口扫描技术是网络安全扫描技术的重要技术之一。

Port-Scanning Technology is one of the most important technologies of the safe scanning on internet.

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全文对TCP建立连接的原理，WINSOCK原理，端口扫描技术的基本原理和扫描方式都进行了比较详细的介绍。

The full text explain in detail with principle of the TCP connection, principle of the WINSOCK, the basic principle of the port scan and the scan method .

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然后，介绍了现阶段安全扫描软件所采用的安全扫描技术，介绍了远程操作系统识别技术、端口扫描技术，并分析研究了基于插件的漏洞扫描技术。

Then, we introduced the technology of network security detection in common secure scanner including the remote OS detection, port scanning and vulnerability scanning based on using plug-in.

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