Windows查看TCP连接（netstat）
参考文章：windows查看TCP连接
netstat -ant -p TCP
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文章目录
Windows下的TCP连接查看：使用Netstat工具
网络统计（Netstat）是一个命令行工具，用于显示进入和离开本地计算机的网络连接。这种类型的信息对于网络故障排除、性能分析和防止未授权访问都非常有用。
1. Netstat简介
Netstat是一个在大多数现代操作系统中可用的命令行工具，包括Windows、Linux和macOS。它用于显示各种网络相关信息，如网络连接、路由表、接口统计等。
这个工具最初是UNIX操作系统的一部分，但现在也可以在Windows上使用。Windows版本的netstat工具提供了一组选项，使用户能够定制显示的输出。
2. 使用Netstat查看活动TCP连接
打开命令提示符窗口并输入netstat，即可列出所有活动TCP连接。以下是默认输出的样例：
Active Connections
Proto Local Address Foreign Address State
TCP 192.168.0.10:49152 db3msgr5011307:https ESTABLISHED
TCP 192.168.0.10:49153 a23-43-5-89:http CLOSE_WAIT
其中：
Proto列显示协议（TCP或UDP）。Local Address列显示本地计算机的IP地址和端口号。Foreign Address列显示远程计算机的IP地址和端口号。State列显示连接状态（例如，ESTABLISHED表示已建立连接，CLOSE_WAIT表示正在关闭连接）。
3. Netstat的参数
要查看更多详细信息，可以在netstat后面添加参数。以下是一些常用参数：
-a: 显示所有连接和监听端口。-b: 显示在创建每个连接或监听端口时涉及的可执行文件。-n: 以数字形式显示地址和端口号（而不是尝试确定名称）。-o: 显示关联的进程ID。
netstat -ano
4. 进程ID与TCP连接
当使用带有-o参数的netstat命令时，我们可以看到每个TCP连接对应的进程ID。为了确定哪个应用程序对应于该进程ID，我们需要使用Windows任务管理器。
5. 总结
总的来说，Netstat是一款强大且实用的工具，它可以帮助我们理解和诊断网络问题。通过使用不同的参数，我们可以根据需求定制Netstat的输出，从而获得有关网络连接的详细信息。
参考资料
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