如何通过windows命令行关闭TCP和UDP端口

有人知道如何通过windows命令行关闭单个连接的TCP或UDP套接字吗?

我在谷歌上搜索了一下，看到一些人也问了同样的问题。但是答案看起来像是netstat或netsh命令的手册页，重点关注如何监视端口。我不想要关于如何监控它们的答案(我已经这样做了)。我想干掉他们。

EDIT, for clarification: Let's say that my server listens TCP port 80. A client makes a connection and port 56789 is allocated for it. Then, I discover that this connection is undesired (e.g. this user is doing bad things, we asked them to stop but the connection didn't get dropped somewhere along the way). Normally, I would add a firewall to do the job, but this would take some time, and I was in an emergency situation. Killing the process that owns the connection is really a bad idea here because this would take down the server (all users would lose functionality when we just want to selectively and temporally drop this one connection).

当前回答

我找到了正确答案。尝试Sysinternals中的TCPView，现在由微软拥有。你可以在http://technet.microsoft.com/en-us/sysinternals/bb897437上找到它

2013-09-23 19:03:21

其他回答

尝试Sysinternals/Microsoft的工具TCPView (GUI)和Tcpvcon(命令行)。 https://learn.microsoft.com/en-us/sysinternals/downloads/tcpview

2012-04-26 19:23:08

如果你在Windows 8、Windows Server 2012或更高版本上运行，并安装了PowerShell v4以上版本，你可以使用下面的脚本。它会发现与端口相关的进程并终止它们(即终止进程及其连接;不仅仅是联系)。

Code

#which port do you want to kill
[int]$portOfInterest = 80

#fetch the process ids related to this port
[int[]]$processId = Get-NetTCPConnection -LocalPort $portOfInterest | 
    Select-Object -ExpandProperty OwningProcess -Unique | 
    Where-Object {$_ -gt 0} 

#kill those processes
Stop-Process -Id $processId

文档:

get - netttcpconnection - PowerShell的NetStat等效程序选择对象-从对象中拉回特定属性/删除重复项 Where-Object -根据某些条件筛选值 Stop-Process - PowerShell的TaskKill等效程序

2017-10-25 17:05:55

即时/可行/部分答案:https://stackoverflow.com/a/20130959/2584794 与前面使用netstat -a -o -n的答案不同，在没有使用这些端口的应用程序名称的情况下，要查看非常长的列表

2013-11-21 20:20:52

我找到了正确答案。尝试Sysinternals中的TCPView，现在由微软拥有。你可以在http://technet.microsoft.com/en-us/sysinternals/bb897437上找到它

2013-09-23 19:03:21

如果你知道你想要删除的特定端口，只需以admin的身份打开命令提示符(在windows上)，然后:

NPX kill-port 1900

以上1900是我箱子的端口号。当我想关闭React-Native开发工具(和Expo)正在运行的端口时，我经常使用这个方法。原因是即使关闭了开发人员窗口或停止了服务器，端口仍然在使用中。

2022-01-21 10:21:55

如何通过windows命令行关闭TCP和UDP端口

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