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

是的,这是可能的。你不必是当前拥有套接字的进程来关闭它。考虑一下,远程计算机、网卡、网线和操作系统都可能导致套接字关闭。

还要考虑Fiddler和Desktop VPN软件可以将自己插入到网络堆栈中,并显示您的所有流量或重新路由所有流量。

所以你真正需要的是Windows提供一个API,直接允许这样做,或者有人写了一个程序,操作起来有点像VPN或Fiddler,并给你一种方法来关闭通过它的套接字。

至少有一个程序(CurrPorts)可以做到这一点,我今天用它来关闭在CurrPorts启动之前启动的进程上的特定套接字。当然,要做到这一点,您必须以管理员身份运行它。

Note that it is probably not easily possible to cause a program to not listen on a port (well, it is possible but that capability is referred to as a firewall...), but I don't think that was being asked here. I believe the question is "how do I selectively close one active connection (socket) to the port my program is listening on?". The wording of the question is a bit off because a port number for the undesired inbound client connection is given and it was referred to as "port" but it's pretty clear that it was a reference to that one socket and not the listening port.

其他回答

Wkillcx是一个可靠的Windows命令行工具,用于从前面没有提到的命令行删除TCP连接。不过,它有时确实会在连接大量的服务器上出现问题。我有时使用tcpview进行交互式kill,但wkillcx可以在脚本中使用。

打开cmd 输入netstat -a -n -o 找到TCP [IP地址]:[端口号]....#[target_PID]# (UDP同上) (顺便说一句,杀死[target_PID]没有为我工作) CTRL+ALT+DELETE,选择“启动任务管理器” 单击“进程”选项卡 打开“PID”列,方法如下:查看>选择列>选中“PID”复选框 找到感兴趣的PID和“END PROCESS” 现在您可以在[IP地址]:[端口号]上重新运行服务器,没有任何问题

是的,有可能关闭TCP或UDP端口,在DOS中有一个命令

TASKKILL /f /pid 1234 

我希望这对你有用

使用CurrPorts(免费且无需安装):http://www.nirsoft.net/utils/cports.html

/close <本端地址> <本端端口> <对端地址> <对端端口>{进程名}

例子:

# Close all connections with remote port 80 and remote address 192.168.1.10: 
/close * * 192.168.1.10 80
# Close all connections with remote port 80 (for all remote addresses): 
/close * * * 80
# Close all connections to remote address 192.168.20.30: 
/close * * 192.168.20.30 *
# Close all connections with local port 80: 
/close * 80 * *
# Close all connections of Firefox with remote port 80: 
/close * * * 80 firefox.exe

它还有一个很好的GUI,具有搜索和筛选功能。

注意:这个答案是huntharo和JasonXA的答案和评论组合在一起,并进行了简化,以方便读者阅读。例子来自CurrPorts的网页。

使用TCPView: http://technet.microsoft.com/en-us/sysinternals/bb897437.aspx 或CurrPorts: https://www.nirsoft.net/utils/cports.html

或者,如果你不想使用外部软件(顺便说一下,这些工具不需要安装),你可以简单地先运行netstat命令(最好是netstat -b),然后设置本地安全策略来阻止用户机器的IP地址,这就是我一直在做的不需要的甚至未知的连接-这允许你做任何事情没有任何外部软件(一切都是Windows附带的)…