80端口被SYSTEM (PID 4)占用，这是什么?

我试图为我的应用服务器使用端口80，但当我执行netstat -aon时，我得到:

TCP 0.0.0.0:80 0.0.0.0:0监听4

当我在任务管理器中查找进程时，它显示PID 4是SYSTEM，就是这样。没有扩展…什么都没有。“系统”。这是怎么回事?

我害怕结束这个过程，我该怎么办?

当前回答

以编程方式标识流程

到目前为止，所有的答案都要求用户进行一些交互操作。这就是当netstat显示PID 4时如何找到PID，而不需要打开一些GUI或处理有关依赖服务的对话。

$Uri = "http://127.0.0.1:8989"    # for example


# Shows processes that have registered URLs with HTTP.sys
$QueueText = netsh http show servicestate view=requestq verbose=yes | Out-String

# Break into text chunks; discard the header
$Queues    = $QueueText -split '(?<=\n)(?=Request queue name)' | Select-Object -Skip 1

# Find the chunk for the request queue listening on your URI
$Queue     = @($Queues) -match [regex]::Escape($Uri -replace '/$')


if ($Queue.Count -eq 1)
{
    # Will be null if could not pick out exactly one PID
    $ProcessId = [string]$Queue -replace '(?s).*Process IDs:\s+' -replace '(?s)\s.*' -as [int]

    if ($ProcessId)
    {
        Write-Verbose "Identified process $ProcessId as the HTTP listener. Killing..."
        Stop-Process -Id $ProcessId -Confirm
    }
}

那可真让我受不了。我讨厌HttpListener，希望我只使用Pode。

2021-01-22 21:14:00

其他回答

这些对我都没用。我不得不回答一个超级用户的问题。

If it is a System Process—PID 4—you need to disable the HTTP.sys driver which is started on demand by another service, such as Windows Remote Management or Print Spooler on Windows 7 or 2008. There is two ways to disable it but the first one is safer: Go to device manager, select “show hidden devices” from menu/view, go to “Non-Plug and Play Driver”/HTTP, double click it to disable it (or set it to manual, some services depended on it). Reboot and use netstat -nao | find ":80" to check if 80 is still used.

这招对我很管用!

2014-03-13 20:48:36

对我来说，我必须在我的虚拟机上卸载“Citrix虚拟桌面代理”

2014-01-17 19:22:51

尝试netstat -b，这可能会对情况有所帮助(显示什么.exe正在使用端口)。祝你好运。

2009-09-15 23:27:08

我发现“SQL Server Reporting Services (MSSQLSERVER)”自动启动并在端口80上监听。

我希望这能有所帮助。

2015-01-20 14:55:58

IP地址为0.0.0.0,state = LISTENING:表示80端口正在监听所有接口(未被使用)

如何读取NETSTAT -AN结果:

https://sites.google.com/site/xiangyangsite/home/technical-tips/linux-unix/networks-related-commands-on-linux/how-to-read-netstat--an-results