以下是一段连接到本地防火墙并转储所有打开的防火墙端口的 PowerShell 代码：
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| $firewall = New-object -ComObject HNetCfg.FwPolicy2
$firewall.Rules | Where-Object {$_.Action -eq 0} |
Select-Object Name, ApplicationName,LocalPorts
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结果看起来类似这样：
Name ApplicationName LocalPorts
---- --------------- ----------
pluginhost.exe C:\users\tobwe\appdata\local\skypeplugin\pluginhost.exe *
pluginhost.exe C:\users\tobwe\appdata\local\skypeplugin\pluginhost.exe *
spotify.exe C:\users\tobwe\appdata\roaming\spotify\spotify.exe *
spotify.exe C:\users\tobwe\appdata\roaming\spotify\spotify.exe *
在 Windows 10 和 Server 2016 中，有一系列现成的跟防火墙有关的 cmdlet：
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| PS> Get-Command -Noun *Firewall*
CommandType Name Version Source
----------- ---- ------- ------
Function Copy-NetFirewallRule 2.0.0.0 NetSecurity
Function Disable-NetFirewallRule 2.0.0.0 NetSecurity
Function Enable-NetFirewallRule 2.0.0.0 NetSecurity
Function Get-NetFirewallAddressFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallApplicationFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallInterfaceFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallInterfaceTypeFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallPortFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallProfile 2.0.0.0 NetSecurity
Function Get-NetFirewallRule 2.0.0.0 NetSecurity
Function Get-NetFirewallSecurityFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallServiceFilter 2.0.0.0 NetSecurity
Function Get-NetFirewallSetting 2.0.0.0 NetSecurity
Function New-NetFirewallRule 2.0.0.0 NetSecurity
Function Remove-NetFirewallRule 2.0.0.0 NetSecurity
Function Rename-NetFirewallRule 2.0.0.0 NetSecurity
Function Set-NetFirewallAddressFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallApplicationFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallInterfaceFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallInterfaceTypeFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallPortFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallProfile 2.0.0.0 NetSecurity
Function Set-NetFirewallRule 2.0.0.0 NetSecurity
Function Set-NetFirewallSecurityFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallServiceFilter 2.0.0.0 NetSecurity
Function Set-NetFirewallSetting 2.0.0.0 NetSecurity
Function Show-NetFirewallRule 2.0.0.0 NetSecurity
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