Here is a piece of PowerShell code that connects to the local firewall and dumps the open firewall ports:
$firewall = New-object -ComObject HNetCfg.FwPolicy2 $firewall.Rules | Where-Object {$_.Action -eq 0} | Select-Object Name, ApplicationName,LocalPorts
The result may look similar to this:
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 *
In Windows 10 and Server 2016, there are finally a number of firewall-specific cmdlets out of the box, too:
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
