add-firewall-rules.md

Script: add-firewall-rules.ps1

This PowerShell script adds firewall rules for the given executable. Administrator rights are required.

Parameters

PS> ./add-firewall-rules.ps1 [[-PathToExecutables] <String>] [[-Direction] <String>] [[-FirewallProfile] <Array>] [<CommonParameters>]

-PathToExecutables <String>
    Specifies the path to the executables.
    
    Required?                    false
    Position?                    1
    Default value                
    Accept pipeline input?       false
    Accept wildcard characters?  false

-Direction <String>
    Specifies the direction for the firewall rule. Can be 'Inbound' or 'Outbound'. Default is 'Inbound'.
    
    Required?                    false
    Position?                    2
    Default value                Inbound
    Accept pipeline input?       false
    Accept wildcard characters?  false

-FirewallProfile <Array>
    
    Required?                    false
    Position?                    3
    Default value                @("Domain", "Private")
    Accept pipeline input?       false
    Accept wildcard characters?  false

[<CommonParameters>]
    This script supports the common parameters: Verbose, Debug, ErrorAction, ErrorVariable, WarningAction, 
    WarningVariable, OutBuffer, PipelineVariable, and OutVariable.

Example

PS> ./add-firewall-rules.ps1 -PathToExecutables C:\MyApp\bin -Direction Outbound -Profile Private

Notes

Author: Markus Fleschutz | License: CC0

Related Links

https://github.com/fleschutz/PowerShell

Script Content

<#
.SYNOPSIS
	Adds firewall rules for executables (needs admin rights).
.DESCRIPTION
	This PowerShell script adds firewall rules for the given executable. Administrator rights are required.
.PARAMETER PathToExecutables
	Specifies the path to the executables.
.PARAMETER Direction
	Specifies the direction for the firewall rule. Can be 'Inbound' or 'Outbound'. Default is 'Inbound'.
.PARAMETER Profile 
	Specifies the firewall profile. Can be 'Domain', 'Private', or 'Public'. Multiple values can be specified as an array.
.EXAMPLE
	PS> ./add-firewall-rules.ps1 -PathToExecutables C:\MyApp\bin -Direction Outbound -Profile Private
.LINK
	https://github.com/fleschutz/PowerShell
.NOTES
	Author: Markus Fleschutz | License: CC0
#>

#Requires -RunAsAdministrator

param(
	[string]$PathToExecutables = "",
	[string]$Direction = "Inbound",
	[array]$FirewallProfile  = @("Domain", "Private")
)

try {
	if (-not $PathToExecutables) {
		$PathToExecutables = Read-Host "Enter path to executables"
	}

	$AbsPath = Convert-Path -Path $PathToExecutables
	$Executables = Get-ChildItem -Path $AbsPath -Filter "*.exe"

	if (-not $Executables) {
		Write-Warning "No executables found. No Firewall rules have been created."
		Read-Host "Press Enter to continue..."
		return
	}

	foreach ($exe in $Executables) {
		$exeName = $exe.Name
		$exeFullPath = $exe.FullName

		Write-Output "Adding firewall rule for $exeName"
		New-NetFirewallRule -DisplayName $exeName -Direction $Direction -Program $exeFullPath -Profile $FirewallProfile  -Action Allow
	}

	Write-Host -ForegroundColor Green "Done"
} catch {
	Write-Error "Error in line $($_.InvocationInfo.ScriptLineNumber): $($_.Exception.Message)"
}

(generated by convert-ps2md.ps1 using the comment-based help of add-firewall-rules.ps1 as of 05/19/2024 10:25:16)