<# .SYNOPSIS Generates a PowerShell script to manage firewall rules for a specified port.

.DESCRIPTION This script generates another PowerShell script with the logic to either open or close a specified port in the firewall. The generated script accepts --open or --close parameters to perform the corresponding action on the port.

.PARAMETER Port The port number to manage. This parameter is required.

.EXAMPLE .\Generate-FirewallScript.ps1 -Port 9000 This will generate a script file named port-9000.ps1 which includes logic to open or close port 9000.

.NOTES File Name: Generate-FirewallScript.ps1 Author: [Your Name] Date: [Date] #>

Script Generator Function

function Generate-FirewallScript { param ( [string]$Port )

if (-not $Port) {
    Write-Host "Port parameter is required."
    return
}

$fileName = "port-$Port.ps1"

$scriptContent = @"

<# .SYNOPSIS Manages firewall rules for port $Port.

.DESCRIPTION This script allows you to open or close a specified port in the firewall. Use the --open parameter to allow the port or the --close parameter to remove the rules for the port.

.PARAMETER Open If specified, the script will open the port by allowing inbound and outbound traffic.

.PARAMETER Close If specified, the script will close the port by removing existing rules.

.EXAMPLE .\port-9000.ps1 -Open This will open port 9000 by allowing inbound and outbound traffic.

.\port-9000.ps1 -Close
This will close port 9000 by removing the existing rules.

#>

param ( [switch]$Open, [switch]$Close )

if ($Open -and $Close) { Write-Host "You cannot use both --open and --close at the same time." exit }

if (-not ($Open -or $Close)) { Write-Host "You must specify either --open or --close." exit }

if (`$Open) { # Open Port New-NetFirewallRule -DisplayName "Allow Port $Port Inbound" -Direction Inbound -Protocol TCP -LocalPort $Port -Action Allow -Profile Any New-NetFirewallRule -DisplayName "Allow Port $Port Outbound" -Direction Outbound -Protocol TCP -LocalPort $Port -Action Allow -Profile Any Write-Host "Port $Port is allowed for inbound and outbound traffic." }

if (`$Close) { # Close Port Remove-NetFirewallRule -DisplayName "Allow Port $Port Inbound" -ErrorAction SilentlyContinue Remove-NetFirewallRule -DisplayName "Allow Port $Port Outbound" -ErrorAction SilentlyContinue Write-Host "Rules for port $Port have been removed." } "@

Set-Content -Path $fileName -Value $scriptContent
Write-Host "Script '$fileName' has been generated."

}

Get user input

$Port = Read-Host "Enter the port number"

Generate the script

Generate-FirewallScript -Port $Port