Firewall Migration Validation

1_Test-FirewallServicesOutside.ps1

$services = Import-Csv -Path Services.csv
$fname = "Report-$(get-date -f yyyyMMdd.HHmmss).json"
$report = @()

# Export services to JSON for readability
ConvertTo-Json -InputObject $services | Out-File -FilePath Services.json -Force -Confirm:$false

foreach ($svc in $services) {
    foreach ($addr in $svc.Destination_Address.split(',')) {
        $obj = New-Object -TypeName PSObject
        Add-Member -InputObject $obj -MemberType NoteProperty -Name Rule_Number -Value $svc.Rule_Number
        Add-Member -InputObject $obj -MemberType NoteProperty -Name Name -Value $svc.Name
        Add-Member -InputObject $obj -MemberType NoteProperty -Name Destination_Address -Value $addr
        
        foreach ($port in $svc.TCP_Ports.split(',')) {
            Write-Host "Scanning host $addr TCP/$port ... " -NoNewline
            
            $tcp_client = New-Object System.Net.Sockets.TCPClient
            $c = $tcp_client.BeginConnect($addr, $port, $null, $null)
            $c.AsyncWaitHandle.WaitOne((New-TimeSpan -Seconds 1)) | Out-Null
            
            if ($tcp_client.Connected) {
                Write-Host 'open'
                Add-Member -InputObject $obj -MemberType NoteProperty -Name $port -Value 'open'
            } else {
                Write-Host 'filtered'
                Add-Member -InputObject $obj -MemberType NoteProperty -Name $port -Value 'filtered'
            }
        }
        
        Write-Host
        $report += $obj
    }
}

ConvertTo-Json -InputObject $report | Out-File -FilePath $fname

2_Services.csv