$days = 5
$obj = @()
$fw = Get-WinEvent "Microsoft-Windows-Windows Firewall With Advanced Security/Firewall"
foreach ($temp_fw in $fw) {
if ($temp_fw.id -eq 2097) { # 2004
    $type = "Added Rule"
}
elseif ($temp_fw.id -eq 2006) {
    $type = "Deleted Rule"
}
$port = $temp_fw.Properties[7] | select -ExpandProperty value
$name = $temp_fw.Properties[1] | select -ExpandProperty value
$obj += [PSCustomObject]@{
    Time = $temp_fw.TimeCreated;
    Type = $type;
    Port = $port;
    Name = $name}
}
$obj | Where-Object time -gt (Get-Date).AddDays(-$days)