A test for our environments, to make sure NAT worked

Test-OutboundIP.ps1

Describe "Outbound traffic from App Servers should be load balanced" {

    $Servers = Invoke-Command -Cn ($Env:COMPUTERNAME -replace "MGT", "DC") {
        Get-ADComputer -Filter * | Where-Object Name -notmatch "SQL|DB|ETL|Cluster|DC" | Select-Object -ExpandProperty Name
    }

    It "Appears all traffic comes from a single IP Address" {
        $IPs = Invoke-Command -EnableNetworkAccess -Cn $Servers { Invoke-RestMethod http://ipinfo.io/json }
        $Servers.Count | Should -BeGreaterThan 4
        $Ips.Count | Should -Be $Servers.Count
        @($IPs | Select-Object ip -Unique).Count | Should -Be 1
    }
}