Test connections on a list of ports from a list of remote hosts

flow test.ps1

$serverlist = "localhost", "127.0.0.1" #hosts to test FROM
$target = "google.ca"
$portlist = 8199, 8198, 8197

Write-Host "Target: $target"
foreach ($s in $serverlist) {
    Write-Host "--------------------------"
    Invoke-Command -ComputerName $s -ScriptBlock {
        foreach ($p in $Using:portlist) {
            $connection = Test-NetConnection -ComputerName $Using:target -Port $p
            Write-Host $Using:s on $p : $connection.TcpTestSucceeded
        }
    } 
}