$AllProtocols = [System.Net.SecurityProtocolType]'Ssl3,Tls,Tls11,Tls12'
[System.Net.ServicePointManager]::SecurityProtocol = $AllProtocols
[System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$true}

$webClient = New-Object System.Net.WebClient
$content = $webClient.DownloadString('http://www.server1.dk')
$content