Get Web Site SSL Certificate Expired Date

 $Uri = 'https://www.contoso.com';

$request = [System.Net.WebRequest]::Create($Uri);
$request.Proxy.Credentials = [System.Net.CredentialCache]::DefaultNetworkCredentials
$response = $request.GetResponse();
(($request.ServicePoint).Certificate).GetExpirationDateString();

其中 ($request.ServicePoint).Certificate.Subject 可以核對 FQDN

參考資料: https://stackoverflow.com/questions/22233702/how-to-download-the-ssl-certificate-from-a-website-using-powershell

Windows Firewall Block Public InBound 80 Port

Windows Firewall Block Public InBound 80 Port

$FWGroupName = "BlockPublicInBound80Port";

# Remove Rule
$Remove = New-NetFirewallRule -DisplayName "RemovePrepare" -Group $FWGroupName -Direction inbound -Program "C:\windows\system32\calc.exe" -Action Block -RemoteAddress $BlockIPs
Remove-NetFirewallRule -Group $FWGroupName -Confirm:$False

# Add Rule
$BlockIPs = @("0.0.0.1-9.255.255.255", "11.0.0.0-172.15.255.255", "172.32.0.0-192.167.255.255", "192.169.0.0-255.255.255.255")
New-NetFirewallRule -DisplayName "Block 80 Port inBound" -Group $FWGroupName -Direction "inBound" -Protocol "TCP" -LocalPort 80 -Action Block -RemoteAddress $BlockIPs