Generate a self-signed certificate for IIS with a custom common name

Using the IIS Manager you can generate self-signed certificates for HTTPS bindings. The certificates generated by the IIS Manager have the limitation that the common name (CN) of the certificate is always the computer name.

If you wish to set an own common name for the certificate, you can use following command in PowerShell (open as administrator) to generate a new self-signed certificate.

New-SelfSignedCertificate -DnsName "my.customdomain.com" -FriendlyName "MyServiceName" -NotAfter (Get-Date).AddYears(10)

Challenge authentication using a custom middleware.

Sometimes you write an ASP.NET Core application without using MVC. For example an microservice or an application serving static files.

Anyhow you might want to secure your application using authentication. I was facing the problem, how I could challenge authentication when I’m not using MVC.

The solution is writing a custom middleware that challenges authentication.