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We own the company.com domain, and have ssl comodo wildcard on it.

We have set up a private dns range *.intra.company.com locally on our ADDS Server, unresolvable by the Internet.

I'm wondering whether is possible the install LetsEncrypt certificates on IIS Sites binded with private domain names, without exposing them to the Internet. I've seen a 'hack' to register the domainnames pointing to a publicly available IP and then install the certs. In the local network, point the hostname to the real IP's.

Is this the best way?

michiel Thai
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  • Why cannot you use AD Certificate Services? https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/hh831740(v%3Dws.11) – Lex Li Apr 01 '20 at 11:53
  • If you just need free trusted certificate for internal use, you could generate certificate with visual studio makecert.https://blog.jayway.com/2014/09/03/creating-self-signed-certificates-with-makecert-exe-for-development/ Or you can just use ADCS. – Jokies Ding Apr 02 '20 at 02:07

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