Let's Encrypt Intranet

Sun, 03 Sep 2017 14:33:24 +0000

Let’s Encrypt (LE) has been a popular choice to get certs for public websites. Because it’s free and automated. But how to get certs for private websites, which are common in company’s intranet?

Problem

There’s a web app in your company’s intranet.
The web app has a fully qualified domain name (FQDN), e.g. foo.example.com, not an internal one like foo.internal.
It only resolves to a private IP behind VPN. Therefore, it’s inaccessible without a valid VPN.
You want to add an extra layer of security by enabling HTTPS.

How to get a cert for it? And how to automate it and get it for free?

HTTPS on Random Musings

Let's Encrypt Intranet

Problem