Green Icons on the website.
Right, so a checklist is needed for a website theese days..
- DNS
 - 
DNSSEC, which is close to being simple with a bind server
 - 
HTTP
 - 
HTTPS
 - TLS Certificate from Let's Encrypt
 
A sucessfull validation gives me 5 files:
README
cert.pem
chain.pem
fullchain.pem
privkey.pem
The privkey.pem being …