LetsEncrypt certificate creation for OpenVpn server

gistfile1.txt

Adapted from https://loige.co/using-lets-encrypt-and-certbot-to-automate-the-creation-of-certificates-for-openvpn/

* SSH to the open vpn server:
  ssh -i .ssh/_THE_KEY_TO_USE_ openvpnas@_THE_SERVER_NAME_OR_IP_

* Install Certbot:
  sudo apt-get -y install software-properties-common
  sudo add-apt-repository -y ppa:certbot/certbot
  sudo apt-get -y update
  sudo apt-get -y install certbot

* Generate the certificate using Certbot:
  sudo certbot certonly --standalone --non-interactive --agree-tos --email _YOUR_CERT_EMAIL_ --domains _THE_DOMAIN_TO_PROTECT_ --pre-hook 'sudo service openvpnas stop' --post-hook 'sudo service openvpnas start'

* Link them to the OpenVpn folder (link them, as they are updated automatically):
  sudo ln -s -f /etc/letsencrypt/live/_THE_DOMAIN_TO_PROTECT_/cert.pem /usr/local/openvpn_as/etc/web-ssl/server.crt
  sudo ln -s -f /etc/letsencrypt/live/_THE_DOMAIN_TO_PROTECT_/privkey.pem /usr/local/openvpn_as/etc/web-ssl/server.key

* Restart the OpenVpn server:
  sudo service openvpnas restart