How to obtain SSL from Let’s Encrypt

Get your server up to date

apt update && apt upgrade -y

Install curl and socat

apt install curl socat -y

Install ACME Script

curl https://get.acme.sh | sh

Get FREE SSL Certificate

~/.acme.sh/acme.sh --set-default-ca --server letsencrypt

~/.acme.sh/acme.sh --register-account -m xxxx@xxxx.com

~/.acme.sh/acme.sh --issue -d host.mydomain.com --standalone

~/.acme.sh/acme.sh --installcert -d host.mydomain.com --key-file /root/private.key --fullchain-file /root/cert.crt

sudo apt install certbot python3-certbot-nginx

sudo certbot --nginx -d vpn.yourdomain.com

sudo certbot renew --dry-run