How to create a ssl certificate for the nginx webserver:
mkdir /etc/nginx/ssl
openssl req -x509 -nodes -days 365 -newkey rsa:4096 -keyout /etc/nginx/ssl/nginx.key -out /etc/nginx/ssl/nginx.crt
vim /etc/nginx/nginx.conf
ssl on;
ssl_certificate /etc/nginx/ssl/nginx.crt;
ssl_certificate_key /etc/nginx/ssl/nginx.key;
systemctl restart nginx
