configs/nginx-default-site.conf

server {
  listen [::]:443 default_server ssl;
  listen 443 default_server ssl;
  listen [::]:80 default_server;
  listen 80 default_server;
  server_name  _;

  access_log /var/log/nginx/default.access.log;
  error_log /var/log/nginx/default.error.log;

  # Generate a self-signed cert and key: "sudo openssl req -x509 -nodes -days 3650 -newkey rsa:4096 -keyout /etc/ssl/private/nginx-selfsigned.key -out /etc/ssl/certs/nginx-selfsigned.crt"
  ssl_certificate /etc/ssl/certs/nginx-selfsigned.crt;
  ssl_certificate_key /etc/ssl/private/nginx-selfsigned.key;

  # Generate a strong DH Param (can take 10 mins): "sudo openssl dhparam -out /etc/ssl/dhparam.pem 4096"
  ssl_dhparam /etc/ssl/dhparam.pem;

  ssl_protocols TLSv1.3 TLSv1.2 TLSv1.1;
  ssl_prefer_server_ciphers on;
  ssl_ciphers EECDH+ECDSA+AESGCM:EECDH+aRSA+AESGCM:EECDH+ECDSA+SHA512:EECDH+ECDSA+SHA384:EECDH+ECDSA+SHA256:ECDH+AESGCM:ECDH+AES256:DH+AESGCM:DH+AES256:RSA+AESGCM:!aNULL:!eNULL:!LOW:!RC4:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS;

  ssl_session_cache shared:TLS:2m;

  # Everything is a 404
  location / {
    return 404;
  }
}