server {
    server_tokens off;
    listen 80;
    listen [::]:80;
    server_name example.com;
    
    location ^~ /.well-known/acme-challenge/ {
        default_type "text/plain";
        root /var/www/acme-challenge/;
    }

    return 301 https://$host$request_uri;
}
server {
    server_tokens off;
    listen 443 ssl http2;
    listen [::]:443 ssl http2;
    server_name example.com;
    
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-XSS-Protection "1; mode=block" always;
    add_header Referrer-Policy "no-referrer-when-downgrade" always;
    add_header Content-Security-Policy "default-src 'self'; script-src 'self' 'unsafe-inline' 'unsafe-eval' https://ssl.google-analytics.com https://assets.zendesk.com https://connect.facebook.net; img-src 'self' https://ssl.google-analytics.com https://s-static.ak.facebook.com https://assets.zendesk.com; style-src 'self' 'unsafe-inline' https://fonts.googleapis.com https://assets.zendesk.com; font-src 'self' https://themes.googleusercontent.com; frame-src https://assets.zendesk.com https://www.facebook.com https://s-static.ak.facebook.com https://tautt.zendesk.com; object-src 'none'";
    # Or
    add_header Content-Security-Policy "default-src 'self' http: https: data: blob: 'unsafe-inline'" always;
    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload";

    ssl_session_cache shared:SSL:10m;
    ssl_session_timeout 10m;
    ssl_session_tickets off;

    # Diffie-Hellman parameter for DHE ciphersuites, recommended 2048 bits
    ssl_dhparam /etc/nginx/ssl/dhparam.pem;

    # enables server-side protection from BEAST attacks
    # http://blog.ivanristic.com/2013/09/is-beast-still-a-threat.html
    ssl_prefer_server_ciphers on;
    # disable SSLv3(enabled by default since nginx 0.8.19) since it's less secure then TLS http://en.wikipedia.org/wiki/Secure_Sockets_Layer#SSL_3.0
    # ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    # Update 2019-05-08: Uses TLSv1.3 only, this requires nginx >= 1.13.0 else use TLS1.2
    ssl_protocols TLSv1.3;
    # ciphers chosen for forward secrecy and compatibility
    # http://blog.ivanristic.com/2013/08/configuring-apache-nginx-and-openssl-for-forward-secrecy.html
    ssl_ciphers EECDH+AESGCM:EDH+AESGCM;
    # Or this:
    # ssl_ciphers HIGH:!MEDIUM:!LOW:!aNULL:!NULL:!SHA;
    ssl_ecdh_curve secp384r1;

    # enable ocsp stapling (mechanism by which a site can convey certificate revocation information to visitors in a privacy-preserving, scalable manner)
    # http://blog.mozilla.org/security/2013/07/29/ocsp-stapling-in-firefox/
    resolver 1.1.1.1 1.0.0.1 valid=60s;
    resolver_timeout 5s;
    ssl_stapling on;
    ssl_stapling_verify on;
    ssl_trusted_certificate /etc/nginx/ssl/example.com.crt;

    set $base /home/wwwroot/example.com;
    root $base;
    index index.php index.html;

    location / {
        # First attempt to serve request as file, then
        # as directory, then fall back to displaying a 404.
        try_files $uri $uri/ =404;
    }

    location ~ \.php$ {
        include snippets/fastcgi-php.conf;
        fastcgi_pass unix:/var/run/php/php7.3-fpm.sock;
        fastcgi_buffers 8 16k;
        fastcgi_buffer_size 32k;
        # fastcgi params
        fastcgi_param DOCUMENT_ROOT $realpath_root;
        fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
        fastcgi_param PHP_ADMIN_VALUE "open_basedir=$base/:/usr/lib/php/:/tmp/";
    }

    location ~ /\.ht {
       deny all;
    }
    
    location = /favicon.ico {
        log_not_found off;
        access_log off;
    }
    
    location = /robots.txt {
        log_not_found off;
        access_log off;
    }
    
    # assets, media
    location ~* \.(?:css(\.map)?|js(\.map)?|jpe?g|png|gif|ico|cur|heic|webp|tiff?|mp3|m4a|aac|ogg|midi?|wav|mp4|mov|webm|mpe?g|avi|ogv|flv|wmv)$ {
        expires 7d;
        access_log off;
    }

    # svg, fonts
    location ~* \.(?:svgz?|ttf|ttc|otf|eot|woff2?)$ {
        add_header Access-Control-Allow-Origin "*";
        expires 7d;
        access_log off;
    }
    
    # gzip
    gzip on;
    gzip_vary on;
    gzip_proxied any;
    gzip_comp_level 6;
    gzip_types text/plain text/css text/xml application/json application/javascript application/rss+xml application/atom+xml image/svg+xml;

    ssl_certificate /etc/nginx/ssl/example.com.crt;
    ssl_certificate_key /etc/nginx/ssl/example.com.key;

}