Lets Encrypt Nginx

server {
    listen 443 ssl;

    ssl_certificate         /etc/letsencrypt/live/helloworld.letsencrypt.org/fullchain.pem;
    ssl_certificate_key     /etc/letsencrypt/live/helloworld.letsencrypt.org/privkey.pem;
    ssl_trusted_certificate /etc/letsencrypt/live/helloworld.letsencrypt.org/fullchain.pem;
    ssl_session_timeout 1d;
    ssl_session_cache shared:SSL:50m;

    # Diffie-Hellman parameter for DHE ciphersuites, recommended 2048 bits
    # Generate with:
    #   openssl dhparam -out /etc/nginx/dhparam.pem 2048
    ssl_dhparam /etc/nginx/dhparam.pem;

    # What Mozilla calls "Intermediate configuration"
    # Copied from https://mozilla.github.io/server-side-tls/ssl-config-generator/
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_ciphers 'ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:CAMELLIA:DES-CBC3-SHA:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA';
    ssl_prefer_server_ciphers on;

    # HSTS (ngx_http_headers_module is required) (15768000 seconds = 6 months)
    add_header Strict-Transport-Security max-age=15768000;

    # OCSP Stapling
    # fetch OCSP records from URL in ssl_certificate and cache them
    ssl_stapling on;
    ssl_stapling_verify on;

    # If you want to specify a DNS resolver for stapling, you can uncomment the below
    # line. If you leave it commented, nginx will use your system resolver, which will probably
    # work just fine!
    # resolver <IP DNS resolver>;
}