Configuration SSL pour Let's Encrypt pour avoir une note A+ sur SSLLabs

configuration-ssl-lets-encrypt

# Specify the TLS versions
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;

# Ciphersuites recommendation from the chiper.li
# Use this chipersuites to get 100 points of the SSLabs test
# Some device will not support
#ssl_ciphers "ECDHE-RSA-AES256-GCM-SHA512:DHE-RSA-AES256-GCM-SHA512:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-SHA384";

# Mozilla Ciphersuits Recommendation
# Use this for all devices supports
ssl_ciphers 'ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256';

# Use the DHPARAM key and ECDH curve >= 256bit
# ssl_ecdh_curve secp384r1;
# ssl_dhparam /etc/nginx/dhparam.pem;

server_tokens off;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:50m;
ssl_session_tickets off;

# Enable HTTP Strict-Transport-Security
# If you have a subdomain of your site,
# be carefull to use the 'includeSubdomains' options
add_header Strict-Transport-Security "max-age=63072000; includeSubdomains; preload";

# Enable OSCP Stapling for Nginx web server
# If you're using the SSL from Letsencrypt,
# use the 'chain.pem' certificate
ssl_stapling on;
ssl_stapling_verify on;
ssl_trusted_certificate /etc/letsencrypt/live/lenomdevotrecertificatletsencrypt/fullchain.pem;

resolver 8.8.8.8 8.8.4.4 valid=300s;
resolver_timeout 5s;

# XSS Protection for Nginx web server
# add_header X-Frame-Options DENY;
add_header X-XSS-Protection "1; mode=block";
add_header X-Content-Type-Options nosniff;
# add_header X-Robots-Tag none;