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#
# /usr/local/etc/nginx/conf.d/ssl.conf
#
# SSL/TLS settings for Nginx
#
# Aaron LI
# 2017-04-25
#
# Credits
# -------
# * Cipherli.st - Strong Ciphers for Apache, nginx and Lighttpd
# https://cipherli.st/
# * Strong SSL Security on nginx
# https://raymii.org/s/tutorials/Strong_SSL_Security_On_nginx.html
# * Mozilla - Security - Server Side TLS
# https://wiki.mozilla.org/Security/Server_Side_TLS
# https://mozilla.github.io/server-side-tls/ssl-config-generator/
# * Let's Encrypt & Nginx
# https://letsecure.me/secure-web-deployment-with-lets-encrypt-and-nginx/
# * Nginx SSL and TLS Deployment Best Practice
# https://www.linode.com/docs/web-servers/nginx/nginx-ssl-and-tls-deployment-best-practices
# * Best nginx configuration for improved security (and performance)
# https://gist.github.com/plentz/6737338
# * Hardening your HTTP response headers
# https://scotthelme.co.uk/hardening-your-http-response-headers/
#
# Tools
# -----
# * Qualys SSL Labs SSL Server Test
# https://www.ssllabs.com/ssltest/
# * Security Headers Analyzer
# https://securityheaders.io/
#
# Diffie-Hellman group:
# $ openssl dhparam -out /usr/local/etc/ssl/dhparam4096.pem 4096
ssl_dhparam /usr/local/etc/ssl/dhparam4096.pem;
# Only use the latest TLS protocols
# NOTE: TLSv1.3 requires Nginx >=1.13 and OpenSSL 1.1.1 with TLSv1.3
ssl_protocols TLSv1.2 TLSv1.3;
ssl_prefer_server_ciphers on;
ssl_session_timeout 1d;
ssl_session_cache shared:SSL:10m;
# Credit: https://github.com/mozilla/server-side-tls/issues/135
ssl_session_tickets off;
# The Online Certificate Status Protocol (OCSP) was created to speed up
# the process that operating systems and browsers use to check for
# certificate revocation.
# Allow the server to send its cached OCSP record to the client during
# the TLS handshake, bypassing the OCSP responder and saving a roundtrip
# between the client and the OCSP responder.
#
# NOTE: If the "ssl_certificate" file does NOT contain intermediate
# certificates, the certificate of the server certificate issuer
# should be present in the "ssl_trusted_certificate" file.
#
ssl_stapling on;
ssl_stapling_verify on;
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