nginx.conf

# Basically the nginx configuration I use at konklone.com. 
# I check it using https://www.ssllabs.com/ssltest/analyze.html?d=konklone.com
#
# To provide feedback, please tweet at @konklone or email [email protected].
# Comments on gists don't notify the author. 
# 
# Thanks to WubTheCaptain (https://wubthecaptain.eu) for his help and ciphersuites.
# Thanks to Ilya Grigorik (https://www.igvita.com) for constant inspiration.

server {
    listen 80;
    server_name konklone.com;
    return 301 https://$host$request_uri;
}

# The 'spdy' at the end of the listen command below turns on SPDY support.

server {
    listen 443 ssl spdy;
    server_name konklone.com;

    # Path to certificate and private key.
    # The .crt may omit the root CA cert, if it's a standard CA that ships with clients.
    ssl_certificate /path/to/unified.crt;
    ssl_certificate_key /path/to/my-private-decrypted.key;

    # Tell browsers to require SSL (warning: difficult to change your mind)
    add_header Strict-Transport-Security max-age=31536000;

    # Prefer certain ciphersuites, to enforce Forward Secrecy and avoid known vulnerabilities.
    # 
    # Forces forward secrecy in all browsers and clients that can use TLS,
    # but with a small exception (DES-CBC3-SHA) for IE8/XP users.
    # 
    # Reference client: https://www.ssllabs.com/ssltest/analyze.html
    ssl_prefer_server_ciphers on;
    ssl_ciphers 'kEECDH+ECDSA+AES128 kEECDH+ECDSA+AES256 kEECDH+AES128 kEECDH+AES256 kEDH+AES128 kEDH+AES256 DES-CBC3-SHA +SHA !aNULL !eNULL !LOW !MD5 !EXP !DSS !PSK !SRP !kECDH !CAMELLIA !RC4 !SEED';

    # Cut out (the old, broken) SSLv3 entirely. 
    # This **excludes IE6 users** and (apparently) Yandexbot.
    # Just comment out if you need to support IE6, bless your soul.
    ssl_protocols TLSv1.2 TLSv1.1 TLSv1;

    # Turn on session resumption, using a 10 min cache shared across nginx processes,
    # as recommended by http://nginx.org/en/docs/http/configuring_https_servers.html
    ssl_session_cache   shared:SSL:10m;
    ssl_session_timeout 10m;
    keepalive_timeout   70;

    # Buffer size of 1400 bytes fits in one MTU.
    # nginx 1.5.9+ ONLY
    ssl_buffer_size 1400; 

    # SPDY header compression (0 for none, 9 for slow/heavy compression). Preferred is 6. 
    # 
    # BUT: header compression is flawed and vulnerable in SPDY versions 1 - 3.
    # Disable with 0, until using a version of nginx with SPDY 4.
    spdy_headers_comp 0;

    # Now let's really get fancy, and pre-generate a 2048 bit random parameter
    # for DH elliptic curves. If not created and specified, default is only 1024 bits. 
    #
    # Generated by OpenSSL with the following command:
    #   openssl dhparam -outform pem -out dhparam2048.pem 2048
    # 
    # Note: raising the bits to 2048 excludes Java 6 clients. Comment out if a problem.
    ssl_dhparam /path/to/dhparam2048.pem;


    # OCSP stapling - means nginx will poll the CA for signed OCSP responses, 
    # and send them to clients so clients don't make their own OCSP calls.
    # http://en.wikipedia.org/wiki/OCSP_stapling
    # 
    # while the ssl_certificate above may omit the root cert if the CA is trusted,
    # ssl_trusted_certificate below must point to a chain of **all** certs
    # in the trust path - (your cert, intermediary certs, root cert)
    #
    # 8.8.8.8 and 8.8.4.4 below are Google's public IPv4 DNS servers. 
    # nginx will use them to talk to the CA.
    ssl_stapling on;
    ssl_stapling_verify on;
    resolver 8.8.8.8 8.8.4.4 valid=86400;
    resolver_timeout 10;
    ssl_trusted_certificate /path/to/all-certs-in-chain.crt;
}