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# Protect against the BEAST attack by not using SSLv3 at all. If you need to support older browsers (IE6) you may need to add
# SSLv3 to the list of protocols below.
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
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# Ciphers set to best allow protection from Beast, while providing forwarding secrecy, as defined by Mozilla - https://wiki.mozilla.org/Security/Server_Side_TLS#Nginx
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:AES128-GCM-SHA256:AES256-GCM-SHA384:ECDHE-RSA-RC4-SHA:ECDHE-ECDSA-RC4-SHA:AES128:AES256:RC4-SHA:HIGH:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK;
ssl_prefer_server_ciphers on;
# Optimize SSL by caching session parameters for 10 minutes. This cuts down on the number of expensive SSL handshakes.
# The handshake is the most CPU-intensive operation, and by default it is re-negotiated on every new/parallel connection.
# By enabling a cache (of type "shared between all Nginx workers"), we tell the client to re-use the already negotiated state.
# Further optimization can be achieved by raising keepalive_timeout, but that shouldn't be done unless you serve primarily HTTPS.
ssl_session_cache shared:SSL:10m; # a 1mb cache can hold about 4000 sessions, so we can hold 40000 sessions
ssl_session_timeout 10m;
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# nginx does not auto-rotate session ticket keys: only a HUP / restart will do so and
# when a restart is performed the previous key is lost, which resets all previous
# sessions. The fix for this is to setup a manual rotation mechanism:
# http://trac.nginx.org/nginx/changeset/1356a3b9692441e163b4e78be4e9f5a46c7479e9/nginx
#
# Note that you'll have to define and rotate the keys securely by yourself. In absence
# of such infrastructure, consider turning off session tickets:
ssl_session_tickets off;
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# Use a higher keepalive timeout to reduce the need for repeated handshakes
keepalive_timeout 300; # up from 75 secs default
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# This default SSL certificate will be served whenever the client lacks support for SNI (Server Name Indication).
# Make it a symlink to the most important certificate you have, so that users of IE 8 and below on WinXP can see your main site without SSL errors.
#ssl_certificate /etc/nginx/default_ssl.crt;
#ssl_certificate_key /etc/nginx/default_ssl.key;
