/etc/nginx/nginx.conf

###_ IMPLEMENT
###_ 1. Enable clickjacking protection.  Disabled by default.

# nginx.conf
user www-data;

## If you're using an Nginx version below 1.3.8 or 1.2. then uncomment
## the line below and set it to the number of cores of the
## server. Otherwise nginx will determine it automatically.
#worker_processes 4;

error_log /var/log/nginx/error.log;
pid /var/run/nginx.pid;

worker_rlimit_nofile 8192;

events {
    worker_connections 4096;
    ## Accept as many connections as possible.
    multi_accept on;
}

http {
    ## MIME types.
    include mime.types;
    default_type application/octet-stream;

    ## FastCGI.
    include fastcgi.conf;

    ## Default log and error files.
    access_log /var/log/nginx/access.log;
    error_log /var/log/nginx/error.log;

    ## Use sendfile() syscall to speed up I/O operations and speed up
    ## static file serving.
    sendfile on;
    ## Handling of IPs in proxied and load balancing situations.
    set_real_ip_from 0.0.0.0/32; # all addresses get a real IP.
    real_ip_header X-Forwarded-For; # the ip is forwarded from the load balancer/proxy

    ## Define a zone for limiting the number of simultaneous
    ## connections nginx accepts. 1m means 32000 simultaneous
    ## sessions. We need to define for each server the limit_conn
    ## value refering to this or other zones.
    limit_conn_zone $binary_remote_addr zone=arbeit:10m;

    ## Timeouts.
    client_body_timeout 60;
    client_header_timeout 60;
    keepalive_timeout 10 10;
    send_timeout 60;

    ## Reset lingering timed out connections. Deflect DDoS.
    reset_timedout_connection on;

    ## Body size.
    client_max_body_size 10m;

    ## TCP options.
    tcp_nodelay on;
    ## Optimization of socket handling when using sendfile.
    tcp_nopush on;

    ## Compression.
    gzip on;
    gzip_buffers 16 8k;
    gzip_comp_level 1;
    gzip_http_version 1.1;
    gzip_min_length 10;
    gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript image/x-icon application/vnd.ms-fontobject font/opentype application/x-font-ttf;
    gzip_vary on;
    gzip_proxied any; # Compression for all requests.
    ## No need for regexps. See
    ## http://wiki.nginx.org/NginxHttpGzipModule#gzip_disable
    gzip_disable msie6;

    ## Serve already compressed files directly, bypassing on-the-fly
    ## compression.
    ##
    # Usually you don't make much use of this. It's better to just
    # enable gzip_static on the locations you need it.
    # gzip_static on;

    ## Hide the Nginx version number.
    server_tokens off;

    ## Use a SSL/TLS cache for SSL session resume. This needs to be
    ## here (in this context, for session resumption to work. See this
    ## thread on the Nginx mailing list:
    ## http://nginx.org/pipermail/nginx/2010-November/023736.html.
    ssl_session_cache shared:SSL:30m;
    ssl_session_timeout 1d;

    ## The server dictates the choice of cipher suites.
    ssl_prefer_server_ciphers on;

    ## Use only Perfect Forward Secrecy Ciphers. Fallback on non ECDH
    ## for crufty clients.
    ssl_ciphers ECDH+aRSA+AESGCM:ECDH+aRSA+SHA384:ECDH+aRSA+SHA256:ECDH:EDH+CAMELLIA:EDH+aRSA:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!SRP:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA;

    ## No SSL2 support. Legacy support of SSLv3.
    ssl_protocols SSLv3 TLSv1 TLSv1.1 TLSv1.2;

    ## Pregenerated Diffie-Hellman parameters.
    ssl_dhparam /etc/nginx/dh_param.pem;

    ## Curve to use for ECDH.
    ssl_ecdh_curve secp521r1;

    ## Enable OCSP stapling. A better way to revocate server certificates.
    ssl_stapling on;
    ## Fill in with your own resolver.
    resolver 8.8.8.8;

    ## Uncomment to increase map_hash_bucket_size. If start getting
    ## [emerg]: could not build the map_hash, you should increase
    ## map_hash_bucket_size: 64 in your
    ## logs. Cf. http://wiki.nginx.org/NginxOptimizations.
    ## See http://wiki.nginx.org/HttpMapModule#map_hash_bucket_size
    #map_hash_bucket_size 192;

    ## Uncomment to increase variables_hash_max_size if you start getting
    ## [emerg] could not build the variables_hash, you should increase
    ## either variables_hash_max_size: 512 or
    ## variables_hash_bucket_size: 64
    ## You only need to increase one. I chose to increase
    ## variables_hash_max_size to 1024 as this was recommended
    ## in nginx forum by developers.
    ## See this forum topic and responses
    ## http://forum.nginx.org/read.php?2,192277,192286#msg-192286
    ## See http://wiki.nginx.org/HttpCoreModule#variables_hash_bucket_size
    ## variables_hash_bucket_size was added for completeness but not
    ## changed from default.
    #variables_hash_max_size 1024; # default 512
    #variables_hash_bucket_size 64; # default is 64


    ## For the filefield_nginx_progress module to work. From the
    ## README. Reserve 1MB under the name 'uploads' to track uploads.
    upload_progress uploads 1m;

    ## Enable the builtin cross-site scripting (XSS) filter available
    ## in modern browsers.  Usually enabled by default we just
    ## reinstate in case it has been somehow disabled for this
    ## particular server instance.
    ## https://www.owasp.org/index.php/List_of_useful_HTTP_headers.
    add_header X-XSS-Protection '1; mode=block';

    ## Enable clickjacking protection in modern browsers. Available in
    ## IE8 also. See
    ## https://developer.mozilla.org/en/The_X-FRAME-OPTIONS_response_header
    ## This may conflict with pseudo streaming (at least with Nginx version 1.0.12).
    ## Uncomment the line below if you're not using media streaming.
    ## For sites *using* frames uncomment the line below.
    #add_header X-Frame-Options SAMEORIGIN;
    ## For sites *not* using frames uncomment the line below.
    #add_header X-Frame-Options DENY;

    ## Block MIME type sniffing on IE.
    add_header X-Content-Options nosniff;

    ## Include the upstream servers for PHP FastCGI handling
    ## configuration. This setup uses UNIX sockets for talking with the
    ## upstream.
    include upstream_phpcgi_unix.conf;

    ## Include the map to block HTTP methods.
    include map_block_http_methods.conf;

    ## Include the php-fpm status allowed hosts configuration block.
    ## Uncomment to enable if you're running php-fpm.
    include php_fpm_status_allowed_hosts.conf;

    ## Include the Nginx stub status allowed hosts configuration block.
    include nginx_status_allowed_hosts.conf;

    ## Include blacklist for bad bot and referer blocking.
    include blacklist.conf;

    ## Include the caching setup. Needed for using Drupal with an external cache.
    include apps/drupal/map_cache.conf;

    ## Microcache zone definition for FastCGI.
    #include fastcgi_microcache_zone.conf;

    ## Include all vhosts.
    include sites-enabled/*;
}