# generated 2024-12-09, Mozilla Guideline v5.7, nginx 1.27.3, OpenSSL 3.4.0, intermediate config
# https://ssl-config.mozilla.org/#server=nginx&version=1.27.3&config=intermediate&openssl=3.4.0&guideline=5.7

http {

    server {
        listen 443 ssl;
        listen [::]:443 ssl;
        http2 on;
        ssl_certificate /path/to/signed_cert_plus_intermediates;
        ssl_certificate_key /path/to/private_key;

        # HSTS (ngx_http_headers_module is required) (63072000 seconds)
        add_header Strict-Transport-Security "max-age=63072000" always;
    }
    
    ssl_session_timeout 1d;
    ssl_session_cache shared:MozSSL:10m;  # about 40000 sessions

    # intermediate configuration
    ssl_protocols TLSv1.2 TLSv1.3;
    ssl_ecdh_curve X25519:prime256v1:secp384r1;
    ssl_ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:DHE-RSA-CHACHA20-POLY1305;
    ssl_prefer_server_ciphers off;

    # curl https://ssl-config.mozilla.org/ffdhe2048.txt > /path/to/dhparam
    ssl_dhparam "/path/to/dhparam"

    # OCSP stapling
    ssl_stapling on;
    ssl_stapling_verify on;

    # verify chain of trust of OCSP response using Root CA and Intermediate certs
    ssl_trusted_certificate /path/to/root_CA_cert_plus_intermediates;

    # replace with the IP address of your resolver
    resolver 127.0.0.1;

    # HSTS
    server {
        listen 80 default_server;
        listen [::]:80 default_server;

        return 301 https://$host$request_uri;
    }
}