## Version 2022/08/20 - Changelog: https://github.com/linuxserver/docker-baseimage-alpine-nginx/commits/master/root/defaults/nginx/ssl.conf.sample

### Mozilla Recommendations
# generated 2022-08-05, Mozilla Guideline v5.6, nginx 1.17.7, OpenSSL 1.1.1k, intermediate configuration
# https://ssl-config.mozilla.org/#server=nginx&version=1.17.7&config=intermediate&openssl=1.1.1k&guideline=5.6

ssl_certificate /config/keys/cert.crt;
ssl_certificate_key /config/keys/cert.key;
ssl_session_timeout 1d;
ssl_session_cache shared:MozSSL:10m; # about 40000 sessions
ssl_session_tickets off;

# curl https://ssl-config.mozilla.org/ffdhe2048.txt > /path/to/dhparam
ssl_dhparam /config/nginx/dhparams.pem;

# intermediate configuration
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256;
ssl_prefer_server_ciphers on;

# HSTS (ngx_http_headers_module is required) (63072000 seconds)
add_header Strict-Transport-Security "max-age=63072000; includeSubDomains; preload" always;

# 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 /config/keys/cert.crt;

# Optional additional headers
#add_header Cache-Control "no-transform" always;
add_header Content-Security-Policy "default-src 'none'; connect-src * https:; font-src 'self'; img-src https: blob: data:; manifest-src 'self'; media-src 'self' blob: https://matrix.arcticfoxes.net; script-src 'self' 'unsafe-eval' https://www.recaptcha.net https://www.gstatic.com; style-src 'self' 'unsafe-inline'; frame-src 'self' https://www.recaptcha.net blob:; frame-ancestors 'self'; block-all-mixed-content; base-uri 'none'";
add_header Permissions-Policy "accelerometer=(), ambient-light-sensor=(), autoplay=(), battery=(), camera=(), clipboard-read=(), display-capture=(), document-domain=(), encrypted-media=(), fullscreen=(), geolocation=(), gyroscope=(), hid=(), idle-detection=(), interest-cohort=(), magnetometer=(), midi=(), payment=(), picture-in-picture=(), publickey-credentials-get=(), screen-wake-lock=(), serial=(), usb=(), sync-xhr=(), xr-spatial-tracking=()";
add_header Referrer-Policy "same-origin" always;
add_header X-Content-Type-Options "nosniff" always;
#add_header X-UA-Compatible "IE=Edge" always;
add_header X-XSS-Protection "0" always;
add_header Cross-Origin-Resource-Policy cross-origin;
add_header Cross-Origin-Opener-Policy same-origin;
add_header Expect-CT "enforce, max-age=63072000";