ssl_session_timeout 5m;
ssl_session_cache shared:SSL:50m;

# intermediate configuration. tweak to your needs.
ssl_protocols TLSv1.2 TLSv1.3;
ssl_ciphers "AES128-SHA:AES256-SHA256:AES256-SHA: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";;
ssl_prefer_server_ciphers off;
ssl_ecdh_curve X25519:prime256v1:secp384r1;