Guidance Needed – SSL Cipher Suite Configuration for nginx (Ubuntu 24.04)

General Discussion
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Hi,

I am running nginx version 1.30.4 on Ubuntu 24.04.4 LTS. I would appreciate it if you could guide me on the ssl_ciphers suite to apply.

cat /etc/nginx/sites-enabled/cbs
server {
    listen 443 ssl;
    http2 on;
    server_name cbs.example.com;

    ssl_certificate /etc/nginx/ssl/full_chain.crt;
    ssl_certificate_key /etc/nginx/ssl/private.key;

    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;
    ssl_prefer_server_ciphers off;


    add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
    add_header Content-Security-Policy-Report-Only "default-src 'self'; object-src 'none'; base-uri 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; font-src 'self'; frame-ancestors 'self';" always;
#    add_header Content-Security-Policy "default-src 'self'; object-src 'none'; base-uri 'self'; script-src 'self'; style-src 'self'; img-src 'self' data:; font-src 'self'; frame-ancestors 'self'; connect-src 'self';" always;
    add_header Report-To '{"group":"csp-endpoint","max_age":10886400,"endpoints":[{"url":"https://cbs.example.com/csp-report"}]}' always;
    add_header X-Content-Type-Options "nosniff" always;
    add_header X-Frame-Options "SAMEORIGIN" always;
    add_header Referrer-Policy "strict-origin-when-cross-origin" always;


    root /opt/web-app/dist/web-app/browser;
    index index.html;


    location = /csp-report {
        access_log /var/log/nginx/csp-report.log;
        return 204;
    }

    location /fineract-provider/ {
        proxy_pass http://localhost:8080/fineract-provider/;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

    location / {
        try_files $uri $uri/ /index.html;
    }
}

server {
    listen 80;
    server_name cbs.example.com;
    return 301 https://$host$request_uri;
}

Please share your comments — I am referring to https://configurator.tlsref.org/ to configure the ssl_ciphers suite.

Best regards,

Kaushal