Tag: nginx ssl

  • Disable TLSv1 in Nginx

    Disable TLSv1 in Nginx

    To disable TLSv1 in nginx, add

    ssl_protocols TLSv1.1 TLSv1.2;
    

    in your server config.

    if you are using letsencrypt SSL, edit file

    vi /etc/letsencrypt/options-ssl-nginx.conf
    

    Find

    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    

    Replace with

    ssl_protocols TLSv1.1 TLSv1.2;
    

    Restart Nginx

    service nginx restart
    

    To verify, run

    nmap --script ssl-enum-ciphers -p 443 DOMAIN.EXTN
    

    This will list all supported SSL protocols.

    nmap

    Nginx SSL Configuration

    See Nginx

  • Nginx SSL Configuration

    Let’s say we have an Nginx virtual host like following

    server {
        listen   80;
        root /var/www/html;
        server_name serverok.in;
        index index.htm index.html;
    }

    To make it SSL enabled, add the following to the server entry.

        listen 443 ssl http2;
        ssl_certificate /etc/ssl/serverok.crt;
        ssl_certificate_key /etc/ssl/serverok.key;
        ssl_client_certificate /etc/ssl/serverok.ca;

    ssl_client_certificate introduced in Nginx version 1.19.4. If you are using an older version, add your ca-bundle after SSL certificate.

    Example

    server {
        listen   80;
        root /var/www/html;
        server_name serverok.in;
        index index.htm index.html;
        listen 443 ssl http2;
        ssl_certificate /etc/ssl/serverok.crt;
        ssl_certificate_key /etc/ssl/serverok.key;
        ssl_client_certificate /etc/ssl/serverok.ca;
        location / {
            try_files $uri/index.html $uri.html $uri;
        }
    }

    SSL protocols

    ssl_session_cache shared:le_nginx_SSL:10m;
    ssl_session_timeout 1440m;
    ssl_session_tickets off;
    
    ssl_protocols TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    
    ssl_ciphers "ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS";

    dhparam

    Create

    openssl dhparam -out /etc/ssl/dhparam.pem 2048

    In your nginx config, add

    ssl_dhparam /etc/ssl/dhparam.pem;

    Redirect Traffic to SSL

    server {
        listen 80;
        server_name  www.serverok.in serverok.in;
        return       301 https://serverok.in$request_uri;
    }

    If you don’t want to redirect SSL verification requests to HTTPS, use

    server {
        listen 80;
        server_name  DOMAIN_NAME;
        location ~ ^/.well-known/ {
            allow all;
            autoindex on;
            root /var/www/html;
        }
        location / {
            return 301 https://DOMAIN_NAME$request_uri;
        }
    }

    Disable TLSv1 in Nginx
    Nginx Proxy SSL Verification
    Nginx Redirect HTTP to HTTPS

    See Nginx