Generate dhparam.pem 1openssl dhparam -out /etc/nginx/ssl/dhparam.pem 4096 Create /etc/nginx/conf.d/perfect-forward-secrecy.conf since all *.conf in /etc/nginx/conf.d: 1ssl_protocols TLSv1.2; 2ssl_prefer_server_ciphers on; 3ssl_ciphers "EECDH+ECDSA+AESGCM EECDH+aRSA+AESGCM EECDH+ECDSA+SHA384 EECDH+ECDSA+SHA256 …