Harden hestia-nginx security

Author: ioannidesalex

src/deb/nginx/nginx.conf

@@ -82,8 +82,16 @@ http {
     ssl_protocols       TLSv1.1 TLSv1.2 TLSv1.3;
     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";
+    ssl_dhparam         /etc/ssl/dhparam.pem;
+    ssl_ecdh_curve      secp384r1;
+    ssl_session_tickets off;
+    resolver 1.0.0.1 1.1.1.1 valid=300s ipv6=off;
+    resolver_timeout    5s;
+    ssl_stapling on;
+    ssl_stapling_verify on;
     add_header          X-Frame-Options SAMEORIGIN;
     add_header          X-Content-Type-Options nosniff;
+    add_header          X-XSS-Protection "1; mode=block";
 
     # Vhost
     server {