nginx -T
nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful
# configuration file /etc/nginx/nginx.conf:

user  nginx;
worker_processes  auto;

error_log  /var/log/nginx/debug.log debug;
pid        /run/nginx.pid;


events {
    worker_connections  1024;
}


http {
    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    server_tokens off;

    access_log  /var/log/nginx/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    keepalive_timeout  65;

    #gzip  on;

    include /etc/nginx/conf.d/*.conf;
    include /etc/nginx/sites-enabled/*.conf;
}

# configuration file /etc/nginx/conf.d/auth_misc.conf:
proxy_cache_path cache/ keys_zone=auth_cache:10m;

# configuration file /etc/nginx/conf.d/default-http.conf:
server {
        listen 80;

        location /.well-known/acme-challenge/ {
                root /var/www/certbot;
        }

}


# configuration file /etc/nginx/extra/options-ssl.conf:

# this is added already by backend servers
# add_header Strict-Transport-Security max-age=15768000;

ssl_prefer_server_ciphers on;

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

ssl_protocols TLSv1.2 TLSv1.3;

ssl_dhparam /etc/nginx/extra/ssl-dhparams.pem;

ssl_ciphers ECDH+AESGCM:ECDH+AES256:ECDH+AES128:DH+3DES:!ADH:!AECDH:!MD5:!SHA1:!SHA256:!SHA384;

server {

        listen 80;
        server_name         view.mydomain.de;

        return 301 https://$host$request_uri;
}

server {

        listen              443 ssl;
        server_name         view.mydomain.de;

        ssl_certificate /etc/letsencrypt/live/star.mydomain.de/fullchain.pem;
        ssl_certificate_key /etc/letsencrypt/live/star.mydomain.de/privkey.pem;

        # I trust the internal network
        ssl_verify_client off;

        location /  {
                proxy_pass https://0.0.0.30;
        }

        include /etc/nginx/extra/options-ssl.conf;
}