Александр Брагин

server {
  listen 80 default_server;
  listen [::]:80 default_server;
  return 444;
}

server {
  listen 80;
  listen [::]:80;
  server_name  vashdomain.com;

  error_page  403 /error/404.html;
  error_page  404 /error/404.html;
  error_page  500 502 503 504 /error/50x.html;
  
  location / {
    proxy_pass http://127.0.0.1:4567;
    proxy_http_version 1.1;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header Host $host;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection 'upgrade';
    proxy_cache_bypass $http_upgrade;
  }
}