nginx reverse proxy config

Hi @eva2000
i want to use nginx reverse proxy for additional ddos protection..
so vps 1 had ddos protection, vps 2 original webserver (centmin)..
i had below nginx config location for reverse proxy, is it enough??
or i must add others config or change something??

Code (Text):

add_header X-Proxy-Cache $upstream_cache_status;
      location / {
            proxy_pass http://vps2IP/;
            proxy_redirect off;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_max_temp_file_size 0;
            client_max_body_size 10m;
            client_body_buffer_size 128k;
            proxy_connect_timeout 90;
            proxy_send_timeout 90;
            proxy_read_timeout 90;
            proxy_buffer_size 4k;
            proxy_buffers 4 32k;
            proxy_busy_buffers_size 64k;
            proxy_temp_file_write_size 64k;

      }

Thanks for your advice or other users later..

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