location / {
index index.jsp;
proxy_next_upstream http_500 http_502 http_503 http_504 error timeout invalid_header;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
deny 192.168.1.1;
allow 127.0.0.0/24;
allow 123.56.0.0/16;
allow 172.16.0.0/16;
allow 10.170.0.0/16;
deny all;
}