vim /etc/nginx/nginx.conf
server {
listen 80;
server_name xxx.xxx.xxx.xxx;
location / {
proxy_pass http://www.xxx.com/;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
}