修改hosts，添加 127.0.0.1 www.google.com
本地安装nginx，添加下面的配置文件

```
server {
listen 80;
server_name www.google.com;

location / {
proxy_set_header HOST xie.lu;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass https://xie.lu;
}
allow 127.0.0.1;
deny all;
}
```