被代理的webserver为lnmp项目，现在需要在反向代理侧使用nginx实现ssl的反向代理，配置如下：
upstream XXX {
server 192.168.0.233:80; #real server的IP及端口
}
server {
listen 443;
server_name XXXXXX.com; #反向代理上对外访问的真实域名
ssl on;
ssl_certificate cert/XXXXXXXX;
ssl_certificate_key cert/XXXXXXXX;
ssl_session_timeout 5m;
ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:ECDHE:ECDH:AES:HIGH:!NULL:!aNULL:!MD5:!ADH:!RC4;
ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
ssl_prefer_server_ciphers on;
location / {
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_pass http://XXX; #XXX为上面upstream定义的域名（非真实域名）
}
access_log /usr/local/nginx/logs/XXX_access.log;
error_log /usr/local/nginx/logs/XXX_error.log error;
}