Yun access via wifi redirect to homepage

Hi, i configure my router to do it redirect to my yun ip via port 80. When i put my node ip in the browser it redirect to my yun home page. But i need it to do redirect to the sd/www.index.php

How can i configure it?

example:

if i put 201.123.123.201:80 -->it redirect to sd/www.index.php

for index page path "/sd/www/index.php"

nano /etc/config/uhttpd

change

# Server document root
option home             /www

to

# Server document root
option home            /sd/www/index.php
/etc/init.d/uhttpd  restart