Simple external login page with NBI (use Extrenal Radius) for vSZ

Hi everyone,
I am using vSZ. I am trying to build external login page authen by Radius Server. I refered this link but it is sample without Radius Server.
https://forums.ruckuswireless.com/ruckuswireless/topics/simple-external-login-page-for-vsz

Can anybody help me a simple form login page in the web server that it can integrate with NBI?

Thanks a lot!