All you got to do is point your links to the directory you choose to display in your frame and make the target with the options provided or the ones you created. That's all to it. E.g if you want to display say
https://192.168.0.15/a2billing/customer_ui/index.php in a new window, all you do is to include the target tag as target="_blank" or whatever you created as the target.
But remember that if your server is external to your hosting then you have to call it in. I assume you have a static IP or dyndns.org account.
Cheers