Page Wrapper

I’m not sure if I’m trying to achieve the impossible.

I currently have a Joomla site that I am changing to a WordPress site.

In my current site I have a section or page that contains a wrapper to an ASPX payment page on another server.

Is it possible to include a wrapper in WordPress where when someone clicks on a page say called payments, the content on that page is coming from another server.

When they click on the page they enter there account number and they are then shown there invoice and a paypal link.

Can this be done in WordPress!!!