Django Remote User Authentication

I am using Django to build a data analysis webpage for our corporate. Currently, I am using the default Django server as the domain of my webpage. However, I am new to Django.

In the webpage I want to do two things:

1. In the navigation bar on the website, I want the username shown. Anyone using the corporate network or in the Active Directory of the corporate is authenticated to use the webpage, and once they visit it, their username is shown at the top of the page.
2. I want to embed a Spotfire file in the webpage. However, I don't want the embedded Spotfire to ask for login, I want it directly shown to the user.

I hope you can help me.