If I am right, your web browser sends a request to the server, the server in turn loads the page and send it to you. But the server can also request other information of your computer without you knowing it, like the type of browser you are running, your time, your location and some other private stuff.
So my question is: Can you determine what requests are sent by you and requests sent by the server, so that when the server requests your local time, it is denied by a security program?