In order to be properly inspected, firewalls may send data to a middleman called a service.

To be properly inspected, firewalls can send data to an intermediary called the proxy service.

Explanation:

According to the Merriam-Webster dictionary, a proxy is the "agency, function, or position of one representative acting as a substitute for another." Therefore, a proxy server, or "proxy", is a server that acts as an intermediary between your computer and the Internet. It receives data from the firewall, enabling proper inspection.

your question is incomplete

explanation:

using the scientific method.