It's important to define the role of the firewall in ensuring the safety of the network before moving on. An easily digestible description of the term and the supporting information would be very helpful.

Describe the purpose of a firewall in the context of the OSI model's network security layers. How does it filter network traffic?

What is the normal relationship between an untrusted network, a firewall, and a trusted network, and how do they interact?

It is very necessary to include an explanation of the function of the firewall in connection to the maintenance of the network's security. Don't forget to give an explanation of the term in addition to particular facts and examples to explain its relevance to the world of business.