textarea=Firewalls have a variety of functions that can be implemented to provide security to your network, including access control and filtering, authentication, auditing, reporting, mobile code blocking, and network address translation. In this topic, you will learn about how these functions are considered in developing a strategy to protect against attacks. In addition, firewalls must be designed based on a robustness strategy to ensure the right level of protection is provided. Specifically, by the end of this topic, you will be able to differentiate between the functions that can be implemented by a firewall, describe how a firewall protects the network, and explain how to design a firewall based on robustness.
