3.5. Identifying the Purpose, Benefits, and Characteristics of Firewalls
Generally speaking, a firewall is a hardware/software service that prevents packets from flowing through an interface from one network to another unless they meet the criteria specified by the firewall. In this section, we will discuss the main reasons that you might use a firewall and the benefits that you receive from using firewalls. In addition, we will discuss the characteristics of firewalls and some considerations of which you should be aware.
3.5.1. Critical Information
You should know the purpose of using a firewall. In addition, you should understand the main benefits that an organization obtains by using firewalls. Finally, you should understand the characteristics ...