In the previous section, we mentioned some of the features and services of the ASA. Here, we are going to discuss the key features and services in the ASA and how they can assist your organization and fit business needs. Whether you are a student, a network security engineer, a cyber security professional, or simply an enthusiast, understanding the functionality of the ASA will be helpful in the journey ahead.
Let's begin!
First, let's discuss a few things about the ASA and how it determines (by default) whether traffic is allowed to flow from one interface to another. Each interface on the ASA is assigned to a network ,or what is better known as a zone. A zone is simply an area on the network. There are typically three zones: the INSIDE zone, the OUTSIDE zone, and the Demilitarized zone. Each zone has a security level defined by a number ranging from 0...
