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SEC401.1: Network Security Essentials
Overview
A key way that attackers gain access to a company's resources is through a network connected to the internet. Organizations try to prevent as many attacks as possible. Unfortunately, not all attacks will be prevented, and as such, they must be detected it in a timely manner. Therefore, it is critical to be able to understand the goals of building a defensible network architecture. It is critically important to understand the architecture of the system, types of network designs, relational communication flows, and how to protect against attacks using devices such as routers and switches. These essentials and more will be covered during the first section of this course in order to provide a firm foundation for the remaining sections of this training.
In any organization large or small, all data are not created equal. Some data are routine and incidental while other data can be very sensitive, and loss of those data can cause irreparable harm to an organization. It is essential to understand attacks, the vulnerability behind those attacks, and how to prioritize the information and steps to secure the systems. To achieve this, you need to gain familiarity with the communication protocols of modern networks. Adversaries need our networks just as much as we do. Adversaries live off the land, mercilessly pivoting from system to system, on our network, until they can achieve the long-term goal for which they came. Being able to apply the concepts of 'knowing' our network, and how network operations are performed, will allow us to baseline 'normal'. Knowing normal allows 'abnormal' (the adversary) to stand out.
Cloud computing becomes an obvious topic of discussion in relation to our modern networks - public and private networks alike. A conversation on defensible networking would not be complete without an in-depth discussion of what cloud is, and more importantly, the important security considerations that must be taken into account.
By the end of this section, you will understand Defensible Network Architecture, Protocols and Packet Analysis, Network Device Security, Virtualization and Cloud, and Wireless Network Security.
Last, but certainly not least, all of the above wouldn't be as useful without applying the knowledge in our extensive hands-on lab-based environment. Each day of SEC401 is built on a foundation of how to apply key topics and concepts in real-world application.
By the end of Day 1, the adversary's game will be up. Adversaries need to use OUR network to achieve THEIR goals. By understanding how our networks function (relative to our unique needs), the adversary's activity will be revealed. Discovery of the adversary is only a small part of the overall battle; the remainder of SEC401 will show you how not only to defend, but better prevent (and remediate) the adversary.