What you'll learn

Data networks require an understanding of IT security and the risks involved with deploying systems. In this course, Basic Security Concepts for Cisco Networks, you will learn the distinction and interrelatedness of threats, vulnerabilities, and exploits in IT systems. First, you will learn some simple policies to prevent an attacker exploiting vulnerabilities. Next, you will discover how users have been poorly trained to create quality passwords, the benefits of physical security, and how we use AAA to secure systems with a username and password. Finally, you will explore two attacks and how to mitigate them. When you're finished with this course, you will have the skills and knowledge necessary to understand how modified ARP messages could allow an attacker access to your data, and implement Dynamic ARP inspection to prevent the attack.