In preparation of your CCNA Security 640-553 exam, we want to make sure we cover the topics that you will encounter on your CCNA exam. So to assist you, below we will discuss the CCNA Security concept, the Cisco Self Defending Network architecture. As you progress through your CCNA exam studies, I am sure with repetition you will find that all the topics become much easier. So even though this may be a difficult concept initially, keep at it as no one said getting your Cisco certification would be easy! Describe the Cisco Self Defending Network architecture

The Cisco approach to protecting a network from such threats is called the Cisco Self-Defending Network, In Cisco’s model of the Self-Defending Network, every network device has a part to play in a cooperative, homogeneous network security strategy.

Before examining which devices to deploy in secure network architecture, it would be useful to determine where the trusted network boundaries or perimeters are. Here is a simple definition of a network perimeter:

Network perimeters are established by Routers. A network perimeter is a logical boundary between parts of the network with differing levels of trust.

The Cisco Self-Defending Network encompasses:

                        Network and endpoint security—The Cisco Self-Defending Network integrates Router, VPN, IPS, and other security services into network devices and endpoints to create an integrated, adaptive, and collaborative defence system.

                        Content security—Cisco product and security innovations extend network defenses beyond the traditional network perimeter to protect data in motion, incorporating e-mail, Web interactions, instant messaging systems, and other applications that require content inspection and control.

                        Application security—A Cisco Self-Defending Network extends protection to applications and data, providing XML and HTML inspection capabilities and fine-grained application control.

                        System management and control—Today’s Cisco Self-Defending Network integrates sophisticated policy, identity, and reputation services with powerful enforcement capabilities. These technologies unify disparate network, endpoint, content, and application security services, and provide businesses with unprecedented visibility and control.

We hope you found this Cisco CCNA Security 640-553 certification article helpful. We pride ourselves on not only tons of free Cisco CCNA exam information, but also providing you with the real world Cisco CCNA skills to advance in your networking career as you exercise the many CCNA lab scenarios in our lab workbooks.