Cisco Certified Network Professional CCNP Security SENSS Study Guide

Chapter 01: Threat Defense
Technology Brief
Security is a broad topic, which should be discussed in everything we design, related to computer networking that may be wired or wireless. Network security has been considered important for quite some time, especially for those of us whose entire careers have been around the field of network security. There has been a surge in public awareness about securing their devices connected to the public internet because of events of data stealth and leakage in a past few years.
As new vulnerabilities and new methods of attack are being evolved, a least technical user can potentially launch a devastating attack against an unprotected network. As we strive to empower employees around the world with ubiquitous access to important data, it is increasingly important to take measures for the protection of data and the entities using it.
This section will start with mitigation techniques for common layer 2 attacks followed by the lab section, which explains the best practices for network device hardening.