6.3. Describe the functions of common security appliances and applications

In this objective, I'll discuss the most commonly used advanced access control lists and applications used by Cisco routers. But first, I am going to mention two security appliances typically found on network.

6.3.1. Security Appliances

Two technologies that we can use on our networks that provide security are intrusion prevention systems (IPS) and Intrusion detection systems (IDS).

An IPS is an applicance that monitors network and activities for malicious or unwanted behavior and can react, in real-time, to block or prevent those activities. IPS, for example, will operate in-line to monitor all network traffic for malicious code or attacks. When an attack is detected, ...

Get CCNA®: Cisco® Certified Network Associate: Fast Pass, Third Edition now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.