The first step into the world of network security from the only Cisco Systems authorized publisher. Network Security First Step is a novice-friendly introduction to the world of Network Security. Written as an accessible, easy-to-understand introduction, it expects no previous knowledge of the subject, or of networking in general. It tackles the different terminology, products, services, and elements of networking security, including both the threats and the defenses. Network Security First Step begins with how hackers operate, reviewing some of the more common factors and footprints of hackers, allowing the reader to first understand the threat. The book then flows into the discussion of security policies and protocols, giving the reader the tools to create security policy. The book then goes on to detail security protocols and their role within a secure network infrastructure, and overviews a variety of security technologies like firewalls, router security, Virtual Private Networks (VPNs), and wireless security. The First Step Series from Cisco Press provides students who are true network novices with no prior networking experience with an introduction to networking and networking topics.