As technology moves more and more toward providing us with a completely interconnected world, there is an ever-increasing demand for IT professionals who are skilled in networking to plan, implement, and maintain these networks. The world of networking is vast and ever-evolving, meaning that IT professionals need to keep their skill set up to date. By understanding the fundamentals of networking, you will be forming a solid foundation that you can build your skills upon and will be in a better position to support your infrastructure.
This chapter focuses on identifying the key characteristics of internets, intranets, and extranets, allowing you to differentiate between each of them. It will also serve as an introduction to security mechanisms such as Virtual Private Networks (VPN), security zones, and firewalls.
The following...
