Network

What is (Computer) Networking?

In the world of computers, networking is the practice of linking two or more computing devices together for the purpose of sharing data. Networks are built with a mix of computer hardware and computer software.

Connecting Two Computers

The simplest kind of home network contains exactly two computers. You can use this kind of network to share files, a printer or another peripheral device, and even an Internet connection. To connect two computers for sharing network resources, consider these alternatives.

Basic Network Topologies

One way to classify computer networks is by their topology. Common network topologies include the bus, star, and ring.

Network Routers

A router is a small hardware device that joins multiple networks together. These networks can include wired or wireless home networks, and the Internet.

What Is a Network Protocol?

Protocols serve as a language of communication among network devices. Network protocols like HTTP, TCP/IP, and SMTP provide a foundation that much of the Internet is built on. Find out more about these protocols and how they work.

What Is a Server?

In computer networking, a server is a computer designed to process requests and deliver data to other computers over a local network or the Internet. Common types of network servers include Web, proxy and FTP servers.

TCP/IP - Transmission Control Protocol / Internet Protocol

TCP/IP provides connection-oriented communication between network devices. TCP/IP is very commonly used both on the Internet and in home computer networks.


Firewalls

A network firewall guards a computer against unauthorized network access. Firewalls are one of the essential elements of a safe home or business network.

Network Addresses

Network addresses give computers unique identities they can use to communicate with each other. Specifically, IP addresses and MAC addresses are used on most home and business networks.

"Computer Networking First-Step"

Many books exist dedicated to home networking, specific network technologies like wireless or TCP/IP, or various academic networking topics. This one covers the overall field of computer networking.