Internet, Networking, & Security Home Networking 944 944 people found this article helpful Introduction to LANs, WANs, and Other Kinds of Area Networks What's the difference between LAN and WAN and other networks? by Bradley Mitchell Writer An MIT graduate who brings years of technical experience to articles on SEO, computers, and wireless networking. our editorial process LinkedIn Bradley Mitchell Updated on April 16, 2020 reviewed by Ryan Perian Lifewire Tech Review Board Member Ryan Perian is a certified IT specialist who holds numerous IT certifications and has 12+ years' experience working in the IT industry support and management positions. our review board Article reviewed on Mar 29, 2020 Ryan Perian Home Networking The Wireless Connection Routers & Firewalls Network Hubs ISP Broadband Ethernet Installing & Upgrading Wi-Fi & Wireless Tweet Share Email One way to categorize the different types of computer network designs is by the scope or scale of the network. For historical reasons, the networking industry refers to nearly every type of design as some type of area network. Network types differ from network topologies (such as bus, ring, and star). Types of Area Networks Common types of area networks are: LAN: Local Area NetworkWAN: Wide Area NetworkWLAN: Wireless Local Area NetworkMAN: Metropolitan Area NetworkSAN: Storage Area Network, System Area Network, Server Area Network, or sometimes Small Area NetworkCAN: Campus Area Network, Controller Area Network, or sometimes Cluster Area NetworkPAN: Personal Area Network LAN and WAN are the two primary and best-known categories of area networks, while the others have emerged with technology advances. Lifewire LAN: Local Area Network A LAN connects network devices over a relatively short distance. A networked office building, school, or home usually contains a single LAN, though sometimes one building contains a few small LANs (perhaps one per room), and occasionally a LAN spans a group of nearby buildings. In TCP/IP networking, a LAN is often, but not always, implemented as a single IP subnet. In addition to operating in a limited space, LANs are also typically owned, controlled, and managed by a single person or organization. These networks also tend to use certain connectivity technologies, primarily Ethernet and Token Ring. WAN: Wide Area Network A WAN spans a large physical distance. The internet is the largest WAN, spanning the Earth. A WAN is a geographically-dispersed collection of LANs. A network device called a router connects LANs to a WAN. In IP networking, the router maintains both a LAN address and a WAN address. A WAN differs from a LAN in several important ways. Most WANs (like the internet) aren't owned by a single organization. Instead, WANs exist under collective or distributed ownership and management. WANs tend to use technology like ATM, Frame Relay, and X.25 for connectivity over the longer distances. LAN, WAN, and Home Networking Residences typically employ one LAN and connect to the internet WAN through an internet service provider (ISP) using a broadband modem. The ISP provides a WAN IP address to the modem, and all the computers on the home network use LAN IP addresses (also called private IP addresses). All computers on a home LAN can communicate directly with each other but must go through a central network gateway, typically a broadband router, to reach the ISP and beyond. Other Types of Area Networks While LAN and WAN are the most popular network types, you may also see references to these others: Wireless Local Area Network: A LAN based on Wi-Fi wireless network technology.Metropolitan Area Network: A network spanning a physical area larger than a LAN but smaller than a WAN, such as a city. A MAN is typically owned and operated by a single entity such as a government body or large corporation.Campus Area Network: A network spanning multiple LANs but smaller than a MAN, such as on a university or local business campus.Personal Area Network: A network that surrounds an individual. A wireless PAN (WPAN) might be created between Bluetooth devices.Storage Area Network: Connects servers to data storage devices through technology like Fibre Channel.System Area Network (also called Cluster Area Network, or CAN): Links high-performance computers with high-speed connections in a cluster configuration.Passive Optical Local Area Network: A POLAN serves fiber by using fiber optic splitters to allow a single optical fiber to serve multiple devices. A couple of other network types that focus on private networks include virtual private networks (VPNs) and enterprise private networks (EPNs).