What is a WAN (Wide Area Network)?

A wide area network (WAN) is a network that spans over a large geographical area. A WAN connects different smaller networks, including small local area networks (LANs). They can be private networks to connect parts of a business or they can be more public to connect smaller networks together.

A wide area network (WAN) is a network that spans over a large geographical area. A WAN can connect different smaller networks, including small local area networks (LANs). Typically TCP/IP is the protocol used for a WAN in combination with various devices such as routers, firewalls, and switches