A router may have one or more LAN ports into which the users plug computers and other devices that need an Internet connection. The router will also have a WAN port, which is the connection point for the cable that runs either into a modem or directly to a telephone or cable socket for connecting to the Internet.
Thereof, can I connect a wireless router to an Ethernet cable?
Most wireless routers have four Ethernet ports on the back that you can use to access the Internet over a wired connection. Additionally, a fifth Ethernet port serves to connect the router to a cable or DSL modem.
Is a LAN and Ethernet cable the same?
Ethernet is a type of network used extensively for setting up LAN. LAN port means your Local Area Network port which invariably ends up being an Ethernet port. So for all practical purpose LAN port is the same as Ethernet port. The connector used is RJ45.
Do you need a router if you have WIFI?
To establish WiFi in your home, all you need is either a modem connected to a wireless router, or a wireless gateway, which is a modem and wireless router in one unit (see What is a Wireless Gateway? for more information). A WiFi-capable device can then use this signal to connect to the Internet.