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What is the WAN port used for?

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In the home and small business, a WAN port is an RJ-45 Ethernet port on a router that is wired to a cable or DSL modem. On small routers, the WAN port may be labeled simply "Internet." In the larger enterprise, a WAN port may hook up to a T3 line or other wide area network service. Contrast with LAN port. read more

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. read more

A WAN port is the portal by which information passes back and forth between the LAN and the WAN. Most users will find a WAN port on a network router. A common home router has one WAN port and four LAN ports. read more

WAN = Wide Area Network. The WAN port in a WiFi router is essentially connecting you to the real "internet". The cable coming out of modem, or if a PPPoE connection, a simple RJ45 ethernet cable are to be plugged in the WAN port. read more

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