![]() If you would take a switch and use it as a router, that wouldn’t work either, since a switch isn’t made for translating incoming and outgoing packages to the internet. If you would skip the router and directly connect your ISP to a computer, that computer alone would have internet access, no other device in your home. The router is essentially taking the packages that come from the WAN-port and redirect them to different LAN-ports or over the wireless network. When the package comes back to that IP address (your assigned IP address by your ISP), it’s your router’s job to know which device it was that made the request and redirect that package to that device. What this means is that whichever device you are using, it will have the same IP address outside the network. Since all traffic goes through one port, every package will look the same for other servers and devices of the internet. Your router will redirect all internet traffic through this port, both incoming and outgoing. The WAN-port on the back of the router is the outgoing connection to the internet, that is something we have covered by now. Why a Router is Essential for WAN-Connections ![]() Your neighbor is not able to print on your printer or see your files. The ISP connects LANs from home users to their WAN, thus giving all LANs access to the network.īut just to be clear, ISPs doesn’t join LANs together, they keep them separate. As I described above, companies connect smaller offices to the HQ via WAN and for home users, it’s kind of the same but for the ISP (Internet Service Provider) instead. It’s more known as a way for the internet to come into your house and to your router. When a VPN (Virtual Private Network) tunnel is configured at both locations, the traffic through the tunnels are private and unauthorized users can’t see it.įoy home users, WAN doesn’t have to be so complicated. WANs are connecting LANs over the internet, and since no business want their traffic to go unencrypted over the internet, they are using VPN tunnels to create secure connections between each LAN. There could be a LAN at each office that is sharing printers and such locally, but a WAN that connects all the LANs together, so the company can share files with everybody. A private WAN is often used by companies to connect their offices together. This is a bit more complicated as WANs can be both private or public. Your router and everything behind it is a LAN. In a LAN, you can share resources with each other like printers or files or you can connect to other computers or devices. Essentially, all private networks are LANs. Your apartment or your house has its own network, which is the LAN. LAN stands for Local Area Network and means that it is a network of computers that are connected to each other. Usually, a router has five network ports on its back, where four of them are marked LAN and one is marked WAN. It’s important that you first know the difference between LAN and WAN, as both of these terms will be on the back of the router. But as with anything else, there is always more to it and today I thought that we are going to dabble into the topic of WAN, LAN and what you can do with this port on the back of the router. Without connecting a cable to the WAN-port, your network will not have any connection to the internet, and you are not able to watch cute cat videos or the latest episode of House of Cards on Netflix. While the LAN-ports (Local Area Network) will connect to your computer and other devices, the WAN-Port needs to be connected to the wall or the modem that your ISP has provided. The WAN-Port is the uplink to the internet. 6 Can You Use the WAN-Port as a LAN-Port?.3 Why a Router is Essential for WAN-Connections.
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