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What is the difference between a router's WAN port and a LAN port? Plugging the network cable into the wrong port means WiFi is full and there is no internet. I moved a cable and only then understood
The network ports on the back of the router are divided into WAN and LAN, with one pipe for incoming and one for output. The night I plugged the fiber modem into the router cable, the whole house's WiFi was maxed out but I couldn't get online. This article clearly explains the difference between two mouths, three tips for identifying them, symptoms of inserting the wrong mouth, and how to fix it....

