GoKawiilGuide explains WAN vs LAN Ethernet ports on home routers
A tech explainer clarifies the difference between a router's WAN port, which connects to a modem or ONT for internet access, and its LAN ports, which link wired devices like PCs, consoles, TVs and NAS units inside the home. It notes that combo router/modem units skip the WAN port entirely, while some routers use flexible WAN/LAN or auto-sensing ports instead of clearly labeled ones.