LAN Port vs. WAN Port: What's the Difference?, How to Use?
An Internet or LAN port isn't working correctly on my router. How do I perform a loopback test to check the port? | Answer | NETGEAR Support
What is WAN port on the router?
How to Port Forward - General Guide to Multiple Router Brands | Support | No-IP Knowledge Base
Amazon.com: Tenda AC2100 Smart WiFi Router AC19 - Dual Band Gigabit Wireless (up to 2033 Mbps) Internet Router for Home | 4 LAN Ports+1 USB Port | 4X4 MU-MIMO Technology | Parental