So, your computer has to communicate through the router when connecting to the internet.Your computer, which is connected to the router, has a private IP address that can’t be used to connect to the internet.When you connect to the internet, you use a public IP given by an ISP to the router. And when do you need it? When you need to allow incoming connections from a WAN (internet) to reach a specific device/port on a LAN (a private network). What is port forwarding? Well, in simple terms, it’s forwarding internet data from one port to another.
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