Testing network connection

Here is a very simple way to test network connection between two computers. This is useful when testing, for example, whether your computer behind your router can be reachable from external IP with port-forwarding . In fact, this was exactly the scenario I was testing.

I have a Raspberry Pi on my home network behind a router. I configured my router to assign static IP to my Raspberry Pi and exposed one of its ports to the outside world via port-forwarding. Now, I wanted to test whether I can establish a connection initiated from a device outside of my router to the Raspberry Pi device. Here is how you can test it very easily.

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