How to set up access to a LAN device from the outside?

Question

Computer networks

At home, there is a Cisco 3825 router, to which a Raspberry Pi is connected via WiFi. Within the home network, I normally communicate with him via ssh, but how can I configure access from the outside? I myself don’t understand networks at all, so I can’t even formulate a search query properly: what do I need tunnels, routing, redirection?

Answer 1

Forward port 22 to Raspberry Pi IP