networking - ssh connection between two distant computer - Ask Ubuntu


i try transfer files between 2 distant ubuntu pc scp. works on local network (using wlan0 inet addr ip) failed (connection refused on port 22) when scp command comes computer outside network. example, want transfer file machine in canada machine in usa. yet, port 22 has been open sudo ufw allow 22.

port 22 open in local pc. make sure firewall/router has been configured port-forward port 22 computer on network correctly.


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