<SOLVED> - SSH connection impossible between two machine from different network.

[GuillaumeM91]

Hi !

I have two computers, 1 laptop and 1 desktop, both are running on linux mint 18.3.
If I try to connect from my laptop to my desktop from home (same network) every thing is fine. However, if I try to connect from different networks the connection cannot be established.

I tried to connect using IP, IPv4 or IPv6 adress and I got the following results:

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$ ssh USER@IP
ssh: connect to host IP port 22: Connection refused

$ ssh USER@IPv4
ssh: connect to host IPv4 port 22: Connection timed out

$ ssh USER@IPv6
ssh: connect to host IPv6 port 22: Network is unreachable

The port 22 is supposed to be open I don't understand why the connection cannot be established.

Looking foward to read your answers,
Cheers !

[deepakdeshp]

There may not be acces between the machines to each other.try

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ping ip2

from first machine. If it gives time out, it has to be fixed first.

[GuillaumeM91]

Thank you for your answer.

It turned out to be the internet modem which required specific configuration.