Keep your SSH sessions alive

Most Internet service provider will try shutdown active Internet connections after a view minutes to prevent their network from streaming videos or other bandwidth killers. This happens often because of some router setting you can’t change. As a web developer your SSH session (and other active connections) will freeze, if you stop working in the terminal window for just 5 minutes or by getting a fresh cop of coffee.

To get rid of this problem you need to change your SSH config file, enter the following inside to the terminalwindow

sudo nano /etc/ssh/ssh_config

and add this setting to the end of the file

ServerAliveInterval 60

Safe your file and start a new SSH session which will stay active because the client sends every 60 seconds a bit of data to the server.
Check also this article for more information.

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