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I use this command to make an SSH tunnel to a remote server. 

ssh -D localproxy:9999 -C tcx0@111.222.333.444

I also made a shell script using expect command to auto process entire process with also providing password automatically.

Problem is, I have to manually run this script to make a connection when PC starts and also, when PC goes to sleep, this connection breaks and I run this script again.

Is there a way I can make it persistent regardless of the state of machine?

8thperson
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2 Answers2

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There are a lot of reasons that can make a connection fail, even using keepalives and things like that; so you should think about a mechanism to restart it automatically.

What I would do is:

  1. set up your SSH endpoint so that you can log in with a key in password-less mode: How can I set up password-less SSH login?

  2. Prepare a script that do the connection in an infinite loop --- restarting if failing; use "keepalive" nonetheless;

  3. launch it at boot: How do I get a program to start up at boot?

Notice that probably you will need to use su -c (or sudo) to run the ssh as your user --- commands in /etc/rc.local are run as root. (Thanks @muru).

Community
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Rmano
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You say you want the connection to automatically restart if it is disconnected. There is a package to do that: autossh. See, e.g. here for how to use it. That link also has a start-up script for making it restart on boot, though that's relatively trivial; it's the restarting on connection failure which is hard.

abligh
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