This createTunnelWizard.sh creates a SystemD service to set up an autossh reverse tunnel. I've used this to good effect on Ubuntu and Debian flavored linux computers including Raspberry Pi, milage may vary.
This is useful for a REMOTE system (under your authorization and your control) that is behind a firewall, etc., which you can SSH to an external INTERMEDIATE location.
- This requires a REMOTE Port Identifier (probably best to skip well known registered ports)
- INTERMEDIATE username, interUser
- INTERMEDIATE address, interAddress
If this is your case, you can run this script as su, have it create an autotunnel user, and create a systemD service to make an auto rehealing tunnel to an INTERMEDIATE server automatically. Then, from your LOCAL (laptop at a cafe, computer at home, iPhone on the subway, etc.) you will be able to log into your INTERMEDIATE using
ssh <interUser>@<interAddress>
and from the INTERMEDIATE, connect using the REMOTE tunnel:
ssh -p <REMOTE PORT ID> <REMOTE user id>@localhost
where <REMOTE user id> is your user account on the REMOTE computer you wish to connect.
Hat-tip to: https://hobo.house/2016/06/20/fun-and-profit-with-reverse-ssh-tunnels-and-autossh/ for a clear working write-up.
Offered under the MIT License: https://github.com/jacobfnl/reverse_tunnel_wizard/blob/main/LICENSE