MassimoGirondi / jumper

A throwaway ssh jump host in a Docker container (because containerization is cool ;))

Jumper: a throwaway Docker container for ssh jumping

Use this image to setup a one-time use throw-away jump-host container in your Docker instance.

Usage

• Run ./throwaway_ssh.sh on your server (or run docker run --rm -it -p45678:2222 jumper)
• Connect with user jumper and the password printed to the terminal by the script. For example:

   	ssh -J jumper@your-public-ip:45678 user@your-internal-server
  

• The container always resets the passord and the public keys, so you may have to use -o UserKnownHostsFile=/dev/null -o StrictHostKeyChecking=no or to remove the old keys from ~/.ssh/known_hosts

Usage scenarios

• One-time connection from a third-party device to transfer some files
• Temporary expose a service through TCP forwarding without opening other ports on the firewall
• ??

License

The material in this repository is licensed under the GNU GPL v3 license. See (LICENSE)[LICENSE] for more information.

(C) Massimo Girondi 2020