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docker-ssh-bastion
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README.md

Docker: OpenSSH-Server Restricted to TCP Forwarding 🐳

Docker Hub: https://hub.docker.com/r/fphammerle/ssh-bastion

Example: Share Web Server

bastion $ docker run --name ssh-bastion -p 2222:22 -e USERS=alice,bob fphammerle/ssh-bastion
bastion $ docker cp alice-keys ssh-bastion:/home/alice/.ssh/authorized_keys
bastion $ docker cp bob-keys ssh-bastion:/home/bob/.ssh/authorized_keys
alice $ ssh -N -R 28080:localhost:8080 -p 2222 bastion
bob $ ssh -N -L 8081:localhost:28080 -p 2222 bastion
bob $ curl http://localhost:8081/hello_bob.html

Example: SSH Jump Host

$ docker run --name ssh-bastion \
    --publish 2222:22 --env USERS=alice,bob \
    --volume bastion-host-keys:/etc/ssh/host_keys \
    --volume alice-ssh-config:/home/alice/.ssh:ro \
    --volume bob-ssh-config:/home/bob/.ssh:ro \
    --init --rm \
    fphammerle/ssh-bastion
$ ssh -N -R 22221:localhost:22 -p 2222 alice@bastion
$ ssh -J bob@bastion:2222 -p 22221 localhost

Docker Compose 🐙

  1. git clone https://github.com/fphammerle/docker-ssh-bastion
  2. Adapt $USERS and volumes in docker-compose.yml
  3. docker-compose up