SSH port-forward on host to Docker Toolbox

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SSH port-forward on host to Docker Toolbox

[!NOTE] This is a Remote SSH port-forward (ssh -R)

Requirements

You shell must have an SSH client (the ssh command or equivalent).

* howto-open-terminal-on-mac * howto-open-terminal-on-win * howto-find-docker-toolbox-ip-address * howto-ssh-into-docker-toolbox * ssh tunnelling for fun and profit

Overview

This is a remote SSH port-forward (ssh -R). In other words, the host os will make the port remotely availabl on the Docker Toolbox machine. Therefore the process must be initiated on the host os.

General command

The following represents the general structure of a remote ssh port-forward:

ssh -R <DockerToolbox_Port>:<HostOS_SRV_IP>:<HostOS_SRV_Port> <DockerToolbox_SSH_USER>@<DockerToolbox_SSH_IP>


`<DockerToolbox_Port>`	The port on the Docker Toolbox machine the service should be made available
`<HostOS_SRV_IP>`	The IP address on the host os, where the service is currently listening
`<HostOS_SRV_PORT>`	The port on the host os, where the service is bound to
`<DockerToolbox_SSH_USER>`	The username of the host os SSH server for the connection
`<DockerToolbox_SSH_IP>`	The IP address of the host at which the SSH server is reachable

Command example

Making 127.0.0.1:10000 from host os available on 0.0.0.0:8080 on Docker Toolbox machine:

ssh -R 8080:127.0.0.1:10000 [email protected]


`8080`	Docker Toolbox should make the port available on itself on this port
`127.0.0.1`	The service currently listens on that IP address on the host os
`10000`	The service is currently bound to that port on the host os
`docker`	The username of the Docker Toolbox SSH server for the connection
`192.168.99.100`	The IP address of the Docker Toolbox at which the SSH server is reachable

Examples

For this example we assume the following information:

Docker Toolbox IP address is 192.168.99.100
Docker Toolbox SSH username is docker

Make host-based MySQL available on Docker Toolbox

Open a terminal on your host os
Forward: 127.0.0.1:3306 from host os to 0.0.0.0:3306 on Docker Toolbox
Terminal window
```
toolbox> ssh -R 3306:127.0.0.1:3306 [email protected]
```

Make host-based PgSQL available on Docker Toolbox

Open a terminal on your host os
Forward: 127.0.0.1:5432 from host os to 0.0.0.0:5432 on Docker Toolbox
Terminal window
```
toolbox> ssh -R 5432:127.0.0.1:5432 [email protected]
```