SSH port-forward on Docker Toolbox from host

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SSH port-forward on Docker Toolbox from host

[!NOTE] This is a Local SSH port-forward (ssh -L)

Requirements

You host operating system must have an SSH server installed, up and running.

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Overview

This is a local SSH port-forward (ssh -L). In other words, the Docker Toolbox machine will make a port locally available from somewhere else. Therefore the process must be initiated on the Docker Toolbox machine.

General command

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

ssh -L <DockerToolbox_Port>:<HostOS_SRV_IP>:<HostOS_SRV_Port> <HostOS_SSH_USER>@<HostOS_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
`<HostOS_SSH_USER>`	The username of the host os SSH server for the connection
`<HostOS_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 -L 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
`user`	The username of the host os SSH server for the connection
`172.16.0.1`	The IP address of the host 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
Host os IP address where SSH server is listening is 172.16.0.1
Host SSH username is user

Make host-based MySQL available on Docker Toolbox

Gather the IP address on your host os where the SSH server is listening
SSH into the Docker Toolbox machine
Forward: 127.0.0.1:3306 from host os to 0.0.0.0:3306 on Docker Toolbox
Terminal window
```
toolbox> ssh -L 3306:127.0.0.1:3306 [email protected]
```

Make host-based PgSQL available on Docker Toolbox

Gather the IP address on your host os where the SSH server is listening
SSH into the Docker Toolbox machine
Forward: 127.0.0.1:5432 from host os to 0.0.0.0:5432 on Docker Toolbox
Terminal window
```
toolbox> ssh -L 5432:127.0.0.1:5432 [email protected]
```