Description
# Pattern
```
ssh -R *:NEW_PORT:localhost:TARGET_PORT MIDDLE_HOST -p MIDDLE_PORT -l USER
```
# For long term (crontab)
```
@reboot /usr/bin/autossh -M 0 USER@MIDDLE_HOST -p MIDDLE_PORT -N -o "ServerAliveInterval 60" -o "ServerAliveCountMax 3" -R BINDING_ADDRESS:NEW_PORT:localhost:TARGET_PORT
```
---------------------
Ref1: [Stack Exchange: How does reverse ssh tunneling work](https://unix.stackexchange.com/questions/46235/how-does-reverse-ssh-tunneling-work)
Ref2: [Server fault: SSH Reverse port forward bind to address](https://serverfault.com/questions/526782/ssh-reverse-port-forward-bind-to-address)
Option
Script
ssh -R {{ BINDING_ADDRESS }}:{{ NEW_PORT }}:{{ TARGET_HOST }}:{{ TARGET_PORT }} {{ MIDDLE_HOST }} -p {{ MIDDLE_PORT }} -l {{ USER }}