BBB Reverse SSH Tunnelling

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So you want to use bren for development but the BBB is situated just next to you. No problem!

You'll just have to setup a reverse SSH tunnel!

According to this page it is easy to setup a reverse SSH tunnel.

First on the BBB open a ssh connection to bren

]$ ssh -R 19213:localhost:22

where you will change the port number 19213 to another unused and klausk to your login name. Find a free port by using this command:

]$ netstat -ln | grep <yourDesiredPortNumber>

if not in use you will get no response. If in use you may get a response like this

]$  netstat -ln|grep 19213
tcp        0      0*               LISTEN  

Next thing to do is to log in when the connection is established from BBB to bren. NOTE: you can see over on the Linux hints page how to exchange ssh keys to obtain a passwordless login.

While you keep this connection open you can from your laptop log into bren and try out if you got a whole through to your BBB

[klausk@bren ~]$ ssh klaus@localhost -p 19213
Debian GNU/Linux 7 Debian Image 2015-03-01


default username:password is [debian:temppwd]

klaus@localhost's password: 
Last login: Sun May  3 19:12:59 2015 from

If you get something similar you've got a whole through from bren to your BBB.

Reverse SSH.png

This picture describes what is going on.

  • The Blue arrows are the initial SSH connection from your BBB to bren - the one with the reversed property,
  • The red arrows shows a new ssh connection from your laptop to bren and
  • Finally the green arrows shows the ssh (using the red connection) connection from bren to your BBB through the reversed tunnel.

Final thing to do is to configure the Eclipse on bren to use this remote debugging interface. See BBB Remote Debugging page for details.