View source for Create and Test an SSH Tunnel

[[Category:Raspberry Pi]]
[[Category:202408]]

If you want to temporarely make a local service and port available in your network you can forward it using an SSH tunnel.

Fot this example you will need a local webservice and webpage to make sure the forwarding works as expected.

Check to see if we have something on localhost:80

<source lang=bash>
w3m http://localhost:80
</source>

What are my IP addresses:

<source lang=bash>
ifconfig
</source>

Forward it to a different port, login to ssh user1@192.168.1.2

<source lang=bash>
ssh -fN -L 192.168.1.2:12345:localhost:80 user1@192.168.1.2
</source>

It should now be accessable via http://192.168.1.2:53682 from another location in your network.

Stop the tunnel

<source lang=bash>
ps aux | grep '192.168.1.2:53682' | grep -v 'grep'
kill -9  $( ps aux | grep '192.168.1.2:53682' | grep -v 'grep' |  awk '{ print $2 }' )
</source>