We have a trusted machine which is authorized to connect to a special web service on port 12345, as shown below. The web service whitelists specific clients, and only those IP addresses are allowed to connect.
[ restricted-access ] [ trusted machine ] [ web service ] <===> [ ] [ example.com:12345 ] [ mycorp.com ]
My machine is authorized to connect to the trusted machine:
[ restricted-access ] [ trusted machine ] [ my box ] [ web service ] <===> [ ] <--ssh--> [ ] [ example.com:12345 ] [ mycorp.com ] [ workbox.com ]
I have a script
foo.rb which tries to connect to
example.com:12345. It fails, since I'm not authorized to connect to
example.com directly. Only the trusted box at
mycorp.com can do this.
How do I set up an SSH tunnel so that the script can successfully make the connection?