Tuesday, June 14, 2022

ssh tunneling for closed ports

 

Source:

http://woshub.com/ssh-tunnel-port-forward-windows/



Problem: Some ports are blocked on the local machine by IT. Rather than asking to open ports, we use ssh tunneling to support the connection.


Assumption:

You can ssh to remote machine from the local machine using ssh user@ip


Approach:

Push the port connection through the ssh tunnel to access open ports



There are 3 modes of ssh tunneling


Local tunneling: When the local machine has IT restrictions but the remote is fine

Remote: Not yet sure what is the usecase for this


Local tunneling command


```

ssh -L 8888:10.247.2.145:7070 ubuntu@10.247.2.145

```

10.247.2.14: IP of the remote machine

7070 : Port that is opened on the remote server

8888: Local port that you will use to tunnel traffic.


After running the command above an ssh shell will open, we dont care about the shell


In the local browser open

127.0.0.1:8888


That's it





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