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Editorial Team
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Asked: 2026-06-08T05:59:22+00:00

A service, for example an FTP server, only accepts connections from a specific network,

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A service, for example an FTP server, only accepts connections from a specific network, where all users will have the same external IP-adress.

I want to connect to this service, but I’m currently not inside the allowed network.

I have ssh access to a server inside the network.

How do I use ssh to tunnel a certain port from my local machine, through a machine on the internal network, to the final service, so that any client opening the correct port won’t notice any difference?

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1 Answer

  1. Editorial Team

    You can create a SSH tunnel to your specific network using the following command.
    For instance, let’s say you want to reach a web service on computer “mywebserver” (port 80).

    • Under Linux or BSD, using OpenSSH, you can use the following commandline:

    ssh -f mysshserver -L 1234:mywebserver:80 -N

    • Under Windows, you can use MobaXterm which includes a simple graphical ssh tunnel builder

    This will open a SSH tunnel between local port 1234 and remote webserver on port 80. You can then open your web browser and connect directly to your web server by typing “http://localhost:1234” in the address bar.

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