21 lines
1.1 KiB
Markdown
21 lines
1.1 KiB
Markdown
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## General
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Port forwarding with socat is a technique that allows the user to forward network traffic from one network to another using the socat tool. Socat is a command-line utility that enables the user to establish network connections and perform various types of network operations, including port forwarding.
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## Commands
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The basic syntax to perform port forwarding using socat is much simpler. If we wanted to open port 3389 on a host and forward any connection we receive there to port 3389 on host 1.1.1.1, you would have the following command:
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Run on the Intermediary Machine
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```shell-session
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socat TCP4-LISTEN:3389,fork TCP4:1.1.1.1:3389
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```
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We might need to open the firewall
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```shell-session
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netsh advfirewall firewall add rule name="Open Port 3389" dir=in action=allow protocol=TCP localport=3389
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```
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The `fork` option allows socat to fork a new process for each connection received, making it possible to handle multiple connections without closing. If you don't include it, socat will close when the first connection made is finished.
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