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Brandon Rozek 2021-06-18 20:03:57 -04:00
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---
title: "Forward Packets with Socat"
date: 2021-06-18T19:38:43-04:00
draft: false
tags: []
---
I've written about relaying TCP traffic using [SSH port forwarding](https://brandonrozek.com/blog/sshlocalportforwarding/). Though sometimes you don't require the authenticity and encryption of SSH or want to use another protocol such as UDP. That's where `socat` comes in.
The following will listen to TCP traffic on port 8001 and redirect it to TCP localhost:8000
```bash
socat tcp-listen:8001,reuseaddr,fork tcp:localhost:8000
```
This will listen UDP on port 4009 and forward it to UDP localhost:4010
```bash
socat udp-listen:4009,reuseaddr,fork udp:localhost:4010
```