website/content/blog/socatforward.md

---
date: 2021-06-18 23:38:43
draft: false
medium_enabled: true
medium_post_id: 790558856bee
tags:
- Networking
title: Forward Packets with Socat
---

I've written about relaying TCP traffic using [SSH port forwarding](/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
```
New Posts 2021-06-19 00:03:57 +00:00			`---`
Added medium syndication metadata 2023-02-19 02:37:22 +00:00			`date: 2021-06-18 23:38:43`
New Posts 2021-06-19 00:03:57 +00:00			`draft: false`
Medium syndication information 2023-01-05 19:04:45 +00:00			`medium_enabled: true`
Added medium syndication metadata 2023-02-19 02:37:22 +00:00			`medium_post_id: 790558856bee`
			`tags:`
			`- Networking`
			`title: Forward Packets with Socat`
New Posts 2021-06-19 00:03:57 +00:00			`---`

Removing URL prefix for local URLs in blog posts 2022-12-18 17:25:45 +00:00			I've written about relaying TCP traffic using [SSH port forwarding](/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.
New Posts 2021-06-19 00:03:57 +00:00
			`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`
			```