2020-05-25 23:17:46 -04:00
|
|
|
---
|
|
|
|
|
title: "TCP/UDP with Bash"
|
|
|
|
|
date: 2020-05-25T23:10:15-04:00
|
|
|
|
|
draft: false
|
2022-01-02 14:24:29 -05:00
|
|
|
tags: ["Bash", "Networking"]
|
2023-01-05 14:04:45 -05:00
|
|
|
medium_enabled: true
|
2020-05-25 23:17:46 -04:00
|
|
|
---
|
|
|
|
|
|
|
|
|
|
The bash shell contains pseudo-devices to send packets with TCP/UDP. The pseudo files are formatted like the following:
|
|
|
|
|
|
|
|
|
|
```
|
|
|
|
|
dev/tcp/HOST/PORT
|
|
|
|
|
/dev/udp/HOST/PORT
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
To send a UDP packet to `localhost:6300` containing the payload "Hello, World.", we would run the following command:
|
|
|
|
|
|
|
|
|
|
```bash
|
|
|
|
|
echo "Hello, World." > /dev/udp/127.0.0.1/6300
|
|
|
|
|
```
|
