Unable to Capture Packets with Airodump-ng on Beaglebone

Introduction

In this article, we will discuss the steps to capture Wi-Fi (802.11) packets in the 2.4 GHz network using airodump-ng on a BeagleBone board. We will assume that you have already set the interface to monitor mode.

Overview of airodump-ng

airodump-ng is a powerful tool that comes with the Aircrack-ng suite. It is used to capture packets in the wireless network. It can capture both management and data frames, which can be used for various purposes such as network analysis, packet injection, and cracking WEP/WPA keys.

Prerequisites

Before we proceed, ensure that you have the following:

• A BeagleBone board
• A wireless network interface that supports monitor mode
• The Aircrack-ng suite installed on your BeagleBone board

Capturing Packets

To capture packets using airodump-ng, follow the steps below:

1. Put your wireless interface into monitor mode using the following command:

Note: Replace wlan0 with the name of your wireless interface.

2. Use the following command to start airodump-ng:

Note: Replace wlan0mon with the name of your wireless interface in monitor mode.

This command will display the available access points and their details such as BSSID, SSID, channel, and encryption. It will also display the clients associated with each access point.

3. To capture packets from a specific access point, use the following command:

Note: Replace [channel] with the channel number of the access point, [BSSID] with the BSSID of the access point, and output with the name of the output file.

This command will capture packets from the specified access point and save them to a file named output-01.cap. You can stop the capture by pressing Ctrl+C.

Analyzing Captured Packets

Once you have captured packets, you can analyze them using various tools such as Wireshark or tshark. You can also use Aircrack-ng to crack WEP/WPA keys using the captured packets.

In this article, we have discussed the steps to capture Wi-Fi (802.11) packets in the 2.4 GHz network using airodump-ng on a BeagleBone board. We have also discussed how to analyze the captured packets using various tools. With this knowledge, you can perform network analysis, packet injection, and crack WEP/WPA keys using the Aircrack-ng suite.

References

• airodump-ng documentation
• Wireshark
• tshark manpage
• Cracking WEP keys using Aircrack-ng
• Cracking WPA/WPA2 keys using Aircrack-ng