arpspoof libnet_check_iface() ioctl: no such device

Using Arpspoof with Libnet: A Step-by-Step Guide

====================================================

Arpspoit is a powerful tool for performing man-in-the-middle (MITM) attacks on wireless networks. However, to use it effectively, you need to understand how to interface with the underlying network devices using libnet. In this article, we'll cover everything you need to know about setting up Arpspoof with Libnet and perform basic MITM attacks.

Prerequisites

----------

Before diving into the nitty-gritties of Arpspoof configuration, make sure you have installed the following packages on your system:

* libpcap-dev (for sniffing packets)

* libtext-ithread-perl (for multithreading support)

Configuring Libnet for Arpspoof

------------------------------

To use Arppsoot with libnet, we need to first configure our network interface. Here's how you can do it:

1. First, list all the available interfaces on your system using `sudo airmon-ng` command.

```bash

# sudo airmon-ng

phy0 phy0 ath9k Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter (rev 01) managed wlan0-1 *

```

2. Next, we need to identify the interface name associated with your wireless card's physical network adapter (`wlp1s0` in this case). You can do this by running `iwconfig`.

```

# iwconfig

phy0 Interface Mode Access Point

phy0 wlan0 IEEE802.11 Managed AP: MyWAP-SSID

wlan0 Unassociated RSSI:-1 Channel:

SSID not found

wlp1s IBSS -45 WEP Protected WPA2 WPS PSK

Mode: managed

Frequency: 241.7 GHz (5.285 MHz)

```

3. Now, you can use the interface name `wlan0` instead of default one in Arpspoof command.

Setting Up Arppsoot with Libnet Interface

---------------------------------------

Now that we have identified our network interface and its corresponding libnec interface name (`wlp1s0`) let's proceed to set up Arpssspooot using the following steps:

```bash

sudo arpscan --interface wlp1s0 | grep -i 'your_mac_address_here'

```

Replace `your_mac_address_here` with your actual MAC address of target device.

Once you have successfully identified and listed all devices connected to your network interface, we can proceed further by capturing traffic on that particular interface using the following command:

```bash

sudo airmon-ng start wlp1s0

```

Capturing Traffic Using Libnet Interface

--------------------------------------

Now, let's assume our capture device name is `wlan0-1`. We can now use this captured traffic for various purposes like MITM attacks.

Here's an example of how you could use the following code snippet to intercept all HTTP requests and responses going through interface `eth0`:

```c

#include

int main() {

struct libnecap_filter filter;

/* Create a new capture device */

LibNetDevice *dev = LibNetSocketOpen(LIBNET_SOCK_Capture, NULL);

if (NULL == dev) {

perror('LibNet socket error');

return -1;

}

/* Set up the interface for capturing traffic */

libnet_interface_set_default(dev, 0);

while(1){

struct pcap_pkthdump *pd = LibNetPcapNext(dhandle);

if(NULL != pd) {

const char* dump_data = (const void *)pd->data;

size_t length = pd->len;

/* Process the captured packets here... */

free(pd->data);

}

return 0;

}

```

-------

In conclusion, this article has covered everything you need to know about setting up Arpspoof with libnet and performing basic MITM attacks on wireless networks. Remember that these techniques should only be used for educational purposes or when explicitly allowed by the network administrators.

Remember always follow your local laws and regulations before attempting any kind of packet sniffing or intercepton on public Wi-Fi hotspots!

Arpspoof libnet_check_iface() ioctl: no such device