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WiFi Penetration Testing (Ethical Hacking) From Scratch

WiFi penetration testing or ethical hacking has become a popular technique for testing the security of wireless networks. This technique aims to uncover vulnerabilities in wireless networks and the devices connected to them. It involves simulating an attack to better understand how to defend against such attacks.

In this article, we will dive into WiFi penetration testing from scratch and explore its different aspects.

Tools Required

To perform WiFi penetration testing, you will need certain tools. These include:

1. WiFi adapter with monitor mode: This allows you to capture and analyze the WiFi traffic.

2. Kali Linux: A popular operating system used for penetration testing.

3. Aircrack-ng suite: This is a suite of tools used for testing the security of WiFi networks.

4. Wireshark: A network protocol analyzer that allows you to capture and analyze network traffic.

5. Reaver: A tool used specifically for testing the security of WPS-enabled networks.

Steps to Perform WiFi Penetration Testing

1. Set up your testing environment: This involves creating a simulated network to test. You can use a virtual machine to do this.

2. Scanning for wireless networks: Use Kali Linux's built-in tools to scan for wireless networks in the area. This will include information like the network name (SSID), encryption type, and signal strength.

3. Identifying vulnerable networks: Use Airodump-ng to identify vulnerable networks. This tool allows you to capture data packets from the wireless network and analyze them for vulnerabilities.

4. Cracking the WEP key: If the network uses WEP encryption, you can use Aircrack-ng to crack the WiFi password. This can be done by capturing enough data packets and then using a dictionary attack to guess the password.

5. Cracking the WPA/WPA2 key: If the network uses WPA/WPA2 encryption, you can use a brute force attack to crack the password. This involves guessing the password using a list of pre-generated passwords.

6. Testing the security of the WPS pin: If the network has WPS enabled, you can use Reaver to test the security of the WPS PIN. Reaver will try different PIN combinations until it finds the right one.

7. Analysing network traffic: Use Wireshark to capture and analyze network traffic. This will help you identify any weaknesses in the network's security.

Conclusion

WiFi penetration testing is an essential aspect of network security. It helps identify vulnerabilities that can be exploited by attackers. It is important to remember that this technique should only be used in ethical hacking scenarios. Performing WiFi penetration testing on networks without permission is illegal. It is vital to have written consent from the network owner before performing any tests.