Some built-in network cards will work for WiFi hacking, but you never know for sure until you try them out. Finding a supported WiFi adapter, however, is tricky. We need a Linux machine because the drivers and tools we will use aren't available for other operating systems. But we do highly anticipate the upcoming ESP32-C5 from Espressif.Ī computer running Linux (you can use your computer or a Raspberry Pi)Ī Dual-Band WiFi adapter that supports packet injection (to send custom packets) and monitor mode (to sniff raw network traffic) I would love to provide you with an easy-to-use 5 GHz WiFi research tool, but unfortunately, I haven't yet been able to find a suitable microcontroller that would allow for 5 GHz WiFi hacking. Testing your dual-band network against a simple vulnerability like deauthentication can be challenging because most hacking tools only work with 2.4 GHz WiFi. And right now, most devices "only" support 2.4 and 5 GHz WiFi. After all, you need the router and the client to support the same frequency. While there are also WiFi standards for 900 MHz, 3.6 GHz, 4.9 GHz, or even 60 GHz, they are not very popular at the moment. It became common to see WiFi routers with both 2.4 and 5 GHz because this dual-band configuration allows you to use a high-frequency bandwidth near the router while also keeping devices from further away connected through 2.4 GHz. Meanwhile, a higher frequency gets you more bandwidth. You can see a brief overview of WiFi generations in the image below.īut why do we use different frequencies in the first place?Ī lower frequency generally allows for a wider range. Traditionally WiFi runs on the 2.4 GHz frequency range, but that's not the only frequency it can work on.
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