Sending a few deauth frames are enough to successfully disconnect the stations in case of performing tests and capturing handshakes. -0 specifies the number of times the attack has to replay and -00 means no limit which will flood the AP and station with deauth frames.But make sure that your card must listen on same channel as the AP is operating on.įor Deauthentication with Aireplay-ng, the command is: Let’s start with analyzing the Deauthentication Packets/Frames with Wireshark.ĭeauthentication request can be send either with aireplay-ng or with mdk3 tool. Wireshark offers many useful features for analyzing wireless traffic, including detailed protocol dissectors, powerful display filters, customizable display properties, and the ability to decrypt wireless traffic. An example is shown below where the 'R' Flag is set on the currently selected Deauthentication frame.Regardless of whether you are reading a packet capture from a stored file or from a live interface on a Windows or Linux host, Wireshark’s analysis features are nearly identical. If you have a frame selected you can tell if it is being re-transmitted by checking the flags exposed in the first IEEE 802.11 decode field below the 802.11 Radio Information - this is displayed in the Packet Details view within Wireshark. Using this filter as a display filter of a 802.11 frame capture will show only frames that have the Retry bit set in the Frame Control Field in the MAC header. It's really easy to visualise this.įirst off - the filter for WLAN Retries is: I really like to understand the detected retransmitted frames vs the total number of frames captured. My favourite way to use it is with the I/O Graph. My favourite Wireshark filter of all time is the WLAN Retry filter. Especially useful when doing 802.11 protocol analysis where the incoming frames can quickly accumulate to many thousands in a very short timeframe. Wireshark filters help drill down to useful information among what can feel like a massive, overwhelming stream.
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