In previous sections, you saw that the Wi-Fi interface default mode is “managed.” To capture a wireless packet, we need to convert the “managed” mode to “monitor” mode. If it is not installed, then use the commands “ apt-get update” and “ apt-get install wireshark” to install Wireshark on your system. Open the terminal and run the command “ wireshark –version.” If Wireshark is installed, then there should be a version name with many details, as in the following screenshot: Open the terminal and run the command “ iw phy0 info” or “ iw list.” There is a huge list of information available here, but we just have to check the section for “ monitor.” If the device does not support monitor mode, then it will not be possible to sniff the wireless packet using Wireshark. This is a must, or you cannot sniff wireless packets using Wireshark. The Wi-Fi card must support monitor mode to be able to sniff out wireless packets. By default, the mode is “ Managed,” which means that it is a client or station mode. ![]() ![]()
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