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root@shubham:~# iwconfig wlan0 mode monitor
Error for wireless request "Set Mode" (8B06) :
    SET failed on device wlan0 ; Operation not supported.

Trying to change the mode of wlan0 from managed to monitor. Need some help.

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1 Answer 1

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Not every wireless card and driver combination support monitor mode, particularly, most Broadcoms. If the command reports, "Operation not supported," I'm afraid that's what it means: it can't do it.

You can double-check from the terminal:

iw list

Here is a sample from my machine:

Supported interface modes:
         * IBSS
         * managed
         * AP
         * AP/VLAN
         * monitor
         * P2P-client
         * P2P-GO
         * P2P-device

If your result doesn't include monitor, then it simply isn't possible.

You could, of course, get a different wireless card.

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