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Monitor interface overview, creating monitor interfaces
Murad edited this page Jul 2, 2022
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Monitor interface can be created on any phy since Linux always supports monitor interface mode in software, regardless of driver features on a given WiFi NIC. To create a monitor mode interface wlan0monitor0 on device phy0, use iw phy phy0 interface add wlan0monitor0 type monitor && ip link set wlan0monitor0 up. Resulting monitor mode can be used in wireshark to sniff packets.
Your NIC may not support multiple modes at once. I have never seen such a NIC though. You can always see combinations supported by your NIC using iw list | egrep -A2 'valid interface combinations|Wiphy'.
| Owner name | NIC name | Vendor code | Device code | Comment |
|---|---|---|---|---|
| @foxpy | Intel Corporation Wi-Fi 6 AX200 (rev 1a) | 8086 |
2723 |
Everything is OK, interface mode works parallel to station mode, wireshark prints sniffed packets in monitor mode |
| @foxpy | Intel Corporation Centrino Wireless-N 2200 | 8086 |
0891 |
TODO |
| @foxpy | ASUSTek Computer, Inc. 802.11ac NIC | 0b05 |
184c |
some kernel threads hang after attempt to add monitor mode interface |