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I have an Angstrom Linux device acting as an access point, running hostapd, dhcpd, which works fine. Can I get a list of devices connected to the Wi-Fi? I know I can get the DHCP leases, but I need to know which devices connect through wlan0. I've tried this (iwlist has options):

iwlist wlan0 ap
iwlist wlan0 accesspoints
iwlist wlan0 peers

but all return:

wlan0     Interface doesn't have a list of Peers/Access-Points

iwconfig, iwgetid, iwpriv and iwspy are also present in /sbin, but don't seem to have options to display the client list.

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up vote 14 down vote accepted

You should use iw dev wlan0 station dump as root

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Thanks - I don't see this for my Arm 9 Angstrom yet, but I'll go look for it – Jeff Jun 10 '12 at 15:04
Perhaps you can compile from source, assuming you have enough space or a CF for temporary storage – Mike Pennington Jun 10 '12 at 22:01

You could Use "arp" as root:

$ sudo arp
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Not sure why should this be downvoted, it does show what kind of clients (IP and MAC) are connected – shookees Dec 10 '14 at 11:18
It is downvoted because arp returns only hosts that are active on the network in the arp table on the host. If someone nasty associates with the AP and is passively sniffing they will never show up in the arp table. – Geoffrey Jul 18 '15 at 11:57

take a look here http://wiki.openwrt.org/doc/faq/faq.wireless#how.to.get.a.list.of.connected.clients

and you will see below

hope that help you

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It is better to provide the steps here, and use the link as a reference for further details. That way your answer does not loose all of it value when the link becomes invalid. – Anthon Jan 3 '14 at 17:01

There is also a free (gratis) GUI application , WifiGuard

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