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FS#1952 - wifi with hidden ssid and mac-filter doesn't work on IOS12; tp-link_tl-wr842nd_v1 #6858

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openwrt-bot opened this issue Nov 15, 2018 · 1 comment
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@openwrt-bot openwrt-bot commented Nov 15, 2018

edgark:

on tp-link_tl-wr842nd_v1 18.06 and 18.06.1

If hidden ssid and mac-filter is enabled, IOS 12 doesn't able to connect on this wifi network.

But if ssid broadcast is running with mac-filter enabled or ssid broadcast hidden and mac-filter disabled, then it works.

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@openwrt-bot openwrt-bot commented Aug 1, 2021

Jammmmm:

I can confirm this is an issue, but it is not dependant on iOS. I have tested Android (LG v40 ThinQ - Android 9) and iOS (iPhone 7 - iOS 14.6) and it happens with both devices. I have yet to test with laptops, media boxes (eg. Roku) but can do so if needed (Windows and Linux, possibly Mac OS X too).

I am using a TP-Link Archer C7 v4.0 and OpenWRT 19.07.7 r11306-c4a6851c72 / LuCI openwrt-19.07 branch git-21.044.30835-34e0d65.

My /etc/config/wireless contains a list of valid MAC addresses, such as:

config wifi-iface 'default_radio0'
	option device 'radio0'
	option network 'lan'
	option mode 'ap'
	option ssid 'my_network'
	option encryption 'psk2'
	option key 'abcdefg'
	option hidden '1'
	list maclist '12:34:56:78:90:AB'
	list maclist 'CD:EF:01:23:45:67'
	list maclist '89:AB:CD:EF:12:34'
	option macfilter 'allow'
	option isolate '1'

With the above setup, my devices do not connect to the network, even though they should.

If I set hidden to 0, the MAC filtering works fine.
Alternatively I can disable the MAC filter and use a hidden ESSID.

From what I can see, you can have MAC filtering OR hidden ESSID. Not both at the same time.

I know neither option should be considered a security feature, but I'd like to use them together for peace of mind.

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