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FS#2673 - rsn_preauth_interface should be configurable #7580

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openwrt-bot opened this issue Dec 13, 2019 · 2 comments
Open

FS#2673 - rsn_preauth_interface should be configurable #7580

openwrt-bot opened this issue Dec 13, 2019 · 2 comments
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@openwrt-bot
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openwrt-bot commented Dec 13, 2019

hexa-:

OpenWrt currently automatically uses the client-facing interface ($network_bridge) as rsn_preauth_interface.

https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=package/network/services/hostapd/files/hostapd.sh;h=4bf6a6c9712785f40d059445f80f19d4f2992f4b;hb=HEAD#l554

It would be preferable to be able to configure this manually, since this is the interface where 802.11i preauthentication frames are transmitted over. This should not be mixed with the actual client network.

The hostapd configuration says the following:

# Space separated list of interfaces from which pre-authentication frames are # accepted (e.g., 'eth0' or 'eth0 wlan0wds0'. This list should include all # interface that are used for connections to other APs. This could include # wired interfaces and WDS links. The normal wireless data interface towards # associated stations (e.g., wlan0) should not be added, since # pre-authentication is only used with APs other than the currently associated # one. #rsn_preauth_interfaces=eth0
@openwrt-bot
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openwrt-bot commented Dec 14, 2019

hexa-:

On second thought without something to forward those frames to the management interface that wouldn't work either.

The rsn_preauth_copy_iface option was unfortunately never merge.
https://lists.infradead.org/pipermail/hostap/2016-February/035080.html

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openwrt-bot commented Jan 29, 2020

dangowrt:

I believe something like rsn_preauth_copy-iface will be needed when using AP-STA isolation and bridge port isolation (which is common in public networks)...

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