Hi Xuebing,
at least for Ad-Hoc mode, you can't hide the SSID without changing the kernel
driver (mac80211). Encrypting the beacon doesn't help here, as the SSID needs
to be clear text eventually even if management frames get encrypted.
Cheers,
Simon
On Saturday, March 30, 2019 11:50:27 AM CEST Xuebing Wang wrote:
> Hi community,
>
> We have batman-adv + OpenWRT + ath9k chip + ath9k driver reliably
> running for about 2 years. The biggest batman-adv mesh network is with
> 100+ nodes.
>
> As this is a closed network, we have a new requirement which is to make
> our batman-adv mesh network invisible, although the current SSID is just
> some meaningless characters.
>
> One thought is hidden_ssid. But, it seems hidden_ssid is only supported
> for AP mode (not IBSS mode).
>
> 802.11w does not protect Beacon frame (because it is before four-ways
> handshake).
>
> As this is a closed network, what about encrypting Beacon (maybe all
> management frames later) using a hard-coded key in wpa_supplicant?
>
> Thanks for your help.
>
> Xuebing Wang
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