[OpenWrt-Devel] mac80211/DFS-support default since r42431

Bastian Bittorf bittorf at bluebottle.com
Mon Sep 8 05:03:05 EDT 2014

* Felix Fietkau <nbd at openwrt.org> [08.09.2014 10:36]:
> > is from a security point of view a difficult thing - because everybody
> > can take down a complete city-network.
> I've never heard this claim before. How does enabling this option allow
> people to take down a network?

the theory is here:

on short - it is a problem for IBSS/adhoc:
if somebody sends a CSA / channel switch announcement which is
not "signed/thrusted", you must switch.

"somebody" can just mark all channels as "unavailable".

the question is: is it really implemented in IBSS mode and
what about vif's? (adhoc + ap)

bye, bastian
openwrt-devel mailing list
openwrt-devel at lists.openwrt.org

More information about the openwrt-devel mailing list