From: Clemens Kolbitsch <clemens.kol@gm...> - 2007-06-20 09:08:03
> I have some question related to 802.11 handoff mechanism, and maybe somebody know more about it.
> 1. Does anybody know more information about TIM related field from beacon frame format, and how is modeled information offered by it. I read from IEEE 802.11 standards, but I didn't understand so well.
> 2. If my NETGEAR WAG511 drivers is in monitor mode, can I send probe request?
> Also, it's another mode where I can use passive scanning, but also send traffic?
> I suppose in monitor mode, doesn't want to work, no?
> 3. If I can't send data traffic in monitor mode, why I can send ping packages.
> What kind of ICMP traffic is ping pong?
> Thanks in advance,
i'm not an expert, so maybe some of those who are can correct me if
anything i say is wrong :-)
1.) sorry, no I don't... :-(
2.) if you are in monitor mode, none of the standard networking things
will work... the arriving packets are passed to the upper layer as raw
packets... they cannot be handled like normal arriving packets (i.e.
remove the 802.11 headers and only look at their bodies..)
you can, however, send normal packets when in monitor mode... though
you'll have to send them yourself. just look at the "lorcon" API on the
web... it has a really tiny patch for madwifi (something like 5 lines of
code) that allow you to send ("inject") packets while being in monitor mode.
however, again: it won't be madwifi that is sending the packets but your
own application (or script as lorcon has very high level tools like
"scapy" for python).
3.) i'm quite positive that you cannot! is it possible that either your
card has rejected to put itself into monitor mode (look at the output of
iwconfig --> mode "monitor" and NOT "Managed"!!)
if you are in monitor mode, make sure you are not pinging a local
address (like 10.x.x.x) on your loopback interface or some other
ethernet card that is connected...
hope some of my answers are correct and i could help you :-)