[c-nsp] Protecting Wireless Network from Jammers

[Christopher J. Wargaski]

Hey Felix--

    I work in the 802.11 wireless arena and am also an amateur radio
operator. Aside from finding the offending station, there is really nothing
that can be done to prevent RF signal jamming.

   In the ham radio world, we practice finding the source of offending
transmissions by having "fox hunt" events. The technology we use is pretty
much limited to directional antennae and signal strength meters.





> Date: Thu, 13 Jan 2011 01:32:44 +0000
> From: Felix Nkansah <felixnkansah at gmail.com>
> To: cisco-nsp at puck.nether.net
> Subject: [c-nsp] Protecting Wireless Network from Jammers
> Message-ID:
>        <AANLkTikmqiN7WJAWH5hKcSfGZj844F9cP-vV3Erek3do at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hi,
>
> Most cities around the world (like Chicago in the USA) have deployed
> wireless mesh networks (operating in the Public Safety 4.9 Ghz band) for
> connecting their city-wide surveillance cameras.
>
> Since wireless networks are vulnerable to spectrum jammers, I am wondering
> how the authorities prevent rogue citizens from jamming these wireless
> video
> surveillance networks, even if temporary?
>
> Is there some kind of technology that can be used to make wireless networks
> less susceptible to jammers?
>
> Thanks. Felix
>
>