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RE: [Karlnet] RE: [isp-wireless] Re: DSSS security hole anounced

To: "'Karlnet Mailing List'" <karlnet@WISPNotes.com>
Subject: RE: [Karlnet] RE: [isp-wireless] Re: DSSS security hole anounced
From: "Dan Metcalf" <dan.metcalf@wbsysnet.com>
Reply-to: Karlnet Mailing List <karlnet@WISPNotes.com>
Date: Thu, 13 May 2004 13:42:55 -0400
List-post: <mailto:karlnet@WISPNotes.com>
Yes, I know that karlnet uses a different MAC, but it does detect
standard DSSS packets as the DSSS code is the same as any 802.11b


> -----Original Message-----
> From: karlnet-bounces@WISPNotes.com
[mailto:karlnet-bounces@WISPNotes.com] On
> Behalf Of Chris Conn
> Sent: Thursday, May 13, 2004 1:35 PM
> To: Karlnet Mailing List
> Subject: Re: [Karlnet] RE: [isp-wireless] Re: DSSS security hole
anounced
> 
> This vulnerability requires the device to use Carrier Sense Multiple
> Access with Collision Avoidance, the key here being the Collision
> Avoidance.  Karlnet does not use CA since it is based on a polling MAC
> and therefore does not utilize CSMA/CA.
> 
> So sleep easy, if actually you are to believe that someone would truly
> want to try this.
> 
> 
> Dan Metcalf wrote:
> 
> > I wonder if karlnet code could change the DSSS code
> >
> >
> >>-----Original Message-----
> >>From: Ivan Korshun [mailto:ivan@vector.kharkov.ua]
> >>Sent: Thursday, May 13, 2004 2:14 PM
> >>To: isp-wireless@isp-wireless.com
> >>Subject: [isp-wireless] Re: DSSS security hole anounced
> >>
> >>Barry,
> >>
> >>It is known already more than 3 years ...
> >>I have termed it a "sterilizer"
> >>
> >>Solution of a problem "sterilizer":
> >>- change one bit in firmware PC card (Prism 2.5 e.t.s.)
> >>or
> >>- possibility to change the code DSSS by the user,
> >>  the code DSSS could be changed in firmware till 1997
> >>
> >>OFDM (802.11a/g) has much more problems than DSSS...
> >>
> >>-Ivan
> >>
> >>
> >>>Hello WISP,
> >>>
> >>>  http://www.auscert.org.au/render.html?it=4091
> >>>
> >>>  Affects DSSS systems. Also on slashdot......
> >>>
> >>>--
> >>>Best regards,
> >>> Barry                          mailto:isplists@whywait4wires.com
> >>
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