Re: Networkmanager not connecting to known network

["Darren Albers" <dalbers gmail com>]

On 7/29/07, Alex Janssen <alex ourwoods org> wrote:
> Darren Albers said the following on 07/28/2007 08:07 PM:
> > On 7/28/07, Alex Janssen <alex ourwoods org> wrote:
> >
> >> Aaron Konstam said the following on 07/09/2007 04:02 PM:
> >>
> >>> On Mon, 2007-07-09 at 10:36 -0400, Alex Janssen wrote:
> >>>
> >>>
> >>>> Aaron Konstam said the following on 07/09/2007 10:28 AM:
> >>>>
> >>>>
> >>>>> Is it a wired or wireless network it is timing out on?
> >>>>> --
> >>>>>
> >>>>>
> >>>>>
> >>>> My apologies if I've posted this question twice.  I could not find it in
> >>>> my email an thought it have vaporized somehow.
> >>>>
> >>>> It is wireless.  I have MAC filters setup for secrity.  Could that be a
> >>>> problem?  I can force a connect by creating a new network then selecting
> >>>> my network from the list.
> >>>>
> >>>> Thanks,
> >>>> Alex
> >>>>
> >>>>
> >>>>
> >>>>
> >>> I am sure. It will be interesting if there is a response form the
> >>> networkmanager-list.
> >>>
> >>> You could always remove the MAC filters and see if that makes a
> >>> difference.
> >>> --
> >>> =======================================================================
> >>> Illegal aliens have always been a problem in the United States. Ask any
> >>> Indian. -- Robert Orben Immigration is the sincerest form of flattery.
> >>> -- Jack Paar
> >>> =======================================================================
> >>> Aaron Konstam telephone: (210) 656-0355 e-mail: akonstam sbcglobal net
> >>>
> >>>
> >> Turning off MAC filters and setting up WEP seems to have fixed the
> >> auto-logon problem.  Shouldn't nm work with MAC filters and no WEP?  I
> >> thought that would be pretty simple security.
> >>
> >> Alex
> >>
> >>
> >
> > MAC Filters are no security at all and shouldn't be relied on for
> > anything.   Regardless of this though it /should/ work with
> > NetworkManager but I have seen reports of people with issues like what
> > you described.    What type of wireless card is this?
> >
> Broadcom Dell wireless 1390.  I'm using ndiswrapper with the Dell
> supplied driver.  How could someone guess a MAC address?  How would they
> get around it?
>
> --

The mac address is always sent as part of the frame.  This is how each
station knows how to reach each other since the MAC Address is the
only addressing known at layer two.  Since all hosts on the network
have to know each others MAC it cannot be encrypted.  So all someone
has to do is fire up their favorite wireless discovery program to see
which MAC Addresses have an association and steal it.