Microsoft Bluetooth 'fix'

Posted: 07-22-2003, 12:58 PM
Hello,

I have seen this in MS's KB:

http://support.microsoft.com/default...b;en-us;811235


SYMPTOMS
When you try to use a Nokia cellular telephone with a Bluetooth transceiver,
the telephone may not work properly. This issue is not limited to Nokia
phones. For example, the Sony au c413s and the Docomo (Sharp) PALDIO 633 may
have the same issue and therefore require the resolution that is described
later in this article.

CAUSE
The link key exchange is susceptible to "sniffing" (the process of viewing
line or connection data by using a sniffing tool or program). If the initial
link key exchange is captured, any future connections could be listened to
by an outside Bluetooth device. To minimize that risk, devices that a
connection will be established to are instructed that link keys will change
for every new connection. Some radio manufacturers and vendors misunderstood
the specification and changed it so that this change occurred immediately.
Because of this immediate change, they disconnected, losing the state of the
link key exchange, and therefore not working with the Bluetooth stack. If
you use this workaround, be aware that it reduces your security for all
bonded connections. However, anyone sniffing your connection must be within
approximately 30 feet on a low-power radio, and would have to sniff your
first bonding process.

-------------------

I have found this while at work, and tonight I will try it out. I have a
6310 (NOT i) and was wondering if anybody had tried this out?

Cheers,
Mike.


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Responses to "Microsoft Bluetooth 'fix'"

ncs75
ncs75's Avatar
Posts: n/a
 
Re: Microsoft Bluetooth 'fix'
Posted: 07-22-2003, 11:02 PM
could be useful...
thanks for the link, in any case.
my BT was working, now it's not.

"Mike Dann" <sod-off-spam@example.com> wrote in message
news:3f1d26e3$0$2000$626a54ce@news.free.fr...
> Hello,
>
> I have seen this in MS's KB:
>
> http://support.microsoft.com/default...b;en-us;811235
>
>
> SYMPTOMS
> When you try to use a Nokia cellular telephone with a Bluetooth

transceiver,
> the telephone may not work properly. This issue is not limited to Nokia
> phones. For example, the Sony au c413s and the Docomo (Sharp) PALDIO 633

may
> have the same issue and therefore require the resolution that is described
> later in this article.
>
> CAUSE
> The link key exchange is susceptible to "sniffing" (the process of viewing
> line or connection data by using a sniffing tool or program). If the

initial
> link key exchange is captured, any future connections could be listened to
> by an outside Bluetooth device. To minimize that risk, devices that a
> connection will be established to are instructed that link keys will

change
> for every new connection. Some radio manufacturers and vendors

misunderstood
> the specification and changed it so that this change occurred immediately.
> Because of this immediate change, they disconnected, losing the state of

the
> link key exchange, and therefore not working with the Bluetooth stack. If
> you use this workaround, be aware that it reduces your security for all
> bonded connections. However, anyone sniffing your connection must be

within
> approximately 30 feet on a low-power radio, and would have to sniff your
> first bonding process.
>
> -------------------
>
> I have found this while at work, and tonight I will try it out. I have a
> 6310 (NOT i) and was wondering if anybody had tried this out?
>
> Cheers,
> Mike.
>
>




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Mike Bradley
Mike Bradley's Avatar
Posts: n/a
 
Re: Microsoft Bluetooth 'fix'
Posted: 07-23-2003, 11:27 AM
Mike Dann wrote:
> Hi,
>
> Had a go, but it didn't change anything. Never mind, can still live
> in hope that Nokia will release a new firmware for the 6310...
> Mike.


If you are getting the 'immediate disconnect' problem, contact
http://www.logomanager.co.uk/support.php and we can send you a tool that
updates the XP USB drivers to get around it. See:
http://www.logomanager.co.uk/kb/inde...w_entry&kbid=2

Mike

--
Customize your Nokia Phone with LogoManager
http://www.logomanager.co.uk


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