[AusNOG] Apple iPhone5 Wifi connectivity problems - faulty Apple wireless chipsets?

[Jason Reid]

Thanks for that Paul, another job to add to the list :)

Regards
Jason A Reid


On Tue, Jan 8, 2013 at 7:39 AM, Paul Gear <ausnog at libertysys.com.au> wrote:

>  On 01/07/2013 10:01 PM, Jason Reid wrote:
>
> Interesting that TKIP support is an issue - some of our older WAPs with
> TKIP only are having issues with iphone/ipads only (wintel/androids ok)...
>
>
>  On Mon, Jan 7, 2013 at 4:53 PM, Thomas Jackson <thomas at thomax.com.au>wrote:
>
>> A colleague was talking about this the other day - apparently they had
>> some
>> iPad 2 units working perfectly until upgrading them and their new iPhone
>> 5s
>> wouldn't connect at all.
>>
>> In the end, he found out that TKIP support (which is what their APs were
>> configured to use) seems to have vanished, and AES was the only supported
>> cipher. After swapping over, suddenly everything started working again.
>>
>
> I'm surprised it works at all.  The IEEE and the Wi-Fi Alliance deprecated
> it starting from 2009. [1]  There were attacks published against TKIP with
> WPA [2] [3], and my understanding is that these were later extended to work
> against the WPA2 version of TKIP as well (although i haven't managed to
> find the reference).
>
> Turning off TKIP in all equipment that supports it (and replacing
> equipment that doesn't) is the only viable course of action, IMO.
>
> Regards,
> Paul
>
> [1] http://en.wikipedia.org/wiki/Temporal_Key_Integrity_Protocol
> [2]
> http://jwis2009.nsysu.edu.tw/location/paper/A%20Practical%20Message%20Falsification%20Attack%20on%20WPA.pdf
> [3]
> http://www.networkworld.com/news/2009/082709-new-attack-cracks-common-wi-fi.html
>
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>


-- 
Jason Reid
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