Yes, I understand about the probes but this phone is randomizing its global MAC
address and is appearing on the PF server
with multiple MAC addresses each and every day.
At the last count some 27 unique MAC addresses all with the same prefix but
different host parts, here is a snapshot of a few
registered 00:08:22:16:49:b7 android-5d0bfe1d7b4fe9f
Smartphones/PDAs/Tablets
registered 00:08:22:4a:77:d2 android-5d0bfe1d7b4fe9f
Smartphones/PDAs/Tablets
registered 00:08:22:8c:91:fd android-5d0bfe1d7b4fe9f
Smartphones/PDAs/Tablets
registered 00:08:22:ba:2b:3c android-5d0bfe1d7b4fe9f
Smartphones/PDAs/Tablets
All the same device!
Each time the person ‘connects’ to the WiFi (Note I specifically mention
CONNECTS!) the MAC address is different.
It is a Lenovo A7020A48 I have a seen it doing it.
Andrew
From: Diego Garcia del Rio via PacketFence-users
[mailto:packetfence-users@lists.sourceforge.net]
Sent: 19 September 2017 16:42
To: packetfence-users@lists.sourceforge.net
Cc: Diego Garcia del Rio
Subject: Re: [PacketFence-users] Mobile phone MAC randomisation breaks PF
Agree with Tim... Unless she's telling the phone to "forget" the network each
and every day...
On Tue, Sep 19, 2017 at 11:04 AM, Tim DeNike via PacketFence-users
<packetfence-users@lists.sourceforge.net<mailto:packetfence-users@lists.sourceforge.net>>
wrote:
MAC randomization (At least the way Ive seen it work) only randomizes the MAC
when the device is passively probing for networks. It uses the fixed MAC when
it actually connects.
OR.. It uses a random MAC for a specific SSID and doesn't change it while
connected to that SSID.
If its randomizing the MAC every single time, tell her tough beans, get a phone
that works correctly. :D
On Tue, Sep 19, 2017 at 10:15 AM, Torry, Andrew via PacketFence-users
<packetfence-users@lists.sourceforge.net<mailto:packetfence-users@lists.sourceforge.net>>
wrote:
Hi folks,
We have a new student who cannot seem to get onto our PF controlled wifi since
her mobile phone
keeps randomising its MAC address. It appears this feature is hard coded into
the phones OS and
cannot be disabled. The only way we can see to fix this is to register every
one of the 65535 MAC addresses
the device could be using to the user’s ID but this sees dangerously cludgy to
me.
Has anyone else come up with a potential fix for this as it completely breaks
PF and other MAC based registration systems.
Andrew
Andrew Torry
Senior Infrastructure Engineer
Tel: 01326 370760
Email: andrew.to...@fxplus.ac.uk<mailto:andrew.to...@fxplus.ac.uk>
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