Re: [WIRELESS-LAN] iPhone hotspots that are on when off.
It may be related to the similar issues we see with AWDL AirDrop. Try switching off BT. -Frans Lee H Badman schreef op 28/08/15 om 15:48: Damn my eyes. Just saw this first hand this morning. A young lady has an iPhone, and it had the hotspot feature enabled. We were picking it up as a strong rogue in our NMS. I asked her if she could kindly disable it, which she did. But then things got weird. She went to another building, where we happen to have high-density, world-class 802.11ac wireless using very small cells. And her hotspot was picked up again, with a connected client. As I monitored the situation, I couldn’t help but think that it got turned back on- either accidentally or deliberately. So I reached out again, and she assured me that it’s turned off. So I took my curiosity to The Google. It turns out a lot of people have already noticed that “No” doesn’t mean “No” when it comes to Apple’s iPhone hotspots. It actually means “we’ll show you that it’s off, but other devices can turn it on”. You can’t make this stuff up. _https://discussions.apple.com/thread/6616026?start=30tstart=0_ Couple of select screenshots from the thread attached. Confirmed by an Apple SE to be a feature, and asked why this would ever be a problem (yeah, really). So… settle in for the ride - those Apple iPhone hotspots evidently have a mind of their own. *Lee Badman*| Network Architect Information Technology Services 206 Machinery Hall 120 Smith Drive Syracuse, New York 13244 *t* 315.443.3003 *f* 315.443.4325 *e* _lhbadman@syr.edu_ mailto:lhbad...@syr.edu *w* its.syr.edu *SYRACUSE UNIVERSITY *syr.edu ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
Re: [WIRELESS-LAN] iPhone hotspots that are on when off.
On Fri Aug 28 2015 08:48:09 CDT, Lee H Badman lhbad...@syr.edu wrote: So I reached out again, and she assured me that it’s turned off. So I took my curiosity to The Google. It turns out a lot of people have already noticed that “No” doesn’t mean “No” when it comes to Apple’s iPhone hotspots. It actually means “we’ll show you that it’s off, but other devices can turn it on”. I think there's a little bit of nuance that might be getting missed here. My feeling is that the root cause of all of this is related to the Handoff/Continuity feature set that was introduced with Mac OS X Yosemite and iOS 8. http://www.apple.com/osx/continuity/ These features use Bluetooth and Wi-Fi Direct and AppleIDs to link your devices together to be able to do things like have your laptop and iPad turn on the personal hotspot on your phone (among other things like use your laptop/iPad to receive and make calls through your phone, relay text messages, start composing an email or reading a web page on one device and pick up on another, etc etc). So yes, the advice to turn off Bluetooth will definitely stop the behavior from happening, but I think one other piece is to tell the laptop not to remember all the Wi-Fi networks that it has connected to (or change the priority of remembered networks such that the hotspot SSID is lower in priority than your university network). Or in the case of the iPad, have it forget the network sourced by the personal hotspot. That way, if the laptop/iPad can't connect to any of its other configured networks, it won't then fall back to try to activate the hotspot on the phone. I haven't tested this exhaustively, but that's the best hypothesis I can come up with based on a description of the issue and the configurations of my own devices. -- Julian Y. Koh Associate Director, Telecommunications and Network Services Northwestern University Information Technology (NUIT) 2001 Sheridan Road #G-166 Evanston, IL 60208 847-467-5780 NUIT Web Site: http://www.it.northwestern.edu/ PGP Public Key:http://bt.ittns.northwestern.edu/julian/pgppubkey.html ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
RE: [WIRELESS-LAN] iPhone hotspots that are on when off.
It all sounds reasonable, and way too much to ask the typical user to do. Lee Badman | Network Architect Information Technology Services 206 Machinery Hall 120 Smith Drive Syracuse, New York 13244 t 315.443.3003 f 315.443.4325 e lhbad...@syr.edu w its.syr.edu SYRACUSE UNIVERSITY syr.edu -Original Message- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Julian Y Koh Sent: Friday, August 28, 2015 10:02 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU Subject: Re: [WIRELESS-LAN] iPhone hotspots that are on when off. On Fri Aug 28 2015 08:48:09 CDT, Lee H Badman lhbad...@syr.edu wrote: So I reached out again, and she assured me that it’s turned off. So I took my curiosity to The Google. It turns out a lot of people have already noticed that “No” doesn’t mean “No” when it comes to Apple’s iPhone hotspots. It actually means “we’ll show you that it’s off, but other devices can turn it on”. I think there's a little bit of nuance that might be getting missed here. My feeling is that the root cause of all of this is related to the Handoff/Continuity feature set that was introduced with Mac OS X Yosemite and iOS 8. http://www.apple.com/osx/continuity/ These features use Bluetooth and Wi-Fi Direct and AppleIDs to link your devices together to be able to do things like have your laptop and iPad turn on the personal hotspot on your phone (among other things like use your laptop/iPad to receive and make calls through your phone, relay text messages, start composing an email or reading a web page on one device and pick up on another, etc etc). So yes, the advice to turn off Bluetooth will definitely stop the behavior from happening, but I think one other piece is to tell the laptop not to remember all the Wi-Fi networks that it has connected to (or change the priority of remembered networks such that the hotspot SSID is lower in priority than your university network). Or in the case of the iPad, have it forget the network sourced by the personal hotspot. That way, if the laptop/iPad can't connect to any of its other configured networks, it won't then fall back to try to activate the hotspot on the phone. I haven't tested this exhaustively, but that's the best hypothesis I can come up with based on a description of the issue and the configurations of my own devices. -- Julian Y. Koh Associate Director, Telecommunications and Network Services Northwestern University Information Technology (NUIT) 2001 Sheridan Road #G-166 Evanston, IL 60208 847-467-5780 NUIT Web Site: http://www.it.northwestern.edu/ PGP Public Key:http://bt.ittns.northwestern.edu/julian/pgppubkey.html ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
