We use Clearpass for user MAC reg portal and for device fingerprinting. We have a special bit set in LDAP (AD) that we check for when a device seeks to auth onto a wireless network. If we need to prevent all user devices from getting connected we disable the bit. A relatively short reauth interval will prevent reauths.
Mike Michael Dickson Network Engineer Information Technology University of Massachusetts Amherst 413-545-9639 [email protected] PGP: 0x16777D39 On 9/25/20 10:25 AM, Tim Cappalli wrote: > If you're using Aruba ClearPass, you can add an account check during > authorization. > > > ------------------------------------------------------------------------ > *From:* The EDUCAUSE Wireless Issues Community Group Listserv > <[email protected]> on behalf of Tristan Gulyas > <[email protected]> > *Sent:* Thursday, September 24, 2020 20:34 > *To:* [email protected] > <[email protected]> > *Subject:* Re: [WIRELESS-LAN] Wireless Device Policy Questions > > > Hi, > > > We're considering this approach, however we need a way to die this in > with AD account status/expiry which needs to be near-instant, i.e. if > an AD account/identity for a user is disabled, we need to immediately > deregister or suspend ALL devices they have registered to their > identity, otherwise things get ugly from an infosec perspective. > > I'm assuming freeradius+web-based front end for registration? How do > you perform the device fingerprinting? That's a very cool solution! > > Cheers, > Tristan > > -- > > *TRISTAN GULYAS* > Senior Network Engineer > > *Technology Services, eSolutions* > Monash University > 738 Blackburn Road > Clayton 3168 > Australia > > E: [email protected] <mailto:[email protected]> > monash.edu > <https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmonash.edu%2F&data=02%7C01%7Ctim.cappalli%40MICROSOFT.COM%7C93dbd1aacb044bf22b1f08d860eacbbc%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637365908850239992&sdata=p0%2B%2F96rVjy7eQmjgdCJb6kbDbhtUMBZko6r0fYOm5WM%3D&reserved=0> > >> On 25 Sep 2020, at 3:11 am, Michael Dickson <[email protected] >> <mailto:[email protected]>> wrote: >> >> We created a PSK SSID with MAC auth registration for devices. We >> limit device types to essentially the "consumer grade entertainment >> devices" genre. We use device fingerprinting to accomplish this. We >> started from a "deny all then allow" paradigm. Only game consoles >> during pilot. Then added video streaming devices then AppleTV, Echo, >> SmartTVs, etc. Easier to add device types then take away. 802.1x >> capable devices get denied. We also limit number of devices a user >> can register. All helps to mitigate the flood of industrial IT >> devices coming in from campus wide vendors, some of which may fall >> into the life-safety genre. Vendors get stuck and end up asking how >> they can add "a lot" of sensors (e.g. HVAC) to our wireless. We have >> a discussion, give it a thumbs up or down, and create >> rules/policies/networks as needed. Good but not perfect. But starting >> off closed then letting out the line has helped. Having a PSK network >> also solves the issue of devices that can't connect to open SSIDs. >> And if we end up just allowing all on the devices network at least we >> have a sponsor to tie the devices back to. >> >> Mike Dickson >> Michael Dickson >> Network Engineer >> Information Technology >> University of Massachusetts Amherst >> 413-545-9639 >> [email protected] <mailto:[email protected]> >> PGP: 0x16777D39 >> On 9/24/20 11:33 AM, Lee H Badman wrote: >>> >>> We created an open SSID for the dorms that has Internet access only. >>> It helps with maybe ¾ of the consumer devices, but there are still >>> some home gadgets that need more- Chromecast is one example. Some >>> speakers as well. Then there are devices that will ONLY join PSK >>> networks (like TP-Link power strip) so the open won’t work there. I >>> have seen one Nanoleaf light controller that will not work in 2.4 if >>> it sees 5 GHz, and it only works in 2.4 despite the ability to sense >>> 5. The unholy and expensive things needed to make these high end >>> enterprise systems work like home Wi-Fi is really fairly astounding. >>> >>> >>> >>> If you go this route, expect to occasionally buy and try consumer >>> gear to verify what works and what doesn’t, and to play whack a mole >>> with students wireless hotspots when whatever you attempt doesn’t >>> immediately work. >>> >>> >>> >>> Or… let them use their own hotspots and be done with it. (If only…) >>> >>> >>> >>> Lee Badman >>> >>> >>> >>> >>> >>> >>> >>> *Lee Badman*| Network Architect (CWNE#200) >>> >>> Information Technology Services >>> (NDD Group) >>> 206 Machinery Hall >>> 120 Smith Drive >>> Syracuse, New York 13244 >>> >>> *t*315.443.3003 *e* [email protected] <mailto:[email protected]> *w* >>> its.syr.edu >>> <https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fits.syr.edu%2F&data=02%7C01%7Ctim.cappalli%40MICROSOFT.COM%7C93dbd1aacb044bf22b1f08d860eacbbc%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637365908850239992&sdata=EHQAL8LNydoJ%2FA8tKIlFwd6Tw5iTNPk512fAYtpW6IY%3D&reserved=0> >>> >>> Campus Wireless >>> Policy:https://answers.syr.edu/display/network/Wireless+Network+and+Systems >>> <https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fanswers.syr.edu%2Fdisplay%2Fnetwork%2FWireless%2BNetwork%2Band%2BSystems&data=02%7C01%7Ctim.cappalli%40MICROSOFT.COM%7C93dbd1aacb044bf22b1f08d860eacbbc%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637365908850249985&sdata=R6UbBhPEobuLtrTxlcuijJdVEaZnkidRG%2FnvVdVkGHs%3D&reserved=0> >>> >>> *SYRACUSE UNIVERSITY* >>> syr.edu >>> <https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fsyr.edu%2F&data=02%7C01%7Ctim.cappalli%40MICROSOFT.COM%7C93dbd1aacb044bf22b1f08d860eacbbc%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637365908850249985&sdata=XtN5C1ML%2BhmHwOPlWeHpEQnzCudkNs1wOcjkUGagntU%3D&reserved=0> >>> >>> >>> >>> *From:* The EDUCAUSE Wireless Issues Community Group Listserv >>> <[email protected]> >>> <mailto:[email protected]> *On Behalf Of *Gernannt, >>> Bill >>> *Sent:* Thursday, September 24, 2020 10:54 AM >>> *To:* [email protected] >>> <mailto:[email protected]> >>> *Subject:* [WIRELESS-LAN] Wireless Device Policy Questions >>> >>> >>> >>> All – >>> >>> >>> >>> From a residence hall perspective, Young Harris College is a >>> wireless only campus. We are currently seeing a 40% increase in >>> wireless devices over last Fall. This has placed a bit of a strain >>> on our wireless network and, by extension, our tiny IT department. >>> This has prompted several internal discussions as to what >>> expectations our end users should have related to wireless support. >>> >>> >>> >>> Obviously, our core responsibility is to provide the resources >>> necessary to have a successful educational experience. But, we also >>> recognize there is a need for our students to have access to online >>> recreational activities like gaming and streaming media. As we look >>> to strike a balance, we wanted to reach out to other institutions >>> for insight and guidance. >>> >>> >>> >>> Have any institutions implemented a restrictive policy that >>> prohibits specific wireless devices? If so, how did you determine >>> what was acceptable and what was not? How did you get leadership to >>> support the initiative? How do you go about enforcing the policy? >>> >>> >>> >>> Have any institutions developed policies that set expectations for >>> wireless performance? What does the policy consider to be necessary >>> versus desirable? >>> >>> >>> >>> Any examples or ideas would be most welcome. Feel free to reach out >>> to me directly, if preferred. >>> >>> >>> >>> Regards, >>> >>> >>> >>> *Bill Gernannt* >>> >>> Network Administrator >>> >>> Information Technology Services >>> >>> 1 College Street | Young Harris, Georgia 30582 >>> (706) 379-5206|[email protected] >>> <mailto:[email protected]>|yhc.edu >>> <https://nam06.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.yhc.edu%2F&data=02%7C01%7Ctim.cappalli%40MICROSOFT.COM%7C93dbd1aacb044bf22b1f08d860eacbbc%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637365908850259981&sdata=aQ19Yd4SKIq0eBwC6WAgIaSioeI7ZAz8UW0XNvRMvKE%3D&reserved=0> >>> >>> <image001.png> >>> >>> >>> >>> ********** >>> Replies to EDUCAUSE Community Group emails are sent to the entire >>> community list. If you want to reply only to the person who sent the >>> message, copy and paste their email address and forward the email >>> reply. 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Additional participation and subscription information can be >>> found at https://www.educause.edu/community >>> <https://nam06.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.educause.edu%2Fcommunity&data=02%7C01%7Ctim.cappalli%40MICROSOFT.COM%7C93dbd1aacb044bf22b1f08d860eacbbc%7C72f988bf86f141af91ab2d7cd011db47%7C1%7C0%7C637365908850269980&sdata=XEKiloDEmyIDC5Yo7pUrX9VyhL3gcs2Fn1w3fL7Nwcs%3D&reserved=0> >>> >>> >> >> ********** >> Replies to EDUCAUSE Community Group emails are sent to the entire >> community list. If you want to reply only to the person who sent the >> message, copy and paste their email address and forward the email >> reply. 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