Hi William.

“Most need no instructions and figure it out on their own,” may not be the 
virtue you think it is.  How many of these users figuring it out on their own 
are validating your RADIUS server certs?  Self-configuration invites MiM 
attacks that can harvest account credentials.  It’s precisely the security 
weakness of 1x I cautioned about earlier.

Furthermore, providing an onboarding option that configures the devices 
correctly doesn’t prevent users from self-configuring.  A good on-boarding 
solution will be widely used and will reduce the overall risk, but it doesn’t 
eliminate the problem.  TLS is the only EAP type that doesn’t have this 
weakness.

Chuck

From: The EDUCAUSE Wireless Issues Community Group Listserv 
<[email protected]> On Behalf Of Green, William C
Sent: Thursday, September 12, 2019 7:27 PM
To: [email protected]
Subject: Re: [WIRELESS-LAN] Feasibility of an open SSID for student use

We’ve found its easier for our community to onboard to our 802.1x SSID with the 
native supplicant of the device, rather than download and run an installer (are 
dropping the installer).  Most need no instructions and figure it out on their 
own.

While we offer an iPSK SSID, it is not as easy— person must go to web site to 
enroll a MAC address and get a key.  Predominantly in the residence halls so 
far (TVs, speakers, printers, game consoles, etc).  Also a smattering of 
devices that don’t support 802.1x (making our researchers happy).  I’m waiting 
to hear how iPSK has improved battery life for IOT projects.


William Green, Director of Networking and Telecommunications
The University of Texas at Austin | ITS | 512-475-9295 | 
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