Yup.. we had to disable the “Arp Spoof” settings in the IDS profiles.  We have 
other irons in the fire so we are not able to do much to investigate this issue 
at this time.

M

From: The EDUCAUSE Wireless Issues Community Group Listserv 
<[email protected]> on behalf of "McClintic, Thomas" 
<[email protected]>
Reply-To: The EDUCAUSE Wireless Issues Community Group Listserv 
<[email protected]>
Date: Friday, September 18, 2020 at 11:46 AM
To: "[email protected]" <[email protected]>
Subject: [WIRELESS-LAN] iOS 14 Causing ARP Spoofing Events on Aruba Controllers

We have begun seeing an impact with iOS 14 on our various SSIDs with ARP 
Spoofing events. We had not seen an event this year until July 9th (the date 
beta was released). There has been a large increase since the 16th of the 
events.

The events seem to occur randomly as we are starting to troubleshoot. They 
still occur even when clients disable the privacy setting for the network.

Since our blacklist interval is set to 30 minutes this is causing an 
interruption of service when it occurs.

Has anyone else seen similar events? I have opened a TAC case to assist.

Thanks

TJ McClintic


UTHealth | The University of Texas Health Science Center at Houston
Houston’s Health University

Communications Technology | Network Operations
7000 Fannin | Suite M60 | Houston, TX  77030
713.486.9269 netops | 713.486.2271 office


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