<div dir="ltr">Based on what the AD gurus told me, it's the way Cisco authenticates from CUCM/CUC, so it would have to be a Cisco change.<div><br></div><div>Anyone in the know at Cisco that can let us know for sure?</div><div><br></div><div>Thanks!</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Aug 8, 2017 at 11:08 AM, Lelio Fulgenzi <span dir="ltr"><<a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">That’s a very interesting scenario. I’ve always wondered about that. I wonder if there’s a way that AD admins can track authentications from CUCM cluster and
apply the lock out rules accordingly? <u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">---<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Lelio Fulgenzi, B.A.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Senior Analyst, Network Infrastructure<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Computing and Communications Services (CCS)<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">University of Guelph<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="tel:(519)%20824-4120" value="+15198244120" target="_blank">519-824-4120 Ext 56354</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="mailto:lelio@uoguelph.ca" target="_blank">lelio@uoguelph.ca</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><a href="http://www.uoguelph.ca/ccs" target="_blank">www.uoguelph.ca/ccs</a><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Room 037, Animal Science and Nutrition Building<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Guelph, Ontario, N1G 2W1<u></u><u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> cisco-voip [mailto:<a href="mailto:cisco-voip-bounces@puck.nether.net" target="_blank">cisco-voip-bounces@<wbr>puck.nether.net</a>]
<b>On Behalf Of </b>Charles Goldsmith<br>
<b>Sent:</b> Tuesday, August 08, 2017 11:55 AM<br>
<b>To:</b> voip puck<br>
<b>Subject:</b> [cisco-voip] authentication failed alerts<u></u><u></u></span></p><div><div class="h5">
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<p class="MsoNormal">So, a question out to the community about how you deal with this issue. If an organization is using Webex Messenger for IM and end-users are connecting Jabber to it, along with phone services and voicemail locally, jabber is setup with
accounts to authenticate to AD locally. SSO is not in the mix.<u></u><u></u></p>
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<p class="MsoNormal">When a user's AD password comes up on their expiration and it's changed, they usually forget to update jabber on their laptop, phone and tablets, generating a lot of authentication alerts. Those can be filtered down by adjusting the thresholds.<u></u><u></u></p>
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<p class="MsoNormal">I'm not an AD guy, but talking with some, when asking about why this activity is not locking out the AD accounts, I was told that CUCM/CUC uses a read-only connection to AD, so it will not lock out the accounts.<u></u><u></u></p>
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<p class="MsoNormal">Because of that problem, we can't simply disable the alerts, we need to monitor them in case of brute force via MRA.<u></u><u></u></p>
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<p class="MsoNormal">Any thoughts on a better way to handle this specific scenario? <u></u><u></u></p>
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<p class="MsoNormal">I may wind up writing a script to consolidate the email authentication reports into something to give a report on thresholds per user, like John.Doe had 30 authenticaiton attempts in the last hour, Jane.Smith had 15, and Mark.Jones had
650.<u></u><u></u></p>
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<p class="MsoNormal">Thanks!<u></u><u></u></p>
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