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ISE 1.2 anomalous client suppression

Answered Question
Nov 11th, 2013
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Is there a way to clear a client who has been flagged as an anomalous client ? We are hesitent to modify or change any of the settings without fully understanding the potential impact, but would like to know if there is a way to manually reset a client so that they may retry authentication.

Correct Answer by Ravi Singh about 3 years 9 months ago

Global Suppression Settings are at: Administration > System > Settings > Protocols > RADIUS

Also if you have very high auth rates, its recommended NOT to disable suppression



Another approach is to use selective suppression and allow the devices in test.

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jjohnston1127 Mon, 11/11/2013 - 14:18
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I cannot answer your question about manually resetting the client, but I had run into this issue quite a bit without knowing about the feature in 1.2.  Once aware of the feature, I successfully disabled it altogether without impacting any production.  You can shorten the timer from 60 minutes but I believe the lowest you can go is 30 minutes.


Before I disabled rejecting a client for 60 minutes, I tried deleting the MAC from the endpoint database and other things but nothing seemed to work.

Mike Campbell Tue, 11/12/2013 - 05:57
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Yeah, I tried the same thing, deleting the endpoint, argh....there's got to be a way to reset the client in ISE

aqjaved Tue, 11/12/2013 - 08:04
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Cisco  ISE allows you to view, create, modify, duplicate, delete, change the  status, import, export, or search for attributes of Cisco ISE users. If  you are using a Cisco ISE internal database, you must create an account  for any new user who needs access to resources or services on a Cisco  ISE network.

Note:

If using "disable account" we strongly recommend using "reminder" functionality to avoid users getting locked from Administration > Identity Management > Identities > Users.


Please check the below guide:

http://www.cisco.com/en/US/docs/security/ise/1.2/user_guide/ise_man_id_stores.html#wp1394319

jjohnston1127 Tue, 11/12/2013 - 08:19
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Hi Ageel,


Thanks for the response.  The problem we are having is not related to a user, though.  With the anomalous client supression enabled for the RADIUS protocol (Admin->System->Settings->Protocols->RADIUS) set to reject users who fail subsequent authorizations, the client is in "reject" mode for the determined amount of time configured which is a default of 60 minutes.


The problem we are facing is once the client is in reject mode we are unable to find a way to clear them from reject mode.  If I were to look at a client on my ISE deployment who is experiencing this I would see an attribute for IsEndPointInRejectMode set to true. 


Deleting the endpoint MAC address from the ISE database does not fix the issue - so it seems to cache it somewhere.  We want to find a way to clear it.


Thanks.

Correct Answer
Ravi Singh Tue, 11/12/2013 - 11:11
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Global Suppression Settings are at: Administration > System > Settings > Protocols > RADIUS

Also if you have very high auth rates, its recommended NOT to disable suppression



Another approach is to use selective suppression and allow the devices in test.

Mike Campbell Thu, 11/14/2013 - 08:26
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Working with our pre-sales engineer at Cisco, he guided me to the Logging Collection Filters to do exactly what Ravi suggested in the last entry in his post above mine, this works. It seems like an odd place to look when you are trying to clear a client in this state, but hey, as long as it works I'm happy.


If I had a feature request, there should be a radio button to allow an administrator to simply click to reset or clear the station to allow them to re-authenticate.

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