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Find a host that keeps failing authentication

I have a WLC 2504 that is using RADIUS authentication for two of our three SSIDs.  In my logs, I keep getting two hosts that are attemtpting to authenticate over and over, with obviously incorrect usernames for our environment.  I have the suspicion that these constant authentication requests are causing issues with our Windows servers that actually handle authentication, so I'm wondering is there a way to find the MAC addresses for the offending machines and ban them from the wireless network so they stop spamming my RADIUS server   I mean they're not getting access through our network anyway so I don't have a problem kicking them entirely.

All I have in the log is this:

0Fri Aug  9 13:38:12 2013AAA Authentication Failure for UserName:1310260130521226@wlan.mnc260.mcc310.3gppnetwork.org  User Type: WLAN USER
1Fri Aug  9 13:38:07 2013AAA Authentication Failure for UserName:1310260130521226@wlan.mnc260.mcc310.3gppnetwork.org  User Type: WLAN USER
2Fri Aug  9 13:37:42 2013AAA Authentication Failure for UserName:1310260130521226@wlan.mnc260.mcc310.3gppnetwork.org  User Type: WLAN USER
3Fri Aug  9 13:37:37 2013AAA Authentication Failure for UserName:1310260130521226@wlan.mnc260.mcc310.3gppnetwork.org  User Type: WLAN USER
4Fri Aug  9 13:37:31 2013AAA Authentication Failure for UserName:1310260130521226@wlan.mnc260.mcc310.3gppnetwork.org  User Type: WLAN USER
  • Other Wireless - Mobility Subjects
Everyone's tags (4)
3 REPLIES
Hall of Fame Super Silver

Re: Find a host that keeps failing authentication

Enable client exclusion and that will block them after 3 failures.

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Thanks, Scott *****Help out other by using the rating system and marking answered questions as "Answered"*****
Hall of Fame Super Silver

Re: Find a host that keeps failing authentication

Also make sure any WLAN that isn't using radius has the checkbox for radius server unchecked.

Sent from Cisco Technical Support iPhone App

Thanks, Scott *****Help out other by using the rating system and marking answered questions as "Answered"*****
New Member

This may have something to do

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