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Cisco Bug: CSCvs36904 - network scan tool can discover L2 connected clients with P2P blocking action enabled

Last Modified

Jan 17, 2020

Products (1)

  • Cisco Catalyst 9800 Series Wireless Controllers

Known Affected Releases

16.12.1 16.12.1s

Description (partial)

Symptom:
Have any network scanner tool (ex: fing app for android) on a wireless client which is associated to any WLAN on the WLC 9800.
By running the fing app we can get the list of all connected clients (ip,mac,device type) on the 9800.
Configure p2p blocking action drop on the WLAN,  fing app cannot ping the list of connected clients, but we still get the complete list of connected clients on the wlan.

Conditions:
Aps in local mode connected to 9800 WLC.
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